Dayanne Abreu, M. S. Viana, P. V. Oliveira, Gustavo Fernandes Viana, D. M. B. Nojosa
Fossil amniotic eggs have great informative potential, especially regarding reproductive and evolutionary aspects of vertebrates. However, there are only few intact specimens or with fossilized embryos within, and the rare reported cases are mostly related to dinosaurs. In Brazil, the records of these ichnofossils are practically restricted to the Bauru Basin. This research aims to describe the first amniotic egg found in carbonate concretions in the Romualdo Formation, adding information to the study of these fossils and to the paleontological context of the basin. The specimen was collected at the Sitio Pe da Serra do Felix, in the Municipality of Simoes, Piaui State, Brazil. The methodology employed was based on Scanning Electron Microscopy, Energy Dispersive Spectroscopy and Optical Microscopy techniques, as well as computed tomography analyses. The morphological and microstructural characteristics of the shell suggests the identification of the fossil as a crocodylomorph egg. This specimen differs from other fossil eggs assigned to the aforementioned group by its small size and considerably thick shell. The tomographic sections revealed possible basic structures of an embryo inside the egg, suggesting that this is the first fossilized egg with a crocodylomorph embryonic trace found in the world. Keywords: ichnofossil, amniotic egg, embryo, Crocodylomorpha, Aptian, Romualdo Formation. Ovos amnioticos fosseis possuem um grande potencial informativo, especialmente em relacao aos aspectos reprodutivos e evolutivos dos vertebrados. Contudo, existem poucos exemplares intactos ou dotados de vestigios embrionarios em seu interior e os raros casos registrados sao em sua maioria relacionados a dinossauros. No Brasil, os registros desses icnofosseis estao praticamente restritos a Bacia Bauru. O presente trabalho objetiva descrever a primeira ocorrencia de um ovo amniotico encontrado em concrecoes carbonaticas da Formacao Romualdo, acrescentando informacoes ao estudo desses fosseis e ao contexto paleontologico da bacia. O especime foi coletado no Sitio Pe da Serra do Felix, no Municipio de Simoes, Piaui, Brasil. A metodologia empregada baseou-se nas tecnicas de Microscopia Eletronica de Varredura, Espectroscopia por Energia Dispersiva e Microscopia Optica, bem como analises de tomografia computadorizada. As caracteristicas morfologicas e microestruturais da casca sugerem que o fossil se trata de um ovo de crocodilomorfa. O especime analisado difere de outros ovos fosseis atribuidos ao referido grupo taxonomico pelo tamanho reduzido e casca consideravelmente espessa. As secoes tomograficas revelaram possiveis estruturas basicas de um embriao no interior do material, sugerindo que se trata do primeiro ovo fossilizado de crocodilomorfa com restos embrionarios do mundo. Palavras-chave: icnofossil, ovo amniotico, embriao, Crocodylomorpha, Aptiano, Formacao Romualdo.
化石羊卵具有巨大的信息潜力，特别是关于生殖和进化方面的脊椎动物。然而，只有少数完整的标本或胚胎化石，而罕见的报告病例大多与恐龙有关。在巴西，这些鱼化石的记录实际上仅限于保鲁盆地。本研究旨在描述在Romualdo组碳酸盐结块中发现的第一个羊膜卵，为这些化石的研究和盆地的古生物背景增加信息。该标本采集于巴西皮奥伊州西莫埃斯市费利克斯山。所采用的方法是基于扫描电子显微镜，能量色散光谱和光学显微镜技术，以及计算机断层扫描分析。壳的形态和微观结构特征表明该化石为鳄鱼卵。这个标本不同于其他化石蛋分配给上述组，它的小尺寸和相当厚的壳。断层扫描切片揭示了卵内胚胎可能的基本结构，这表明这是世界上发现的第一个带有鳄鱼形胚胎痕迹的化石卵。关键词:鱼化石，羊卵，胚胎，鳄鱼，Aptian, Romualdo Formation羊膜化石具有巨大的潜在信息价值，特别是在与进化的脊椎动物生殖方面的相关信息方面。因此，现存的生物样本是完整的，它们的进化过程和胚胎发育过程似乎是内在的，它们的进化过程似乎是恐龙的主要近亲。在巴西，没有一个登记机构对巴西的疾病进行了诊断，并对巴西的疾病进行了限制。因此，本文提出了一种新的研究目标，即在古生物学背景下的古生物学背景下，在古生物学背景下的古生物学背景下，在古生物学背景下的古生物学背景下，在古生物学背景下的古生物学背景下，在古生物学背景下的古生物学背景下，在古生物学背景下的古生物学背景下，在古生物学背景下的古生物学背景下，在古生物学背景下的古生物学背景下，在古生物学背景下的古生物学背景。O especifoi coletado no Sitio Pe da Serra do Felix, no Municipio de Simoes, Piaui, brazil。光学显微镜，光谱学，能量色散光学显微镜，计算机层析分析。由于具有独特的形态和微结构特征，因此，该研究表明，鳄鱼的化石结构具有独特的特征。特别分析了不同种类的化石、类群、类群分类、类群分类、类群分类、类群分类、类群分类、类群分类、类群分类等问题。由于断层扫描揭示了胚胎的基本结构，而不是内部材料，因此，鳄鱼化石的原始结构可以恢复胚胎。有:化石，羊膜，胚胎，鳄鱼，Aptiano, Formacao Romualdo。
{"title":"First record of an amniotic egg from the Romualdo Formation (Lower Cretaceous, Araripe Basin, Brazil)","authors":"Dayanne Abreu, M. S. Viana, P. V. Oliveira, Gustavo Fernandes Viana, D. M. B. Nojosa","doi":"10.4072/rbp.2020.3.03","DOIUrl":"https://doi.org/10.4072/rbp.2020.3.03","url":null,"abstract":"Fossil amniotic eggs have great informative potential, especially regarding reproductive and evolutionary aspects of vertebrates. However, there are only few intact specimens or with fossilized embryos within, and the rare reported cases are mostly related to dinosaurs. In Brazil, the records of these ichnofossils are practically restricted to the Bauru Basin. This research aims to describe the first amniotic egg found in carbonate concretions in the Romualdo Formation, adding information to the study of these fossils and to the paleontological context of the basin. The specimen was collected at the Sitio Pe da Serra do Felix, in the Municipality of Simoes, Piaui State, Brazil. The methodology employed was based on Scanning Electron Microscopy, Energy Dispersive Spectroscopy and Optical Microscopy techniques, as well as computed tomography analyses. The morphological and microstructural characteristics of the shell suggests the identification of the fossil as a crocodylomorph egg. This specimen differs from other fossil eggs assigned to the aforementioned group by its small size and considerably thick shell. The tomographic sections revealed possible basic structures of an embryo inside the egg, suggesting that this is the first fossilized egg with a crocodylomorph embryonic trace found in the world. \u0000Keywords: ichnofossil, amniotic egg, embryo, Crocodylomorpha, Aptian, Romualdo Formation.\u0000Ovos amnioticos fosseis possuem um grande potencial informativo, especialmente em relacao aos aspectos reprodutivos e evolutivos dos vertebrados. Contudo, existem poucos exemplares intactos ou dotados de vestigios embrionarios em seu interior e os raros casos registrados sao em sua maioria relacionados a dinossauros. No Brasil, os registros desses icnofosseis estao praticamente restritos a Bacia Bauru. O presente trabalho objetiva descrever a primeira ocorrencia de um ovo amniotico encontrado em concrecoes carbonaticas da Formacao Romualdo, acrescentando informacoes ao estudo desses fosseis e ao contexto paleontologico da bacia. O especime foi coletado no Sitio Pe da Serra do Felix, no Municipio de Simoes, Piaui, Brasil. A metodologia empregada baseou-se nas tecnicas de Microscopia Eletronica de Varredura, Espectroscopia por Energia Dispersiva e Microscopia Optica, bem como analises de tomografia computadorizada. As caracteristicas morfologicas e microestruturais da casca sugerem que o fossil se trata de um ovo de crocodilomorfa. O especime analisado difere de outros ovos fosseis atribuidos ao referido grupo taxonomico pelo tamanho reduzido e casca consideravelmente espessa. As secoes tomograficas revelaram possiveis estruturas basicas de um embriao no interior do material, sugerindo que se trata do primeiro ovo fossilizado de crocodilomorfa com restos embrionarios do mundo.\u0000Palavras-chave: icnofossil, ovo amniotico, embriao, Crocodylomorpha, Aptiano, Formacao Romualdo.","PeriodicalId":49616,"journal":{"name":"Revista Brasileira De Paleontologia","volume":"23 1","pages":"185-193"},"PeriodicalIF":0.7,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48453374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Holocene diatoms of the Colorado River Delta, Argentina. A paleoenvironmental approach from the study of “small fragilarioids”. Diatom assemblages of a sedimentary succession in the deltaic plain of the Colorado River (Argentina) were studied in order to reconstruct the paleoenvironmental conditions of the delta in response to Holocene sea-level changes. A 191 cm depth core was extracted by vibracoring from Las Isletas (LI), located 22 km from the coast (39°43’5.7”S, 62°20’49.7”W). A cluster analysis – CONISS of 35 subsamples defined three diatom zones (DZ). The sedimentary succession is dominated by small fragilarioids, being Punctastriata glubokoensis Williams, Chudaev & Gololobova the most abundant species; the accompanying flora included fresh-brackish and allochthonousmarine-coastal taxa. At the base, subzone DZIA (191–163 cm, 7,315±64 14C yr BP) included sandy lithological units and presented abundant marine-coastal species. The overlying subzone DZIB (163–96 cm) has low abundance of allochthonous marine species. The uppermost zone, DZII (96 cm from the top) integrate the silt-sandy lithological units, and it was deposited ca. 2,218±29 14C yr BP. DZII lacked marine species. The LI sequence represents the infilling of a river-estuarine channel with tidal influence ca. 7,300 14C yr BP that gradually evolved into a fresh-brackish river channel, similar to the current river, ca. 2,200 14C yr BP. During the Middle Holocene transgression, the greatest marine influence would have transported coastal marine species upstream to the LI site; the increase of fluvial influence associated with the progradation of the delta lobe would have favored the ubiquity and persistence of the small fragilarioids in the fluvial-delta assemblages of the Colorado River during the last ca. 7,000 14C yr BP. Keywords: Fragilariaceae, delta, sea level, Holocene, Patagonia. As associacoes de diatomaceas, de uma sucessao sedimentar da planicie deltaica do Rio Colorado (Argentina), foram estudadas com o objetivo de reconstruir as condicoes paleoambientais do delta, em resposta as flutuacoes do nivel do mar no Holoceno. Um testemunho de 191 cm de profundidade foi extraido usando um vibracoring no sitio Las Isletas (LI), localizado a 22 km da costa atual (39°43’5,7”S, 62°20’49,7”O). A analise diatomologica de 35 sub-amostras permitiu definir tres zonas de diatomaceas (DZ) por meio de uma analise de agrupamento – CONISS. O testemunho foi dominado por pequenos fragilarioides, sendo Punctastriata glubokoensis Williams, Chudaev & Gololobova a especie mais abundante. A flora acompanhante apresentou especies de agua salobra-duciaquicolas e taxons marinho-costeiros aloctones. A subzona basal DZIA (191–163 cm, 7.315 ± 64 anos 14C AP) incluiu unidades litologicas arenosas e apresentou abundantes diatomaceas marinhas costeiras aloctone. A subzona sobrejacente (DZIB: 163–96 cm) exibiu poucos taxons marinhos. A zona DZII (96 cm no topo) integrou unidades litologicas de areia-siltosa, for
阿根廷科罗拉多河三角洲的全新世硅藻。研究“小类化石”的古环境方法。研究了科罗拉多河三角洲平原（阿根廷）沉积序列的硅藻组合，以重建三角洲对全新世海平面变化的古环境条件。从距离海岸22公里（39°43'5.7“S，62°20'49.7”W）的Las Isletas（LI）通过振动取芯提取了191 cm深的岩芯。沉积序列以小型碎屑岩为主，其中Puntastriata glubokoensis Williams、Chudaev和Gololobova是最丰富的物种；伴随的植物群包括新鲜的半咸水和异地滨海分类群。在底部，DZIA亚带（191–163 cm，7315±64 14C yr BP）包括砂质岩性单元，并呈现丰富的海洋海岸物种。上覆DZIB亚带（163–96 cm）的外来海洋物种丰度较低。上部区域DZII（距顶部96 cm）整合了粉砂质岩性单元，沉积时间约为2218±29 14C yr BP。ZII缺乏海洋物种。LI序列代表具有潮汐影响的河口河道的填充。7300 14C yr BP，逐渐演变为新鲜的半咸水河道，类似于当前河流，约2200 14C yrBP。在全新世中期海侵期间，最大的海洋影响将把沿海海洋物种向上游输送到LI遗址；与三角洲叶的进展相关的河流影响的增加将有利于在上一个ca期间科罗拉多河的河流三角洲组合中小型脆弱类的普遍存在和持久存在。7000 14C yr BP。关键词：脆弱科，三角洲，海平面，全新世，巴塔哥尼亚。研究了科罗拉多河（阿根廷）三角洲平原的沉积序列，以重建三角洲的古环境条件，以应对全新世海平面的波动。在距离当前海岸22公里（39°43'5.7“S，62°20'49.7”W）的Las Isletas（LI）现场，使用振动取芯提取了191厘米深的珠子。通过聚类分析（CONISS），对35个子样本进行了硅藻学分析，从而确定了三个硅藻带（DZ）。证词主要由小型的类香生物组成，其中最丰富的物种是Puntastriata glubokoensis Williams、Chudaev和Gololobova。伴随的植物区系呈现了苦咸水杜科水生物种和海洋海岸分类单元的异源岩。基底亚带DZIA（191–163 cm，7315±64年14C AP）包含砂质岩性单元，并呈现丰富的沿海海洋硅藻异地质。重叠亚区（DZIB:163-96厘米）几乎没有海洋分类单元。DZII带（顶部96 cm）整合了粉砂质岩性单元，形成了约2218±29年的14C AP。DZII，不存在沿海海洋物种。LI序列代表了受海洋影响的河口河道的淤积。7300年14C AP，逐渐演变为微咸淡水的河道，类似于现在的河流。2200年14C。在中全新世海侵期间，海洋影响的增加将使沿海海洋物种向LI上游迁移。与三角洲叶进展相关的河流影响的增加将有利于在过去约7000年期间，科罗拉多河河流-三角洲组合中小型香贝母的普遍存在和持续存在。14C AP。关键词：香贝母科，三角洲，海平面，全新世，巴塔哥尼亚。
{"title":"Diatomeas holocenas del delta del río Colorado, Argentina. Una aproximación paleoambiental a partir del estudio de “fragilarioides pequeñas”","authors":"Rocío Fayó, Marcela A. Espinosa, F. Isla","doi":"10.4072/rbp.2020.3.05","DOIUrl":"https://doi.org/10.4072/rbp.2020.3.05","url":null,"abstract":"Holocene diatoms of the Colorado River Delta, Argentina. A paleoenvironmental approach from the study of “small fragilarioids”. Diatom assemblages of a sedimentary succession in the deltaic plain of the Colorado River (Argentina) were studied in order to reconstruct the paleoenvironmental conditions of the delta in response to Holocene sea-level changes. A 191 cm depth core was extracted by vibracoring from Las Isletas (LI), located 22 km from the coast (39°43’5.7”S, 62°20’49.7”W). A cluster analysis – CONISS of 35 subsamples defined three diatom zones (DZ). The sedimentary succession is dominated by small fragilarioids, being Punctastriata glubokoensis Williams, Chudaev & Gololobova the most abundant species; the accompanying flora included fresh-brackish and allochthonousmarine-coastal taxa. At the base, subzone DZIA (191–163 cm, 7,315±64 14C yr BP) included sandy lithological units and presented abundant marine-coastal species. The overlying subzone DZIB (163–96 cm) has low abundance of allochthonous marine species. The uppermost zone, DZII (96 cm from the top) integrate the silt-sandy lithological units, and it was deposited ca. 2,218±29 14C yr BP. DZII lacked marine species. The LI sequence represents the infilling of a river-estuarine channel with tidal influence ca. 7,300 14C yr BP that gradually evolved into a fresh-brackish river channel, similar to the current river, ca. 2,200 14C yr BP. During the Middle Holocene transgression, the greatest marine influence would have transported coastal marine species upstream to the LI site; the increase of fluvial influence associated with the progradation of the delta lobe would have favored the ubiquity and persistence of the small fragilarioids in the fluvial-delta assemblages of the Colorado River during the last ca. 7,000 14C yr BP.\u0000Keywords: Fragilariaceae, delta, sea level, Holocene, Patagonia.\u0000As associacoes de diatomaceas, de uma sucessao sedimentar da planicie deltaica do Rio Colorado (Argentina), foram estudadas com o objetivo de reconstruir as condicoes paleoambientais do delta, em resposta as flutuacoes do nivel do mar no Holoceno. Um testemunho de 191 cm de profundidade foi extraido usando um vibracoring no sitio Las Isletas (LI), localizado a 22 km da costa atual (39°43’5,7”S, 62°20’49,7”O). A analise diatomologica de 35 sub-amostras permitiu definir tres zonas de diatomaceas (DZ) por meio de uma analise de agrupamento – CONISS. O testemunho foi dominado por pequenos fragilarioides, sendo Punctastriata glubokoensis Williams, Chudaev & Gololobova a especie mais abundante. A flora acompanhante apresentou especies de agua salobra-duciaquicolas e taxons marinho-costeiros aloctones. A subzona basal DZIA (191–163 cm, 7.315 ± 64 anos 14C AP) incluiu unidades litologicas arenosas e apresentou abundantes diatomaceas marinhas costeiras aloctone. A subzona sobrejacente (DZIB: 163–96 cm) exibiu poucos taxons marinhos. A zona DZII (96 cm no topo) integrou unidades litologicas de areia-siltosa, for","PeriodicalId":49616,"journal":{"name":"Revista Brasileira De Paleontologia","volume":"23 1","pages":"209-221"},"PeriodicalIF":0.7,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42477100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The first record of the spider family Anyphaenidae for the early Miocene Mexican Chiapas amber, a juvenile from Simojovel de Allende, is described. The specimen is assigned to the subfamily Anyphaeninae, based on the position of the tracheal spiracle. Keywords: Chiapas, Araneae, Anyphaeninae, Miocene, amber. E descrito o primeiro registro da familia Anyphaenidae para âmbar de Chiapas, Mexico, uma aranha juvenil, do Mioceno inferior de Simojovel de Allende. O especime e atribuido a subfamilia Anyphaeninae, com base na posicao da espiraculo traqueal. Palavras-chave: Chiapas, Araneae, Anyphaeninae, Mioceno, âmbar.
本文描述了早中新世墨西哥恰帕斯琥珀(Simojovel de Allende)幼蛛的第一个蜘蛛科记录。根据气管呼吸孔的位置，该标本被分配到甲肝亚科。关键词:恰帕斯，蜘蛛亚目，安菲亚目，中新世，琥珀墨西哥，恰帕斯州，墨西哥，墨西哥，阿连德，墨西哥，墨西哥，阿连德。特别为猪链球菌亚科，以猪链球菌为基础。Palavras-chave: Chiapas, Araneae, Anyphaeninae, Mioceno, mbar。
{"title":"First record of the family Anyphaenidae (Arachnida: Araneae) from the Chiapas amber (Early Miocene, Mexico)","authors":"M. A. García-Villafuerte","doi":"10.4072/rbp.2020.3.01","DOIUrl":"https://doi.org/10.4072/rbp.2020.3.01","url":null,"abstract":"The first record of the spider family Anyphaenidae for the early Miocene Mexican Chiapas amber, a juvenile from Simojovel de Allende, is described. The specimen is assigned to the subfamily Anyphaeninae, based on the position of the tracheal spiracle.\u0000Keywords: Chiapas, Araneae, Anyphaeninae, Miocene, amber.\u0000 \u0000E descrito o primeiro registro da familia Anyphaenidae para âmbar de Chiapas, Mexico, uma aranha juvenil, do Mioceno inferior de Simojovel de Allende. O especime e atribuido a subfamilia Anyphaeninae, com base na posicao da espiraculo traqueal.\u0000Palavras-chave: Chiapas, Araneae, Anyphaeninae, Mioceno, âmbar.","PeriodicalId":49616,"journal":{"name":"Revista Brasileira De Paleontologia","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48969441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fossils of Proboscidea are abundant in Northeastern Brazil. This study presents the identification and description of Proboscidea fossils from eight natural tank deposits in the Bahia state. The specimens were identified based on comparison with available references and by direct analysis of collection specimens. The fossils from the municipalities of Caldeirao Grande, Nordestina, Teofilândia, and Guanambi were identified only at the order level, while the specimens from the municipalities of Santaluz and Joao Dourado were identified as Notiomastodon platensis. Moreover, five age classes were identified: immature, subadult, adult, mature adult, and senile-adult. The majority of the studied individuals are mature adults. The existing records of Proboscidea from Bahia included a total of 32 localities, and the present study increase in 22% these records. Keywords: Notiomastodon platensis, Pleistocene, Quaternary, Megafauna, South America, Northeast Brazil. Fosseis de Proboscidea sao abundantes no nordeste do Brasil. Este estudo apresenta a identificacao e descricao de fosseis de Proboscidea provenientes de oito depositos naturais do tipo tanque do Estado da Bahia. Os especimes foram identificados com base em comparacoes com referencias disponiveis e com analise direta a especimes em colecao. Os fosseis dos municipios de Caldeirao Grande, Nordestina, Teofilândia e Guanambi foram identificados apenas ao nivel de ordem, enquanto os especimes provenientes dos municipios de Santaluz e Joao Dourado foram identificados como Notiomastodon platensis. Alem disso, cinco faixas etarias foram identificadas: imaturo, subadulto, adulto, adulto maduro e adulto senil. A maioria dos individuos sao adultos maduros. Os registros existentes de Proboscidea na Bahia incluem um total de 32 localidades, e o presente estudo aumenta em 22% esse registro. Palavras-chave: Notiomastodon platensis, Pleistoceno, Quaternario, Megafauna, America do Sul, Nordeste do Brasil.
{"title":"The fossil Proboscidea (Mammalia) from Bahia State, Brazil: taxonomy, description, and new locations","authors":"M. Rosa, C. Scherer, L. Avilla","doi":"10.4072/rbp.2020.3.04","DOIUrl":"https://doi.org/10.4072/rbp.2020.3.04","url":null,"abstract":"Fossils of Proboscidea are abundant in Northeastern Brazil. This study presents the identification and description of Proboscidea fossils from eight natural tank deposits in the Bahia state. The specimens were identified based on comparison with available references and by direct analysis of collection specimens. The fossils from the municipalities of Caldeirao Grande, Nordestina, Teofilândia, and Guanambi were identified only at the order level, while the specimens from the municipalities of Santaluz and Joao Dourado were identified as Notiomastodon platensis. Moreover, five age classes were identified: immature, subadult, adult, mature adult, and senile-adult. The majority of the studied individuals are mature adults. The existing records of Proboscidea from Bahia included a total of 32 localities, and the present study increase in 22% these records.\u0000Keywords: Notiomastodon platensis, Pleistocene, Quaternary, Megafauna, South America, Northeast Brazil.\u0000Fosseis de Proboscidea sao abundantes no nordeste do Brasil. Este estudo apresenta a identificacao e descricao de fosseis de Proboscidea provenientes de oito depositos naturais do tipo tanque do Estado da Bahia. Os especimes foram identificados com base em comparacoes com referencias disponiveis e com analise direta a especimes em colecao. Os fosseis dos municipios de Caldeirao Grande, Nordestina, Teofilândia e Guanambi foram identificados apenas ao nivel de ordem, enquanto os especimes provenientes dos municipios de Santaluz e Joao Dourado foram identificados como Notiomastodon platensis. Alem disso, cinco faixas etarias foram identificadas: imaturo, subadulto, adulto, adulto maduro e adulto senil. A maioria dos individuos sao adultos maduros. Os registros existentes de Proboscidea na Bahia incluem um total de 32 localidades, e o presente estudo aumenta em 22% esse registro.\u0000Palavras-chave: Notiomastodon platensis, Pleistoceno, Quaternario, Megafauna, America do Sul, Nordeste do Brasil.","PeriodicalId":49616,"journal":{"name":"Revista Brasileira De Paleontologia","volume":"23 1","pages":"194-208"},"PeriodicalIF":0.7,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45880021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Aportes de la palinología al conocimiento de los embalsados holocenos de Corrientes, Argentina","authors":"Lionel Fernandez Pacella, Mercedes Di Pasquo","doi":"10.4072/rbp.2020.1.04","DOIUrl":"https://doi.org/10.4072/rbp.2020.1.04","url":null,"abstract":"","PeriodicalId":49616,"journal":{"name":"Revista Brasileira De Paleontologia","volume":"23 1","pages":"63-72"},"PeriodicalIF":0.7,"publicationDate":"2020-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48442194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The non-marine ostracod Cypridea Bosquet is surprisingly diverse worldwide, especially in the Cretaceous. Due to their short temporal distribution, many Cypridea species together with other typical Pre-Salt ostracod genera, such as Ilhasina Krommelbein, Paracypridea Swain, Petrobrasia Krommelbein, Reconcavona Krommelbein, and Theriosynoecum Branson, have provided a robust biostratigraphic framework for Brazilian and Western African basins. The Reconcavo-Tucano Basin, located in the Bahia State, was the first Brazilian oil basin. This huge Mesozoic paleolake has over a hundred of ostracod species, most of the genus Cypridea, which allowed the development of a biostratigraphic chart with nine biozones and several subzones. This biostratigraphic framework has been used for correlations with most of the non-marine sections of NE and SE Brazilian basins, including the Sanfranciscana Basin, whose lacustrine outcrops correspond to the Quirico Formation. Nevertheless, in a recent publication on ostracods and the age of the Quirico Formation, Cypridea species were erroneously identified. Consequently, a Valanginian age was wrongly proposed for the base of that formation, and the stratigraphic and geographical distributions of some species were erroneously extended. The present study reveals that none Cypridea species of the Quirico Formation is conspecific with the Reconcavo-Tucano Basin species, including Cypridea hystrix Krommelbein, and, consequently, a Valanginian age is discarded for the base of that formation. Keywords: biostratigraphy, Cretaceous, Minas Gerais State, paleolimnology, Quirico Formation. O ostracode continental Cypridea Bosquet e incrivelmente diverso em todo o mundo, especialmente no Cretaceo. Devido a curta distribuicao temporal, muitas especies de Cypridea, juntamente com outros generos tipicos de ostracodes das secoes do Pre-Sal, como Ilhasina Krommelbein, Paracypridea Swain, Petrobrasia Krommelbein, Reconcavona Krommelbein e Theriosynoecum Branson, permitiram a construcao de um excelente arcabouco bioestratigrafico para bacias brasileiras e do oeste africano. A Bacia do Reconcavo-Tucano, localizada na Bahia, foi a primeira bacia petrolifera brasileira explorada economicamente. Esse enorme paleolago mesozoico possui mais de 100 especies de ostracodes, a maioria do genero Cypridea, que permitiram o desenvolvimento de uma carta bioestratigrafica com nove biozonas e varias subzonas. Este arcabouco bioestratigrafico tem sido usado para correlacoes com a maioria das secoes nao marinhas das bacias brasileiras do NE e SE, incluindo a Bacia Sanfranciscana, cujos afloramentos lacustres correspondem a Formacao Quirico. No entanto, em uma publicacao recente sobre ostracodes e a idade da Formacao Quirico, especies de Cypridea foram identificadas erroneamente. Em consequencia disso, uma idade valanginiana foi proposta equivocadamente para a base dessa formacao, e as distribuicoes estratigraficas e geograficas de algumas especies foram incorret
{"title":"The genus Cypridea (Crustacea, Ostracoda) and the age of the Quiricó Formation, SE Brazil: a critical review","authors":"J. Coimbra","doi":"10.4072/rbp.2020.2.02","DOIUrl":"https://doi.org/10.4072/rbp.2020.2.02","url":null,"abstract":"The non-marine ostracod Cypridea Bosquet is surprisingly diverse worldwide, especially in the Cretaceous. Due to their short temporal distribution, many Cypridea species together with other typical Pre-Salt ostracod genera, such as Ilhasina Krommelbein, Paracypridea Swain, Petrobrasia Krommelbein, Reconcavona Krommelbein, and Theriosynoecum Branson, have provided a robust biostratigraphic framework for Brazilian and Western African basins. The Reconcavo-Tucano Basin, located in the Bahia State, was the first Brazilian oil basin. This huge Mesozoic paleolake has over a hundred of ostracod species, most of the genus Cypridea, which allowed the development of a biostratigraphic chart with nine biozones and several subzones. This biostratigraphic framework has been used for correlations with most of the non-marine sections of NE and SE Brazilian basins, including the Sanfranciscana Basin, whose lacustrine outcrops correspond to the Quirico Formation. Nevertheless, in a recent publication on ostracods and the age of the Quirico Formation, Cypridea species were erroneously identified. Consequently, a Valanginian age was wrongly proposed for the base of that formation, and the stratigraphic and geographical distributions of some species were erroneously extended. The present study reveals that none Cypridea species of the Quirico Formation is conspecific with the Reconcavo-Tucano Basin species, including Cypridea hystrix Krommelbein, and, consequently, a Valanginian age is discarded for the base of that formation.\u0000Keywords: biostratigraphy, Cretaceous, Minas Gerais State, paleolimnology, Quirico Formation.\u0000O ostracode continental Cypridea Bosquet e incrivelmente diverso em todo o mundo, especialmente no Cretaceo. Devido a curta distribuicao temporal, muitas especies de Cypridea, juntamente com outros generos tipicos de ostracodes das secoes do Pre-Sal, como Ilhasina Krommelbein, Paracypridea Swain, Petrobrasia Krommelbein, Reconcavona Krommelbein e Theriosynoecum Branson, permitiram a construcao de um excelente arcabouco bioestratigrafico para bacias brasileiras e do oeste africano. A Bacia do Reconcavo-Tucano, localizada na Bahia, foi a primeira bacia petrolifera brasileira explorada economicamente. Esse enorme paleolago mesozoico possui mais de 100 especies de ostracodes, a maioria do genero Cypridea, que permitiram o desenvolvimento de uma carta bioestratigrafica com nove biozonas e varias subzonas. Este arcabouco bioestratigrafico tem sido usado para correlacoes com a maioria das secoes nao marinhas das bacias brasileiras do NE e SE, incluindo a Bacia Sanfranciscana, cujos afloramentos lacustres correspondem a Formacao Quirico. No entanto, em uma publicacao recente sobre ostracodes e a idade da Formacao Quirico, especies de Cypridea foram identificadas erroneamente. Em consequencia disso, uma idade valanginiana foi proposta equivocadamente para a base dessa formacao, e as distribuicoes estratigraficas e geograficas de algumas especies foram incorret","PeriodicalId":49616,"journal":{"name":"Revista Brasileira De Paleontologia","volume":"23 1","pages":"90-97"},"PeriodicalIF":0.7,"publicationDate":"2020-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48486855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ane E B Pavanatto, Á. A. Da-Rosa, Rodrigo Temp-Müller, Lucio Roberto-Da-Silva, A. M. Ribeiro, A. Martinelli, Sérgio Dias-da-Silva
A new fossiliferous site from the Pinheiros-Chiniqua Sequence (Santa Maria Supersequence) with typical tetrapod components of the Dinodontosaurus Assemblage Zone (AZ) is here described. The new site is included in the Faxinal do Soturno Structural Block. The fossil content is characterized by cranial and postcranial material of rauisuchian archosaurs, traversodontid and chiniquodontid cynodonts and dicynodonts, the first occurrence of a large-sized coelacanth fish in the Brazilian Triassic, as well as ichnological material, represented by coprolites. The presence of Luangwa together with Massetognathus raises interesting questions regarding the age of this site included in the Dinodontosaurus AZ when compared with other localities of Southern Brazil, western Argentina and Africa. As in other localities of this AZ, the fossil specimens recovered in Bortolin site exhibit remarkable differences on their fossil preservation: those from the lower portion of the outcrop (distal floodplain) possess a heterogeneous preservation (variable between poor to fairly good) whereas those from the top levels (proximal floodplain) are comparatively better preserved. This new locality, with a large amount of stratigraphically controlled fossils, constitutes a key-locality to study the distribution of Triassic terrestrial tetrapods and to perform comparisons with other sites of this AZ, inwhich several historical records lack a precise provenance. Keywords: Dinodontosaurus Assemblage Zone, Santa Maria Supersequence, Luangwa, coelacanth. Um novo sitio fossilifero e descrito para a Sequencia Pinheiros-Chiniqua (Supersequencia Santa Maria) com tetrapodes tipicos da Zona de Associacao (ZA) de Dinodontosaurus. Este novo sitio esta incluido no Bloco Estrutural Faxinal do Soturno. O conteudo fossil e caracterizado por materiais cranianos e pos-cranianos de arcossauros rauissuquideos, cinodontes chiniquodontideos e traversodontideos e dicinodontes, a primeira ocorrencia de um peixe celacanto de grande tamanho, alem de materiais icnologicos, representados por coprolitos. A presenca de Luangwa juntamente com Massetognathus levanta interessantes questoes acerca da idade desse sitio, incluido na ZA de Dinodontosaurus, quando comparado com outras localidades do sul do Brasil, oeste da Argentina e Africa. Assim como em outras localidades desta ZA, os especimes fosseis coletados no sitio Bortolin apresentam diferencas notaveis na preservacao dos fosseis: fosseis do nivel inferior do afloramento (planicie de inundacao distal) apresentam preservacao heterogenea (variando entre pobre a razoavelmente bem preservado) enquanto que nos niveis superiores (planicie de inundacao proximal), o registro fossil e comparativamente melhor preservado. Esta nova localidade, com uma grande quantidade de fosseis estratigraficamente controlados, constitui uma localidade chave para o estudo da distribuicao dos tetrapodes terrestres do Triassico e sua comparacao com outros sitios desta ZA, na qual vario
本文描述了来自Pinheiros-Chiniqua序列(Santa Maria Supersequence)的一个新的化石遗址，该化石遗址具有典型的恐龙组合带(AZ)的四足动物成分。新场地包含在Faxinal do Soturno结构块中。化石内容以巴西三叠纪首次发现大型腔棘鱼的raisuchian archaesaurus、transodontid和chiniquodontid cynodonts和dicynodonts的颅骨和颅骨后材料以及以粪化石为代表的技术材料为特征。卢安瓜和Massetognathus的存在引发了一个有趣的问题，即与巴西南部、阿根廷西部和非洲的其他地区相比，这个遗址被包括在AZ的恐龙遗址的年龄。与本区其他地区一样，在Bortolin遗址发现的化石标本在化石保存方面表现出显著差异:露头下部(远漫滩)的化石标本保存不均匀(从差到相当好不等)，而顶部(近漫滩)的化石标本保存相对较好。这一新的地点具有大量的地层控制化石，是研究三叠纪陆生四足动物分布和与该区其他地点进行比较的关键地点，其中一些历史记录缺乏精确的物源。关键词:龙龙组合带，圣玛丽亚超层序，卢安瓜，腔棘鱼在新发现的化石中描述了一段Pinheiros-Chiniqua (Supersequencia Santa Maria)序列。Este novo sitio esta包括没有Bloco结构Faxinal do Soturno。因此，我们用化石来描述穷的材料，穷的材料，穷的材料，穷的材料，穷的材料，穷的材料，穷的材料，穷的材料，穷的材料，穷的材料，穷的材料。在Luangwa juntamente com Massetognathus的一次会议上，研究人员提出了许多关于恐龙化石的问题，包括恐龙化石、巴西化石、阿根廷化石和非洲化石。不同地区的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石、不同位置的化石。Esta nova localidade, com uma grande quantidade de fosseis stratigraficamente controlados，构成了uma localidade have para o estudo da distribuicao do四足动物terres do triassio de terres de ZA，以及相同的各种registeres historicos of uma proviicia precision。palavas -chave: Zona de Associacao de Dinodontosaurus, Supersequencia Santa Maria, Luangwa, celacanto。
{"title":"Bortolin site, a new fossiliferous locality in the Triassic (Ladinian/Carnian) of southern Brazil","authors":"Ane E B Pavanatto, Á. A. Da-Rosa, Rodrigo Temp-Müller, Lucio Roberto-Da-Silva, A. M. Ribeiro, A. Martinelli, Sérgio Dias-da-Silva","doi":"10.4072/rbp.2020.2.04","DOIUrl":"https://doi.org/10.4072/rbp.2020.2.04","url":null,"abstract":"A new fossiliferous site from the Pinheiros-Chiniqua Sequence (Santa Maria Supersequence) with typical tetrapod components of the Dinodontosaurus Assemblage Zone (AZ) is here described. The new site is included in the Faxinal do Soturno Structural Block. The fossil content is characterized by cranial and postcranial material of rauisuchian archosaurs, traversodontid and chiniquodontid cynodonts and dicynodonts, the first occurrence of a large-sized coelacanth fish in the Brazilian Triassic, as well as ichnological material, represented by coprolites. The presence of Luangwa together with Massetognathus raises interesting questions regarding the age of this site included in the Dinodontosaurus AZ when compared with other localities of Southern Brazil, western Argentina and Africa. As in other localities of this AZ, the fossil specimens recovered in Bortolin site exhibit remarkable differences on their fossil preservation: those from the lower portion of the outcrop (distal floodplain) possess a heterogeneous preservation (variable between poor to fairly good) whereas those from the top levels (proximal floodplain) are comparatively better preserved. This new locality, with a large amount of stratigraphically controlled fossils, constitutes a key-locality to study the distribution of Triassic terrestrial tetrapods and to perform comparisons with other sites of this AZ, inwhich several historical records lack a precise provenance.\u0000Keywords: Dinodontosaurus Assemblage Zone, Santa Maria Supersequence, Luangwa, coelacanth.\u0000Um novo sitio fossilifero e descrito para a Sequencia Pinheiros-Chiniqua (Supersequencia Santa Maria) com tetrapodes tipicos da Zona de Associacao (ZA) de Dinodontosaurus. Este novo sitio esta incluido no Bloco Estrutural Faxinal do Soturno. O conteudo fossil e caracterizado por materiais cranianos e pos-cranianos de arcossauros rauissuquideos, cinodontes chiniquodontideos e traversodontideos e dicinodontes, a primeira ocorrencia de um peixe celacanto de grande tamanho, alem de materiais icnologicos, representados por coprolitos. A presenca de Luangwa juntamente com Massetognathus levanta interessantes questoes acerca da idade desse sitio, incluido na ZA de Dinodontosaurus, quando comparado com outras localidades do sul do Brasil, oeste da Argentina e Africa. Assim como em outras localidades desta ZA, os especimes fosseis coletados no sitio Bortolin apresentam diferencas notaveis na preservacao dos fosseis: fosseis do nivel inferior do afloramento (planicie de inundacao distal) apresentam preservacao heterogenea (variando entre pobre a razoavelmente bem preservado) enquanto que nos niveis superiores (planicie de inundacao proximal), o registro fossil e comparativamente melhor preservado. Esta nova localidade, com uma grande quantidade de fosseis estratigraficamente controlados, constitui uma localidade chave para o estudo da distribuicao dos tetrapodes terrestres do Triassico e sua comparacao com outros sitios desta ZA, na qual vario","PeriodicalId":49616,"journal":{"name":"Revista Brasileira De Paleontologia","volume":"23 1","pages":"123-137"},"PeriodicalIF":0.7,"publicationDate":"2020-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44806224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Martín Ghizzoni, A. Corona, M. Ubilla, Daniel Perea
Body mass estimation of Quaternary proterotheriids (Mammalia, Litopterna) and description of a new specimen of Neolicaphrium recens Frenguelli, 1921. A body mass estimation for Quaternary specimens of the family Proterotheriidae was performed using predictive regression equations for extant ungulates. A body mass of 20 –40 kg for Neolicaphrium recens and of <70 kg for Uruguayodon alius are determined based on the analysis of dental, mandibular, and postcranial dimensions including lengths, areas, and volumes. This study incorporates estimates obtained through measurements of elements of the appendicular skeleton, humerus, tibia and astragalus. Limb bones are directly related to body support and locomotion, and therefore their measurements are better estimators of body mass than craniodental dimensions. Additionally, is described and studied a new material of N. recens exhumed from Pleistocene deposits of Colonia Department, southwestern Uruguay. Keywords: body mass, Litopterna, Neolicaphrium recens, Proterotheriidae, Uruguayodon alius. Uma estimativa de massa corporal e feita para especimes quaternarios da familia Proterotheriidae por meio de equacoes de regressao preditiva para ungulados atuais. Com base na analise de dimensoes dentaria, mandibular e pos-craniana, que inclui comprimentos, areas e volumes, foram determinadas massas corporais de 20 a 40 kg para Neolicaphrium recens e <70 kg para Uruguayodon alius. Este estudo incorpora estimativas obtidas atraves de medidas de elementos do esqueleto apendicular, umero, tibia e astragalo. Os ossos dos membros estao diretamente relacionados ao suporte e a locomocao do corpo e, portanto, suas medidas sao melhores estimadores de massa corporal do que as dimensoes crânio-dentarias. Alem disso, um novo material de N. recens proveniente de sedimentos pleistocenicos do Departamento de Colonia, sudoeste do Uruguai, e descrito e estudado. Palavras-chave: Litopterna, masa corporal, Neolicaphrium recens, Proterotheriidae, Uruguayodon alius.
{"title":"Estimación de masa corporal de proterotéridos del Cuaternario (Mammalia, Litopterna) y descripción de un nuevo ejemplar de Neolicaphrium recens Frenguelli, 1921","authors":"Martín Ghizzoni, A. Corona, M. Ubilla, Daniel Perea","doi":"10.4072/rbp.2020.2.06","DOIUrl":"https://doi.org/10.4072/rbp.2020.2.06","url":null,"abstract":"Body mass estimation of Quaternary proterotheriids (Mammalia, Litopterna) and description of a new specimen of Neolicaphrium recens Frenguelli, 1921. A body mass estimation for Quaternary specimens of the family Proterotheriidae was performed using predictive regression equations for extant ungulates. A body mass of 20 –40 kg for Neolicaphrium recens and of <70 kg for Uruguayodon alius are determined based on the analysis of dental, mandibular, and postcranial dimensions including lengths, areas, and volumes. This study incorporates estimates obtained through measurements of elements of the appendicular skeleton, humerus, tibia and astragalus. Limb bones are directly related to body support and locomotion, and therefore their measurements are better estimators of body mass than craniodental dimensions. Additionally, is described and studied a new material of N. recens exhumed from Pleistocene deposits of Colonia Department, southwestern Uruguay.\u0000Keywords: body mass, Litopterna, Neolicaphrium recens, Proterotheriidae, Uruguayodon alius.\u0000Uma estimativa de massa corporal e feita para especimes quaternarios da familia Proterotheriidae por meio de equacoes de regressao preditiva para ungulados atuais. Com base na analise de dimensoes dentaria, mandibular e pos-craniana, que inclui comprimentos, areas e volumes, foram determinadas massas corporais de 20 a 40 kg para Neolicaphrium recens e <70 kg para Uruguayodon alius. Este estudo incorpora estimativas obtidas atraves de medidas de elementos do esqueleto apendicular, umero, tibia e astragalo. Os ossos dos membros estao diretamente relacionados ao suporte e a locomocao do corpo e, portanto, suas medidas sao melhores estimadores de massa corporal do que as dimensoes crânio-dentarias. Alem disso, um novo material de N. recens proveniente de sedimentos pleistocenicos do Departamento de Colonia, sudoeste do Uruguai, e descrito e estudado.\u0000Palavras-chave: Litopterna, masa corporal, Neolicaphrium recens, Proterotheriidae, Uruguayodon alius.","PeriodicalId":49616,"journal":{"name":"Revista Brasileira De Paleontologia","volume":"23 1","pages":"153-162"},"PeriodicalIF":0.7,"publicationDate":"2020-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46988802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Provinciality of Ostracoda (Crustacea) in the Northeastern and Eastern Brazilian shelves based on neontological and paleontological analyses","authors":"C. Machado, J. Coimbra, C. T. Bergue","doi":"10.4072/rbp.2020.1.01","DOIUrl":"https://doi.org/10.4072/rbp.2020.1.01","url":null,"abstract":"","PeriodicalId":49616,"journal":{"name":"Revista Brasileira De Paleontologia","volume":"23 1","pages":"3-31"},"PeriodicalIF":0.7,"publicationDate":"2020-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42594505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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