Pub Date : 2023-08-30DOI: 10.5852/cr-palevol2023v22a27
C. D. Carvalho, A. Bayet‐Goll
Thalassinoides Ehrenberg, 1944 are relatively common bioturbational structures in carbonate shallow marine successions from the early Paleozoic. Much rarer is the reference to this ichnogenus in siliciclastic formations from the same age. In the Ordovician Lashkerak Formation cropping out at the Central Alborz mountains, Iran, Thalassinoides is a common trace fossil in wave-dominated shoreface complex and prodelta-mouth bar environments of a fluvial-dominated delta. We compare the Middle-to-Upper Ordovician branching networks of the Unit 2 of the Lashkerak Formation with the ichnospecies Thalassinoides horizontalis Myrow, 1995 emphasizing the almost entire bedding-parallel orientation, regular branching and lack of constrictions and swellings. The eodiagenetic halos developed from mucus-lining walls, or by change of the original sediment fabric, typical of this and other ichnospecies of Thalassinoides in carbonate settings are not found in sandstones. The almost polygonal mazes from the Lashkerak Formation are also compared with the recently erected Protopaleodictyon aitkeni Morgan, Henderson & Pratt (2019), considered as a giant graphoglyptid in an early evolutionary stage of these forms in shallow marine environments. Both trace fossils are similar in morphology, size, preservation, ichnofacies and interpreted function, thus being P. aitkeni a junior synonym of Thalassinoides horizontalis.
{"title":"Thalassinoides horizontalis Myrow, 1995 from the Middle-Upper Ordovician shallow marine siliciclastics of Iran (Lashkerak Formation)","authors":"C. D. Carvalho, A. Bayet‐Goll","doi":"10.5852/cr-palevol2023v22a27","DOIUrl":"https://doi.org/10.5852/cr-palevol2023v22a27","url":null,"abstract":"Thalassinoides Ehrenberg, 1944 are relatively common bioturbational structures in carbonate shallow marine successions from the early Paleozoic. Much rarer is the reference to this ichnogenus in siliciclastic formations from the same age. In the Ordovician Lashkerak Formation cropping out at the Central Alborz mountains, Iran, Thalassinoides is a common trace fossil in wave-dominated shoreface complex and prodelta-mouth bar environments of a fluvial-dominated delta. We compare the Middle-to-Upper Ordovician branching networks of the Unit 2 of the Lashkerak Formation with the ichnospecies Thalassinoides horizontalis Myrow, 1995 emphasizing the almost entire bedding-parallel orientation, regular branching and lack of constrictions and swellings. The eodiagenetic halos developed from mucus-lining walls, or by change of the original sediment fabric, typical of this and other ichnospecies of Thalassinoides in carbonate settings are not found in sandstones. The almost polygonal mazes from the Lashkerak Formation are also compared with the recently erected Protopaleodictyon aitkeni Morgan, Henderson & Pratt (2019), considered as a giant graphoglyptid in an early evolutionary stage of these forms in shallow marine environments. Both trace fossils are similar in morphology, size, preservation, ichnofacies and interpreted function, thus being P. aitkeni a junior synonym of Thalassinoides horizontalis.","PeriodicalId":51002,"journal":{"name":"Comptes Rendus Palevol","volume":"103 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83908351","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}
Pub Date : 2023-08-18DOI: 10.5852/cr-palevol2023v22a26
R. Dey, D. Basso, A. Chakraborty, L. Roy, A. K. Bhaumik, Amit K. Ghosh
Rhodolith-forming non-geniculate coralline red algae have been recorded from the Long Formation, exposed in four different outcrops at Little Andaman Island (Hut Bay) in the northeastern Indian Ocean. The non-geniculate corallines are represented by species of Sporolithon Heydrich, 1897, Mesophyllum Lemoine, 1928, Lithothamnion Heydrich, 1897, Phymatolithon Foslie, 1898, Lithoporella (Foslie) Foslie, 1909, Spongites Kützing, 1841, Neogoniolithon Setchell & Mason, 1943 and Lithophyllum Philippi, 1837. The algal assemblages also include geniculate corallines belonging to the genera Amphiroa Lamouroux, 1812 and Corallina Linnaeus, 1758. In addition, larger benthic foraminifers and few planktonic foraminifers also have been identified in thin section analysis. Based on the earlier study carried out on planktonic foraminifers, the Long Formation has been dated as Serravallian (late middle Miocene) and chronostratigraphically, the Long Formation has been included in the Ongeian Regional Stage. In the rhodolith-forming non-geniculate corallines, various growth forms and taphonomic features have been recognized. Diagenesis affected the studied material by micritization, cementation and compaction. The four outcrops are dominated by bioclastic wackestone and packstone composed of coralline red algae, benthic and planktonic foraminifers, echinoid spines and unidentified coral fragments. The rhodolith-forming coralline red algae, the growth forms and taphonomic features in non-geniculate corallines and the characteristic benthic foraminifers are indicative of a moderate energy depositional environment. This study indicates that the carbonate production was considerably high during the Serravallian of the tropical northeastern Indian Ocean.
{"title":"Rhodolith-forming coralline red algae in the CaCO3 biofactory — A case study from the Serravallian of tropical northeastern Indian Ocean","authors":"R. Dey, D. Basso, A. Chakraborty, L. Roy, A. K. Bhaumik, Amit K. Ghosh","doi":"10.5852/cr-palevol2023v22a26","DOIUrl":"https://doi.org/10.5852/cr-palevol2023v22a26","url":null,"abstract":"Rhodolith-forming non-geniculate coralline red algae have been recorded from the Long Formation, exposed in four different outcrops at Little Andaman Island (Hut Bay) in the northeastern Indian Ocean. The non-geniculate corallines are represented by species of Sporolithon Heydrich, 1897, Mesophyllum Lemoine, 1928, Lithothamnion Heydrich, 1897, Phymatolithon Foslie, 1898, Lithoporella (Foslie) Foslie, 1909, Spongites Kützing, 1841, Neogoniolithon Setchell & Mason, 1943 and Lithophyllum Philippi, 1837. The algal assemblages also include geniculate corallines belonging to the genera Amphiroa Lamouroux, 1812 and Corallina Linnaeus, 1758. In addition, larger benthic foraminifers and few planktonic foraminifers also have been identified in thin section analysis. Based on the earlier study carried out on planktonic foraminifers, the Long Formation has been dated as Serravallian (late middle Miocene) and chronostratigraphically, the Long Formation has been included in the Ongeian Regional Stage. In the rhodolith-forming non-geniculate corallines, various growth forms and taphonomic features have been recognized. Diagenesis affected the studied material by micritization, cementation and compaction. The four outcrops are dominated by bioclastic wackestone and packstone composed of coralline red algae, benthic and planktonic foraminifers, echinoid spines and unidentified coral fragments. The rhodolith-forming coralline red algae, the growth forms and taphonomic features in non-geniculate corallines and the characteristic benthic foraminifers are indicative of a moderate energy depositional environment. This study indicates that the carbonate production was considerably high during the Serravallian of the tropical northeastern Indian Ocean.","PeriodicalId":51002,"journal":{"name":"Comptes Rendus Palevol","volume":"7 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84413025","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}
Pub Date : 2023-08-11DOI: 10.5852/cr-palevol2023v22a25
O. Touzé
Le Gravettien en Belgique est documenté dans un nombre limité de gisements. Il s’agit en général de gisements de grottes ou d’abris sous roche situés dans le bassin mosan, qui ont souvent fait l’objet de fouilles dès le xixe siècle, notamment les plus importants d’entre eux. La connaissance que nous avons du Gravettien belge doit énormément aux recherches de M. Otte. Dans les années 1970, cet auteur a compilé, synthétisé et structuré une documentation éparse et bien souvent imprécise et, sur cette base, formulé une proposition de séquence régionale. Les connaissances accumulées au cours des dernières décennies permettent d’aborder certains aspects de ce modèle sous un angle différent, tandis que de nouvelles questions sont également apparues. Cet article a ainsi pour objectif de dresser un bilan critique du phasage de la séquence gravettienne belge, à partir des données chronologiques et lithiques de quatre sites majeurs : Maisières-Canal, les grottes et l’Abri supérieur de Goyet, et la Station de l’Hermitage. Au terme de ce bilan, trois entités sont identifiées. Le Maisièrien et le Gravettien ancien correspondent à des traditions lithiques, dont les aires de répartition s’étendent sur une partie de l’Europe nord-occidentale, et qui sont bien documentées en Belgique grâce à deux sites de référence. Un Gravettien « post-phase ancienne » est aussi détecté, mais uniquement dans des ensembles dont l’intégrité pose question, ou qui sont limités quantitativement. Seule la découverte de nouveaux sites, fouillés avec des moyens modernes, permettra d’en acquérir une connaissance plus précise.
比利时的Gravettien在有限数量的矿床中有记录。这些通常是位于莫桑盆地的洞穴或岩石庇护所的矿床，自19世纪以来，这些矿床经常被挖掘，特别是最重要的矿床。我们对比利时Gravettien的了解很大程度上要归功于奥特先生的研究。在20世纪70年代，作者汇编、综合和组织了分散的、往往不精确的文献，并在此基础上提出了区域顺序的建议。近几十年来积累的知识使我们有可能从不同的角度处理这一模式的某些方面，同时也出现了新的问题。因此，本文的目的是对比利时砾石序列的阶段进行批判性的评估，基于四个主要地点的时间和岩石数据:maisieres - canal, grottes et abri superieur de Goyet和hermitage站。在资产负债表结束时，确定了三个实体。maisielan和古老的gravettian与岩石传统相对应，它们的分布区域延伸到西欧的部分地区，并在比利时的两个参考地点有很好的记录。也可以检测到严重的“旧后阶段”，但仅限于完整性有问题或数量有限的集合。只有发现新的遗址，用现代手段挖掘，才能获得更精确的知识。
{"title":"La séquence gravettienne de Belgique : mise à jour et mises au point","authors":"O. Touzé","doi":"10.5852/cr-palevol2023v22a25","DOIUrl":"https://doi.org/10.5852/cr-palevol2023v22a25","url":null,"abstract":"Le Gravettien en Belgique est documenté dans un nombre limité de gisements. Il s’agit en général de gisements de grottes ou d’abris sous roche situés dans le bassin mosan, qui ont souvent fait l’objet de fouilles dès le xixe siècle, notamment les plus importants d’entre eux. La connaissance que nous avons du Gravettien belge doit énormément aux recherches de M. Otte. Dans les années 1970, cet auteur a compilé, synthétisé et structuré une documentation éparse et bien souvent imprécise et, sur cette base, formulé une proposition de séquence régionale. Les connaissances accumulées au cours des dernières décennies permettent d’aborder certains aspects de ce modèle sous un angle différent, tandis que de nouvelles questions sont également apparues. Cet article a ainsi pour objectif de dresser un bilan critique du phasage de la séquence gravettienne belge, à partir des données chronologiques et lithiques de quatre sites majeurs : Maisières-Canal, les grottes et l’Abri supérieur de Goyet, et la Station de l’Hermitage. Au terme de ce bilan, trois entités sont identifiées. Le Maisièrien et le Gravettien ancien correspondent à des traditions lithiques, dont les aires de répartition s’étendent sur une partie de l’Europe nord-occidentale, et qui sont bien documentées en Belgique grâce à deux sites de référence. Un Gravettien « post-phase ancienne » est aussi détecté, mais uniquement dans des ensembles dont l’intégrité pose question, ou qui sont limités quantitativement. Seule la découverte de nouveaux sites, fouillés avec des moyens modernes, permettra d’en acquérir une connaissance plus précise.","PeriodicalId":51002,"journal":{"name":"Comptes Rendus Palevol","volume":"15 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88174165","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}
Pub Date : 2023-07-21DOI: 10.5852/cr-palevol2023v22a24
Morgane Sayah, A. Lenoble, C. Bochaton
Taphonomic analyses are of primary importance to understand the accumulation processes of fossil vertebrate bone assemblages. These approaches are fundamental in archaeological contexts in which the role of humans in the formation of an accumulation must be investigated in detail. However, taphonomic works have so far focused on temperate regions and mammals and few studies extensively deal with other vertebrates, especially the herpetofauna, and tropical areas. This results in an important gap in the scientific literature, which has a strong impact on the paleoecological and zooarchaeological research in the areas where squamates and amphibians are well-represented. In this paper, we present a detailed taphonomic study of a large herpetofaunal assemblage of nearly 11 000 bones collected in the Abri Cadet 3, on Marie Galante Island, and dated from the beginning of the Holocene to the Amerindian period. Obtained results don’t support the role of humans in the constitution of the assemblage despite the occurrence of clear archaeological layers in the site. The most-likely culprit for the creation of the bone assemblage is a small nocturnal raptor (i.e., Athene cunicularia guadeloupensis (Ridgway, 1874) or Tyto insularis (Pelzeln, 1872)). We also conduct a comparison with the other available deposits from Marie Galante, highlighting the diversity of accumulation processes in the different nearby cave sites but also the lack of detailed taphonomic studies which would be needed to explain this diversity.
{"title":"Taphonomic analysis of a Caribbean subfossil herpetofaunal bone assemblage (Marie Galante Island, Lesser Antilles)","authors":"Morgane Sayah, A. Lenoble, C. Bochaton","doi":"10.5852/cr-palevol2023v22a24","DOIUrl":"https://doi.org/10.5852/cr-palevol2023v22a24","url":null,"abstract":"Taphonomic analyses are of primary importance to understand the accumulation processes of fossil vertebrate bone assemblages. These approaches are fundamental in archaeological contexts in which the role of humans in the formation of an accumulation must be investigated in detail. However, taphonomic works have so far focused on temperate regions and mammals and few studies extensively deal with other vertebrates, especially the herpetofauna, and tropical areas. This results in an important gap in the scientific literature, which has a strong impact on the paleoecological and zooarchaeological research in the areas where squamates and amphibians are well-represented. In this paper, we present a detailed taphonomic study of a large herpetofaunal assemblage of nearly 11 000 bones collected in the Abri Cadet 3, on Marie Galante Island, and dated from the beginning of the Holocene to the Amerindian period. Obtained results don’t support the role of humans in the constitution of the assemblage despite the occurrence of clear archaeological layers in the site. The most-likely culprit for the creation of the bone assemblage is a small nocturnal raptor (i.e., Athene cunicularia guadeloupensis (Ridgway, 1874) or Tyto insularis (Pelzeln, 1872)). We also conduct a comparison with the other available deposits from Marie Galante, highlighting the diversity of accumulation processes in the different nearby cave sites but also the lack of detailed taphonomic studies which would be needed to explain this diversity.","PeriodicalId":51002,"journal":{"name":"Comptes Rendus Palevol","volume":"16 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85167818","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}
Pub Date : 2023-07-11DOI: 10.5852/cr-palevol2023v22a23
Fusheng Tian, D. Zheng, A. Nel, Yifei Ye, Ting Mei, Haichun Zhang
The family Campterophlebiidae Handlirsch, 1920 is the dominant Jurassic clade of Odonata Fabricius, 1793, especially hosting a high diversification in northern China. The Chinese campterophlebiid damsel-dragonflies were mainly recovered from the Middle Jurassic of Inner Mongolia, northern China. In the present study, a new campterophlebiid, Parasinitsia qingyunensis n. gen., n. sp., is described from the early Middle Jurassic Yanan Formation of the Ordos Basin, NW China. Parasinitsia n. gen. resembles the genus Sinitsia Pritykina, 2006 recorded from the Upper Jurassic of eastern Transbaikalia, but differs from the latter in having two or three rows of cells between RA and RP1 distal of the pterostigma, IR2 and RP3/4 with at least four rows of cells near the wing margin, and CuAa with about 15 rows of cells between it and the posterior wing margin in the broadest area. The new damsel-dragonfly comes from a new early Middle Jurassic insect site from the Ordos Basin, providing new clues to understand the terrestrial ecosystems during this epoch.
camterophlebiidae handlrsch, 1920是Odonata Fabricius, 1793的主要侏罗纪分支，尤其在中国北方具有高度的多样性。中国拟恋类豆娘蜻蜓主要产于内蒙古中侏罗世。本文报道了鄂尔多斯盆地早中侏罗世延安组中一种新的喜树类——青云寄生(Parasinitsia qingyunensis n. gen.， n. sp.)。外贝加东部上侏罗统Sinitsia n. gen与Sinitsia Pritykina属(2006)相似，但与后者不同的是，在翼柱头远端RA和RP1之间有2 - 3行细胞，IR2和RP3/4在翼缘附近至少有4行细胞，CuAa在最宽的区域与后翼缘之间约有15行细胞。新发现的豆娘蜻蜓来自鄂尔多斯盆地中侏罗世早期的昆虫遗址，为了解这一时期的陆地生态系统提供了新的线索。
{"title":"A new campterophlebiid damsel-dragonfly (Odonata: Isophlebioidea) from the Middle Jurassic Yanan Formation of Yulin City, Shaanxi Province, NW China","authors":"Fusheng Tian, D. Zheng, A. Nel, Yifei Ye, Ting Mei, Haichun Zhang","doi":"10.5852/cr-palevol2023v22a23","DOIUrl":"https://doi.org/10.5852/cr-palevol2023v22a23","url":null,"abstract":"The family Campterophlebiidae Handlirsch, 1920 is the dominant Jurassic clade of Odonata Fabricius, 1793, especially hosting a high diversification in northern China. The Chinese campterophlebiid damsel-dragonflies were mainly recovered from the Middle Jurassic of Inner Mongolia, northern China. In the present study, a new campterophlebiid, Parasinitsia qingyunensis n. gen., n. sp., is described from the early Middle Jurassic Yanan Formation of the Ordos Basin, NW China. Parasinitsia n. gen. resembles the genus Sinitsia Pritykina, 2006 recorded from the Upper Jurassic of eastern Transbaikalia, but differs from the latter in having two or three rows of cells between RA and RP1 distal of the pterostigma, IR2 and RP3/4 with at least four rows of cells near the wing margin, and CuAa with about 15 rows of cells between it and the posterior wing margin in the broadest area. The new damsel-dragonfly comes from a new early Middle Jurassic insect site from the Ordos Basin, providing new clues to understand the terrestrial ecosystems during this epoch.","PeriodicalId":51002,"journal":{"name":"Comptes Rendus Palevol","volume":"20 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73232459","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}
Pub Date : 2023-07-04DOI: 10.5852/cr-palevol2023v22a22
P. Branger
The new genus Micronautilus n. gen. (type species Micronautilus evolutus n. gen., n. sp.) is described and assigned to the family Paracenoceratidae Spath, 1927. Known from only two species with a very small shell, this taxon is regarded to represent a natural lineage within the family. As currently known, the occurrence of Micronautilus n. gen. is limited to the Bathonian of Western France, extending from the Zigzag Zone to the Retrocostatum Zone. The origin of Micronautilus n. gen. is likely to lie in the upper Bajocian group of nautilids assigned to ‘Cenoceras’ fuscum (Crick, 1898). Paleoenvironmental data suggest that the dwarfism of this new taxon cannot be interpreted as a consequence of an isolated population or any specific environmental conditions.
{"title":"Micronautilus n. gen., a new dwarf Bathonian (Middle Jurassic) nautilid from Western France","authors":"P. Branger","doi":"10.5852/cr-palevol2023v22a22","DOIUrl":"https://doi.org/10.5852/cr-palevol2023v22a22","url":null,"abstract":"The new genus Micronautilus n. gen. (type species Micronautilus evolutus n. gen., n. sp.) is described and assigned to the family Paracenoceratidae Spath, 1927. Known from only two species with a very small shell, this taxon is regarded to represent a natural lineage within the family. As currently known, the occurrence of Micronautilus n. gen. is limited to the Bathonian of Western France, extending from the Zigzag Zone to the Retrocostatum Zone. The origin of Micronautilus n. gen. is likely to lie in the upper Bajocian group of nautilids assigned to ‘Cenoceras’ fuscum (Crick, 1898). Paleoenvironmental data suggest that the dwarfism of this new taxon cannot be interpreted as a consequence of an isolated population or any specific environmental conditions.","PeriodicalId":51002,"journal":{"name":"Comptes Rendus Palevol","volume":"61 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74507887","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}
Pub Date : 2023-06-26DOI: 10.5852/cr-palevol2023v22a21
M. Abad, F. Ruiz, M. Arroyo, Gabriel Gómez, A. Muñoz, J. M. Campos, J. Bermejo, Lucía Fernández, Alberto Bermejo, M. L. González-Regalado, J. Tosquella, J. R. Vidal, Fernando Muñiz, M. Pozo, L. Cáceres, P. Gómez, António Toscano, undefined Tatiana IZQUIERDO, Verónica Romero
Portus was the main port of imperial Rome from the 2nd century AD to the 5th century AD, with an inner, hexagonal port (Trajan basin) and an outer port (Claudius basin) linked by a channel bounded by quays. Six sedimentary facies have been differentiated in the geological analysis of a core extracted in this channel, basically composed of poorly classified bioclastic muds typical of restricted environments, accumulations of Posidonia oceanica (Linnaeus) Delile, 1813 and a final anthropic fill. The subfossil record of bivalves, foraminifera and ostracods is characteristic of Mediterranean brackish environments (lagoons, estuaries, deltas) with significant environmental stress, due to changes in the physical-chemical parameters and probably the periodic dredging of this seaway during a period of about 300 years. The presence of “Neptune balls” points to the development of probable stormy periods that deposit these unique structures in the internal areas of this historic port.
{"title":"Late Holocene filling of the Canale di Imbocco (Portus, central Italy): a multidisciplinary palaeoenvironmental perspective","authors":"M. Abad, F. Ruiz, M. Arroyo, Gabriel Gómez, A. Muñoz, J. M. Campos, J. Bermejo, Lucía Fernández, Alberto Bermejo, M. L. González-Regalado, J. Tosquella, J. R. Vidal, Fernando Muñiz, M. Pozo, L. Cáceres, P. Gómez, António Toscano, undefined Tatiana IZQUIERDO, Verónica Romero","doi":"10.5852/cr-palevol2023v22a21","DOIUrl":"https://doi.org/10.5852/cr-palevol2023v22a21","url":null,"abstract":"Portus was the main port of imperial Rome from the 2nd century AD to the 5th century AD, with an inner, hexagonal port (Trajan basin) and an outer port (Claudius basin) linked by a channel bounded by quays. Six sedimentary facies have been differentiated in the geological analysis of a core extracted in this channel, basically composed of poorly classified bioclastic muds typical of restricted environments, accumulations of Posidonia oceanica (Linnaeus) Delile, 1813 and a final anthropic fill. The subfossil record of bivalves, foraminifera and ostracods is characteristic of Mediterranean brackish environments (lagoons, estuaries, deltas) with significant environmental stress, due to changes in the physical-chemical parameters and probably the periodic dredging of this seaway during a period of about 300 years. The presence of “Neptune balls” points to the development of probable stormy periods that deposit these unique structures in the internal areas of this historic port.","PeriodicalId":51002,"journal":{"name":"Comptes Rendus Palevol","volume":"43 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79079209","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}
Pub Date : 2023-06-23DOI: 10.5852/cr-palevol2023v22a20
Jean‐David Moreau, D. Néraudeau
Amber and plant remains were discovered in the lower Cenomanian lignitic clay from La Gripperie-Saint-Symphorien (Charente-Maritime, western France). The amber mainly consists of scarce and infracentimetric pieces showing a wide range of sizes and colours. The shape of the amber grains greatly varies, including more or less cylindrical fragments of flows and spherical drops. Plants consist of foliar remains corresponding to isolated pinnae and pinnules of ferns (Matonia sp., Weichselia reticulata (Stokes & Webb, 1824) Fontaine emend. Alvin, 1971), leafy axes of conifers (Geinitzia reichenbachii (Geinitz, 1842) Hollick & Jeffrey, 1909, Pagiophyllum sp.) and leaves of angiosperms (including cf. Eucalyptolaurus depreii Coiffard, B.Gomez, Thiébaut & J.Kvaček and three morphotypes of undeterminable leaves). They are preserved as isolated cuticles, charcoalified compressions without cuticle, and external casts. Angiosperms are clearly the most abundant and diverse remains of the plant assemblage. This latter contrasts with most of Albian-Cenomanian coastal floras from the Aquitaine Basin, which are dominated by gymnosperms characterised by xeromorphic adaptations and tolerating halophytic conditions. Similar to the coeval sites of Puy-Puy (Charente-Maritime) and Jaunay-Clan (Vienne), the plant-rich clay from La Gripperie-Saint-Symphorien was probably deposited in innermost coastal environments heavily influenced by inland/continental freshwater.
{"title":"Amber and plants from the Upper Cretaceous of La Gripperie-Saint-Symphorien (Charente-Maritime, Western France)","authors":"Jean‐David Moreau, D. Néraudeau","doi":"10.5852/cr-palevol2023v22a20","DOIUrl":"https://doi.org/10.5852/cr-palevol2023v22a20","url":null,"abstract":"Amber and plant remains were discovered in the lower Cenomanian lignitic clay from La Gripperie-Saint-Symphorien (Charente-Maritime, western France). The amber mainly consists of scarce and infracentimetric pieces showing a wide range of sizes and colours. The shape of the amber grains greatly varies, including more or less cylindrical fragments of flows and spherical drops. Plants consist of foliar remains corresponding to isolated pinnae and pinnules of ferns (Matonia sp., Weichselia reticulata (Stokes & Webb, 1824) Fontaine emend. Alvin, 1971), leafy axes of conifers (Geinitzia reichenbachii (Geinitz, 1842) Hollick & Jeffrey, 1909, Pagiophyllum sp.) and leaves of angiosperms (including cf. Eucalyptolaurus depreii Coiffard, B.Gomez, Thiébaut & J.Kvaček and three morphotypes of undeterminable leaves). They are preserved as isolated cuticles, charcoalified compressions without cuticle, and external casts. Angiosperms are clearly the most abundant and diverse remains of the plant assemblage. This latter contrasts with most of Albian-Cenomanian coastal floras from the Aquitaine Basin, which are dominated by gymnosperms characterised by xeromorphic adaptations and tolerating halophytic conditions. Similar to the coeval sites of Puy-Puy (Charente-Maritime) and Jaunay-Clan (Vienne), the plant-rich clay from La Gripperie-Saint-Symphorien was probably deposited in innermost coastal environments heavily influenced by inland/continental freshwater.","PeriodicalId":51002,"journal":{"name":"Comptes Rendus Palevol","volume":"15 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80383248","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}
Pub Date : 2023-06-15DOI: 10.5852/cr-palevol2023v22a19
D. Néraudeau, Baptiste Coutret, Damien Gendry, Bastien Lesage, A. Loi, M. Poujol
Body fossils have been discovered in the Fortunian deposits of the Rozel Cape, in Normandy (NW France). The material consists of about 80 specimens preserved on a shale surface, recently observed at the base of a cliff at the Cap Rozel, in the Cotentin region. The fossils, centimetric in size, have an elliptical outline, with a peripheral bulge, generally without other conspicuous ornamentation, but showing sometimes concentric or radial lines possibly of taphonomic origins. In addition, these body fossils are preserved parallel to the bedding plane, locally rich in horizontal trace fossils (e.g. Archaeonassa Fenton & Fenton, 1937, Helminthoidichnites Fitch, 1850, Helminthopsis Heer, 1877) and also complex treptichinids burrows (e.g. Treptichnus pedum (Seilacher, 1955)) sometimes associated with microbial mats. The sedimentological characteristics of these deposits (ripple marks, syneresis cracks) correspond to a shallow marine shelf environment, with a variable hydrodynamism in the intertidal zone, low for surfaces showing elliptic fossils and syneresis cracks, higher for surfaces with ripple marks. These new discoveries unravel the potential of the Fortunian strata from Normandy and provide new information about the early Cambrian biocenoses.
{"title":"Elliptical body fossils from the Fortunian(Early Cambrian) of Normandy (NW France)","authors":"D. Néraudeau, Baptiste Coutret, Damien Gendry, Bastien Lesage, A. Loi, M. Poujol","doi":"10.5852/cr-palevol2023v22a19","DOIUrl":"https://doi.org/10.5852/cr-palevol2023v22a19","url":null,"abstract":"Body fossils have been discovered in the Fortunian deposits of the Rozel Cape, in Normandy (NW France). The material consists of about 80 specimens preserved on a shale surface, recently observed at the base of a cliff at the Cap Rozel, in the Cotentin region. The fossils, centimetric in size, have an elliptical outline, with a peripheral bulge, generally without other conspicuous ornamentation, but showing sometimes concentric or radial lines possibly of taphonomic origins. In addition, these body fossils are preserved parallel to the bedding plane, locally rich in horizontal trace fossils (e.g. Archaeonassa Fenton & Fenton, 1937, Helminthoidichnites Fitch, 1850, Helminthopsis Heer, 1877) and also complex treptichinids burrows (e.g. Treptichnus pedum (Seilacher, 1955)) sometimes associated with microbial mats. The sedimentological characteristics of these deposits (ripple marks, syneresis cracks) correspond to a shallow marine shelf environment, with a variable hydrodynamism in the intertidal zone, low for surfaces showing elliptic fossils and syneresis cracks, higher for surfaces with ripple marks. These new discoveries unravel the potential of the Fortunian strata from Normandy and provide new information about the early Cambrian biocenoses.","PeriodicalId":51002,"journal":{"name":"Comptes Rendus Palevol","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87857776","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}
Pub Date : 2023-06-08DOI: 10.5852/cr-palevol2023v22a18
Rafael Marquina-Blasco, A. Fagoaga, V. Crespo, A. Martínez-ortí, S. Bailon, Antonio Sánchez-Marco, Daniel Gracia-Monferrer, C. Santisteban, F. Ruiz-Sánchez
The Columbretes Islands (eastern Spain) comprise a volcanic archipelago 50 km off the eastern Spanish coast. Illa Grossa is the main island of the archipelago. After the settlement of humans during the mid-19th century, strong modifications in biodiversity took place, including the reduction of the non-flying vertebrate fauna to a single taxon, Podarcis liolepis atratus (Boscá, 1916). The study of the fossils yielded at the COLT site (dated by AMC between 2780-2724 cal BP and 2600-2492 cal BP) from a loess deposit located at the south of Illa Grossa Island shows that this fauna was more diverse in the past. The assemblage was dominated by squamate reptiles, belonging to two lizards (Chalcides bedriagai (Boscá, 1880) and cf. Podarcis Wagler, 1830) and one snake (Vipera cf. latastei Boscá, 1878). The record in the late Holocene of Columbretes of Vipera cf. latastei settles the existing controversy about the identity of snakes in the archipelago. Regarding Chalcides bedriagai, this is the first record of its presence in the Columbretes Islands. Other faunal elements recovered from the site include at least six species of undetermined birds (passeriforms and procellariforms) and the anthropophilic Mus cf. musculus Linnaeus, 1758. The origin of the squamates taxa from Columbretes palaeontological site (COLT) is still unclear, but was probably related to the Late Pleistocene-Greenlandian (11 700 to 8300 BP, Early Holocene) sea transgression, natural passive colonization, and/or human introduction. We hypothesize implications for the conservation and management of the Natural Reserve.
哥伦布群岛(西班牙东部)是一个火山群岛，距离西班牙东部海岸50公里。格罗萨岛是该群岛的主要岛屿。在19世纪中叶人类定居之后，生物多样性发生了强烈的变化，包括将非飞行脊椎动物动物群减少到单一分类群Podarcis liolepis atratus (bosc， 1916)。对位于Illa Grossa岛南部黄土沉积的COLT遗址(AMC定年在2780 ~ 2724 cal BP ~ 2600 ~ 2492 cal BP之间)化石的研究表明，该地区过去的动物群更为多样化。该组合以鳞片类爬行动物为主，包括2种蜥蜴(Chalcides bedriagai (bosc， 1880)和cf. Podarcis Wagler, 1830)和1种蛇(Vipera cf. latastei bosc， 1878)。全新世晚期蛇属(Columbretes of Vipera cf. latastei)的记录解决了群岛中蛇的身份争议。关于Chalcides bedriagai，这是它在哥伦布群岛存在的第一个记录。从该遗址发现的其他动物群元素包括至少6种尚未确定的鸟类(飞蛾目和荚膜目)和1758年的林奈小家鼠(musculus Linnaeus)。在COLT遗址发现的鳞片类群起源尚不清楚，可能与晚更新世-格陵兰期(11700 ~ 8300 BP，全新世早期)海侵、自然被动殖民和/或人类入侵有关。我们假设对自然保护区的保护和管理的影响。
{"title":"Squamates, rodents, and birds from Holocene deposits of the Illa Grossa Island (Columbretes Islands, Castellón, Spain): an unexpected diverse assemblage","authors":"Rafael Marquina-Blasco, A. Fagoaga, V. Crespo, A. Martínez-ortí, S. Bailon, Antonio Sánchez-Marco, Daniel Gracia-Monferrer, C. Santisteban, F. Ruiz-Sánchez","doi":"10.5852/cr-palevol2023v22a18","DOIUrl":"https://doi.org/10.5852/cr-palevol2023v22a18","url":null,"abstract":"The Columbretes Islands (eastern Spain) comprise a volcanic archipelago 50 km off the eastern Spanish coast. Illa Grossa is the main island of the archipelago. After the settlement of humans during the mid-19th century, strong modifications in biodiversity took place, including the reduction of the non-flying vertebrate fauna to a single taxon, Podarcis liolepis atratus (Boscá, 1916). The study of the fossils yielded at the COLT site (dated by AMC between 2780-2724 cal BP and 2600-2492 cal BP) from a loess deposit located at the south of Illa Grossa Island shows that this fauna was more diverse in the past. The assemblage was dominated by squamate reptiles, belonging to two lizards (Chalcides bedriagai (Boscá, 1880) and cf. Podarcis Wagler, 1830) and one snake (Vipera cf. latastei Boscá, 1878). The record in the late Holocene of Columbretes of Vipera cf. latastei settles the existing controversy about the identity of snakes in the archipelago. Regarding Chalcides bedriagai, this is the first record of its presence in the Columbretes Islands. Other faunal elements recovered from the site include at least six species of undetermined birds (passeriforms and procellariforms) and the anthropophilic Mus cf. musculus Linnaeus, 1758. The origin of the squamates taxa from Columbretes palaeontological site (COLT) is still unclear, but was probably related to the Late Pleistocene-Greenlandian (11 700 to 8300 BP, Early Holocene) sea transgression, natural passive colonization, and/or human introduction. We hypothesize implications for the conservation and management of the Natural Reserve.","PeriodicalId":51002,"journal":{"name":"Comptes Rendus Palevol","volume":"28 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77113713","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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