Pub Date : 2022-04-14DOI: 10.5252/geodiversitas2022v44a15
Kostantis Laskos, D. Kostopoulos
ABSTRACT We herein re-discuss the systematics of the Late Miocene representatives of the most common but poorly documented Eurasian giraffid genus Palaeotragus on the occasion of the review and description of new samples from the Vallesian faunas of Northern Greece. Our results detect five Late Miocene Palaeotragus morphotypes, recognizing at least four species. The so called ‘small-sized palaeotrages’ are represented by the type species P. rouenii and the Chinese P. microdon, whereas the validity of P. pavlowae from Grebeniki (Ukraine) is doubted. ‘Large-sized palaeotrages’ are mainly represented by P. coelophrys (synonym of P. expectans, P. borissiaki, P. hoffstetteri, P. quadricornis, and probably P. moldavicus), a species that thrived in the peri- Black Sea territories during Vallesian and survived during Turolian in the Irano-Anatolian domain, likely by adopting a more robust appearance. Large palaeotrages from the Vallesian faunas of Pentalophos and Ravin de la Pluie (Axios Valley, Greece) are identidied as P. coelophrys with certain confidence. The Vallesian P. berislavicus from Berislav (Ukraine) has intermediate morphometric features between P. rouenii and P. coelophrys and it is, therefore, recognized as a most probably valid species. The latest Vallesian Nikiti-1 (Chalkidiki peninsula) large palaeotrage shares many morphometric features with P. berislavicus, suggesting that the species may have invaded Balkans by the end of Vallesian and possibly survived there until middle Turolian. The Late Miocene Palaeotragus asiaticus from Central Asia is a quite problematic species; it appears closely related to the Turolian equivalent P. cf. coelophrys from China and both may be linked to the older Berislav taxon.
摘要：我们在回顾和描述希腊北部瓦利西亚动物群的新样本时，重新讨论了中新世晚期最常见但文献记载较少的欧亚长颈鹿属古tragus的系统学代表。我们的研究结果发现了五种中新世晚期的古耳虫形态类型，至少识别了四种。所谓的“小型古trages”以模式种P.rouenii和中国P.microdon为代表，而来自Grebeniki（乌克兰）的P.pavlowae的有效性受到怀疑大型古trages主要以P.coelophrys（P.expectans、P.borissiaki、P.hoffstetteri、P.quadornis，可能还有P.moldavicus的同义词）为代表，这是一种在瓦利西亚时期在黑海沿岸地区繁衍生息的物种，在伊拉诺-安纳托利亚地区的图里亚时期幸存下来，可能是因为它的外观更为健壮。Pentalophos和Ravin de la Pluie（希腊Axios Valley）的瓦利西亚动物群的大型古trages被确定为P.coelophrys。来自Berislav（乌克兰）的瓦利西亚P.berislavicus具有介于P.rouenii和P.coelophrys之间的中等形态特征，因此被认为是最有可能有效的物种。最新的瓦利西亚Nikiti-1（Chalkidiki半岛）大型古生物群与贝里斯拉夫菌有许多形态特征，这表明该物种可能在瓦利西亚末期入侵巴尔干半岛，并可能在那里生存到中土罗利亚。来自中亚的中新世晚期亚洲古耳屏是一个相当有问题的物种；它似乎与来自中国的Turolian等同物P.cf.coelophrys密切相关，两者都可能与更古老的Berislav分类单元有关。
{"title":"The Vallesian large Palaeotragus Gaudry, 1861 (Mammalia: Giraffidae) from Northern Greece","authors":"Kostantis Laskos, D. Kostopoulos","doi":"10.5252/geodiversitas2022v44a15","DOIUrl":"https://doi.org/10.5252/geodiversitas2022v44a15","url":null,"abstract":"ABSTRACT We herein re-discuss the systematics of the Late Miocene representatives of the most common but poorly documented Eurasian giraffid genus Palaeotragus on the occasion of the review and description of new samples from the Vallesian faunas of Northern Greece. Our results detect five Late Miocene Palaeotragus morphotypes, recognizing at least four species. The so called ‘small-sized palaeotrages’ are represented by the type species P. rouenii and the Chinese P. microdon, whereas the validity of P. pavlowae from Grebeniki (Ukraine) is doubted. ‘Large-sized palaeotrages’ are mainly represented by P. coelophrys (synonym of P. expectans, P. borissiaki, P. hoffstetteri, P. quadricornis, and probably P. moldavicus), a species that thrived in the peri- Black Sea territories during Vallesian and survived during Turolian in the Irano-Anatolian domain, likely by adopting a more robust appearance. Large palaeotrages from the Vallesian faunas of Pentalophos and Ravin de la Pluie (Axios Valley, Greece) are identidied as P. coelophrys with certain confidence. The Vallesian P. berislavicus from Berislav (Ukraine) has intermediate morphometric features between P. rouenii and P. coelophrys and it is, therefore, recognized as a most probably valid species. The latest Vallesian Nikiti-1 (Chalkidiki peninsula) large palaeotrage shares many morphometric features with P. berislavicus, suggesting that the species may have invaded Balkans by the end of Vallesian and possibly survived there until middle Turolian. The Late Miocene Palaeotragus asiaticus from Central Asia is a quite problematic species; it appears closely related to the Turolian equivalent P. cf. coelophrys from China and both may be linked to the older Berislav taxon.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2022-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48879279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2022-04-08DOI: 10.5252/geodiversitas2022v44a14
Nicholas A. Famoso, J. Orcutt
ABSTRACT The feliform carnivoran Palaeogale von Meyer, 1846 first appears in the Eocene of North America and had a Holarctic distribution in the Oligocene and early Miocene. Despite its large range, Palaeogale has not previously been reported from the Pacific Northwest of North America. We report three new specimens from the John Day Basin of Oregon that fill in this geographic gap. The oldest of these is a largely complete cranium from the Turtle Cove Member of the John Day Formation (Oligocene, 30.0-28.9 Ma). The other two specimens are a left and a right dentary from separate individuals, both recovered from the Kimberly Member (Oligocene, 25.3-23.5 Ma). Because Palaeogale species are almost entirely distinguished by their lower dentition, the cranium cannot be identified to species. However, the cranium is the oldest occurrence of the genus in the Pacific Northwest. The absence of a posterior accessory cusp on the p4 and of lateral expansion of the m1 protoconid allows the dentaries to be assigned to an endemic North American species, P. dorothiae MacDonald, 1963. This is not only the first instance of this species in the Pacific Northwest and outside of South Dakota and Nebraska, but also the last known occurrence of P. dorothiae. We expect that these specimens will inform future analyses of phylogenetics, systematics, morphology, and biogeography in Palaeogale.
{"title":"First occurrences of Palaeogale von Meyer, 1846 in the Pacific Northwest, United States","authors":"Nicholas A. Famoso, J. Orcutt","doi":"10.5252/geodiversitas2022v44a14","DOIUrl":"https://doi.org/10.5252/geodiversitas2022v44a14","url":null,"abstract":"ABSTRACT The feliform carnivoran Palaeogale von Meyer, 1846 first appears in the Eocene of North America and had a Holarctic distribution in the Oligocene and early Miocene. Despite its large range, Palaeogale has not previously been reported from the Pacific Northwest of North America. We report three new specimens from the John Day Basin of Oregon that fill in this geographic gap. The oldest of these is a largely complete cranium from the Turtle Cove Member of the John Day Formation (Oligocene, 30.0-28.9 Ma). The other two specimens are a left and a right dentary from separate individuals, both recovered from the Kimberly Member (Oligocene, 25.3-23.5 Ma). Because Palaeogale species are almost entirely distinguished by their lower dentition, the cranium cannot be identified to species. However, the cranium is the oldest occurrence of the genus in the Pacific Northwest. The absence of a posterior accessory cusp on the p4 and of lateral expansion of the m1 protoconid allows the dentaries to be assigned to an endemic North American species, P. dorothiae MacDonald, 1963. This is not only the first instance of this species in the Pacific Northwest and outside of South Dakota and Nebraska, but also the last known occurrence of P. dorothiae. We expect that these specimens will inform future analyses of phylogenetics, systematics, morphology, and biogeography in Palaeogale.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2022-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44768249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2022-03-31DOI: 10.5252/geodiversitas2022v44a13
M. Hyžný, A. De Angeli
ABSTRACT Two specimens of Thalassina sp. are reported from the lower Oligocene sediments cropping out at Salcedo, Italy. Although the material is not sufficiently preserved to be identified below the genus level, it represents an important addition to the known fossil record of the genus. Thalassina sp. from Salcedo is considered the oldest and the only fossil occurrence of the genus from Europe; indeed, the previous reports on Thalassina grandidactylus Robineau Desvoidy, 1849 from the Cretaceous of France and Thalassina sp. from the Pliocene of Italy are disputed herein. Thalassina is today known only from the Indo-West Pacific region; however, unequivocal evidence of Thalassina in the Oligocene strata of Europe suggests the origin of the genus in the west Tethyan (modern circum-Mediterranean area). Alternatively, the geographic distribution of the genus might be wider in the Oligocene than it is today. The Italian material presented herein comes from marine settings with strong fluvial influence, suggesting that the environmental preferences of Thalassina have not changed since the Oligocene.
{"title":"Mud lobster Thalassina Latreille, 1806 (Decapoda: Gebiidea: Thalassinidae), its Cenozoic occurrences in Italy and palaeobiogeography","authors":"M. Hyžný, A. De Angeli","doi":"10.5252/geodiversitas2022v44a13","DOIUrl":"https://doi.org/10.5252/geodiversitas2022v44a13","url":null,"abstract":"ABSTRACT Two specimens of Thalassina sp. are reported from the lower Oligocene sediments cropping out at Salcedo, Italy. Although the material is not sufficiently preserved to be identified below the genus level, it represents an important addition to the known fossil record of the genus. Thalassina sp. from Salcedo is considered the oldest and the only fossil occurrence of the genus from Europe; indeed, the previous reports on Thalassina grandidactylus Robineau Desvoidy, 1849 from the Cretaceous of France and Thalassina sp. from the Pliocene of Italy are disputed herein. Thalassina is today known only from the Indo-West Pacific region; however, unequivocal evidence of Thalassina in the Oligocene strata of Europe suggests the origin of the genus in the west Tethyan (modern circum-Mediterranean area). Alternatively, the geographic distribution of the genus might be wider in the Oligocene than it is today. The Italian material presented herein comes from marine settings with strong fluvial influence, suggesting that the environmental preferences of Thalassina have not changed since the Oligocene.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43741049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2022-03-24DOI: 10.5252/geodiversi-tas2022v44a12
Evariste Monvoisin, R. Allain, E. Buffetaut, Laurent Picot
ABSTRACT Dinosaur remains found at the Vaches Noires cliffs (Calvados, Normandy) have usually been discovered by amateur palaeontologists. The bones come from carcasses which drifted away from a nearby land (Armorican Massif) during the upper Callovian and lower Oxfordian. Most of these bones belong to private collections and are hardly accessible. Consequently, many of these bones were never described. Thus, and for the first time, private and public collections are gathered to obtain a global vision of theropod remains from the Vaches Noires cliffs. Most of the dinosaur remains from this locality belong to theropods. Some bones are from the same individual but have been isolated as a result of cliff erosion and tidal action which also mixed specimens from different stratigraphic levels. This over-representation of theropod remains is enigmatic because it is not found in other similar deposits. A specific way of life is likely to explain that fact, but it could also be a simple statistical effect due to a limited sample. At least 3 taxa are tentatively identified: Streptospondylus altdorfensis Meyer, 1832, another megalosauroid and an allosauroid.
{"title":"New data on the theropod diversity from the Middle to Late Jurassic of the Vaches Noires cliffs (Normandy, France)","authors":"Evariste Monvoisin, R. Allain, E. Buffetaut, Laurent Picot","doi":"10.5252/geodiversi-tas2022v44a12","DOIUrl":"https://doi.org/10.5252/geodiversi-tas2022v44a12","url":null,"abstract":"ABSTRACT Dinosaur remains found at the Vaches Noires cliffs (Calvados, Normandy) have usually been discovered by amateur palaeontologists. The bones come from carcasses which drifted away from a nearby land (Armorican Massif) during the upper Callovian and lower Oxfordian. Most of these bones belong to private collections and are hardly accessible. Consequently, many of these bones were never described. Thus, and for the first time, private and public collections are gathered to obtain a global vision of theropod remains from the Vaches Noires cliffs. Most of the dinosaur remains from this locality belong to theropods. Some bones are from the same individual but have been isolated as a result of cliff erosion and tidal action which also mixed specimens from different stratigraphic levels. This over-representation of theropod remains is enigmatic because it is not found in other similar deposits. A specific way of life is likely to explain that fact, but it could also be a simple statistical effect due to a limited sample. At least 3 taxa are tentatively identified: Streptospondylus altdorfensis Meyer, 1832, another megalosauroid and an allosauroid.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2022-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42427583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2022-03-17DOI: 10.5252/geodiversitas2022v44a11
M. Faure, Ş. Şen, L. Costeur
RÉSUMÉ Dans les muséums d'histoire naturelle et autres institutions à vocation de conservation, les collections de fossiles sont les trésors des paléontologues. Elles sont les conservatoires du monde vivant des temps géologiques. Il importe aux paléontologues de connaître l'histoire des collections qu'ils consultent pour diverses raisons, que ce soit pour comparer les nouvelles découvertes avec les fossiles déjà connus ou pour réviser la systématique d'un groupe d'organismes ou d'une lignée évolutive. Dans cet article nous nous sommes intéressés à l'histoire de certaines collections de mammifères fossiles conservées dans les Muséums d'Histoire naturelle de Paris, de Bâle, ainsi qu'à l'Université Claude Bernard et au Muséum de Lyon. Derrière ces collections il y a un paysan d'Auvergne, Pierre Philis que Pierre Teilhard de Chardin a qualifié de « fossil hunter » dans une lettre adressée au Professeur Marcellin Boule en 1921, quand celui-ci l'a mandaté pour le rencontrer. P. Philis, né en 1880 dans le hameau de Senèze, commune de Domeyrat en Haute-Loire, a extrait du sous-sol de ses terres, mais aussi d'autres sites un peu partout en France, d'innombrables mammifères fossiles qui font aujourd'hui la richesse de ces musées et autres institutions. C'est probablement en voyant deux savants de Paris (M. Boule et A. Gaudry), accompagnés de notables de la région, venir en 1892 déterrer d'énormes ossements d'un mammouth dans un champ de son village qu'il a dû se passionner pour la recherche d'animaux fossiles. Dès le début des années 1900, il consacre tout son temps libre à la recherche de fossiles dans ses champs à Senèze et propose de vendre le fruit de ses récoltes à des paléontologues de divers pays d'Europe. Dès lors commence une correspondance fournie entre Philis et ses interlocuteurs, en particulier les paléontologues les plus connus de la première moitié du siècle: M. Boule et P. Teilhard de Chardin à Paris; C. Depéret, C. Gaillard, F. Roman et L. Mayet à Lyon; H. G. Stehlin, S. Schaub et H. Helbing à Bâle, pour ne citer que les plus célèbres. Durant 35 ans, de 1907 jusqu'à sa mort en 1942, P. Philis a entretenu une relation riche, qui va bien au-delà de simples rapports entre collecteur et acheteurs. Nous avons eu accès à 1300 lettres et cartes postales et à une quarantaine de documents de nature diverse, totalement inédits, conservés dans des archives familiales ou institutionnelles. Les collections du Muséum de Paris, du Musée des Confluences et de l'Université Claude Bernard à Lyon, et du Naturhistoriche Museum à Bâle, conservent plusieurs milliers de spécimens de mammifères fossiles récoltés par P. Philis à Senèze, mais aussi de nombreux autres gisements des départements de la Haute-Loire, du Puy-de Dôme, du Gard et du Vaucluse. Ces collections comportent de nombreux squelettes complets, dont certains sont toujours présentés dans les salles d'exposition permanente de ces musées. Pierre Philis a aussi loué ses services et son savoir de fouille
{"title":"Pierre Philis Fossil Hunter: un demi-siècle de recherches de vertébrés fossiles (1892-1942)","authors":"M. Faure, Ş. Şen, L. Costeur","doi":"10.5252/geodiversitas2022v44a11","DOIUrl":"https://doi.org/10.5252/geodiversitas2022v44a11","url":null,"abstract":"RÉSUMÉ Dans les muséums d'histoire naturelle et autres institutions à vocation de conservation, les collections de fossiles sont les trésors des paléontologues. Elles sont les conservatoires du monde vivant des temps géologiques. Il importe aux paléontologues de connaître l'histoire des collections qu'ils consultent pour diverses raisons, que ce soit pour comparer les nouvelles découvertes avec les fossiles déjà connus ou pour réviser la systématique d'un groupe d'organismes ou d'une lignée évolutive. Dans cet article nous nous sommes intéressés à l'histoire de certaines collections de mammifères fossiles conservées dans les Muséums d'Histoire naturelle de Paris, de Bâle, ainsi qu'à l'Université Claude Bernard et au Muséum de Lyon. Derrière ces collections il y a un paysan d'Auvergne, Pierre Philis que Pierre Teilhard de Chardin a qualifié de « fossil hunter » dans une lettre adressée au Professeur Marcellin Boule en 1921, quand celui-ci l'a mandaté pour le rencontrer. P. Philis, né en 1880 dans le hameau de Senèze, commune de Domeyrat en Haute-Loire, a extrait du sous-sol de ses terres, mais aussi d'autres sites un peu partout en France, d'innombrables mammifères fossiles qui font aujourd'hui la richesse de ces musées et autres institutions. C'est probablement en voyant deux savants de Paris (M. Boule et A. Gaudry), accompagnés de notables de la région, venir en 1892 déterrer d'énormes ossements d'un mammouth dans un champ de son village qu'il a dû se passionner pour la recherche d'animaux fossiles. Dès le début des années 1900, il consacre tout son temps libre à la recherche de fossiles dans ses champs à Senèze et propose de vendre le fruit de ses récoltes à des paléontologues de divers pays d'Europe. Dès lors commence une correspondance fournie entre Philis et ses interlocuteurs, en particulier les paléontologues les plus connus de la première moitié du siècle: M. Boule et P. Teilhard de Chardin à Paris; C. Depéret, C. Gaillard, F. Roman et L. Mayet à Lyon; H. G. Stehlin, S. Schaub et H. Helbing à Bâle, pour ne citer que les plus célèbres. Durant 35 ans, de 1907 jusqu'à sa mort en 1942, P. Philis a entretenu une relation riche, qui va bien au-delà de simples rapports entre collecteur et acheteurs. Nous avons eu accès à 1300 lettres et cartes postales et à une quarantaine de documents de nature diverse, totalement inédits, conservés dans des archives familiales ou institutionnelles. Les collections du Muséum de Paris, du Musée des Confluences et de l'Université Claude Bernard à Lyon, et du Naturhistoriche Museum à Bâle, conservent plusieurs milliers de spécimens de mammifères fossiles récoltés par P. Philis à Senèze, mais aussi de nombreux autres gisements des départements de la Haute-Loire, du Puy-de Dôme, du Gard et du Vaucluse. Ces collections comportent de nombreux squelettes complets, dont certains sont toujours présentés dans les salles d'exposition permanente de ces musées. Pierre Philis a aussi loué ses services et son savoir de fouille","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49026556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2022-03-10DOI: 10.5252/geodiversitas2022v44a10
Laura Bento Da Costa, B. Senut
ABSTRACT Essentially known from dental remains, the species Bathyergoides neotertiarius Stromer, 1923 (Bathyergidae, Rodentia) is widely recorded in Lower Miocene sites, notably in the localities of Elisabethfeld, Grillental and Langental (Namib Desert, Namibia). On the basis of dental morphology, this species belongs to the Bathyergidae, an extant family represented by the mole rats, which developed a fossorial, predominantly subterranean lifestyle. The discovery of a skeleton in connexion at the locality of GT Carrière (Grillental) permits description for the first time of the postcranials of Bathyergoides neotertiarius. Comparisons with extant rodent species suggest a similar behaviour to the Miocene ones, showing burrowing adaptations using principally the skull/mandible/incisor complex, evidenced by an accentuated robustness of these structures. The results of the postcranial analysis confirm the previous hypothesis, showing a robust anterior limb, probably used for the extraction of material during digging. However, a difference is seen in the robustness of the hind limb, being gracile in GT 50'06, but showing a prominent m. popliteus process, which suggests an important stabilization of the knee joint and an internal rotation of the lower limb allowing postural control in the burrows. The presence of a long tail distinguishes the Lower Miocene species from the extant subterranean rodents which exhibit short tails and recalls the morphology seen in modern semi-fossorial scratch-diggers such as Cricetomys gambianus Waterhouse, 1840. Thus, the specimen GT 50'06 shows clear fossorial adaptations, with a morphology close to the chisel-tooth diggers but exhibiting characteristics useful for a scratch-digging strategy.
{"title":"Skeleton of Early Miocene Bathyergoides neotertiarius Stromer, 1923 (Rodentia, Mammalia) from Namibia: behavioural implication","authors":"Laura Bento Da Costa, B. Senut","doi":"10.5252/geodiversitas2022v44a10","DOIUrl":"https://doi.org/10.5252/geodiversitas2022v44a10","url":null,"abstract":"ABSTRACT Essentially known from dental remains, the species Bathyergoides neotertiarius Stromer, 1923 (Bathyergidae, Rodentia) is widely recorded in Lower Miocene sites, notably in the localities of Elisabethfeld, Grillental and Langental (Namib Desert, Namibia). On the basis of dental morphology, this species belongs to the Bathyergidae, an extant family represented by the mole rats, which developed a fossorial, predominantly subterranean lifestyle. The discovery of a skeleton in connexion at the locality of GT Carrière (Grillental) permits description for the first time of the postcranials of Bathyergoides neotertiarius. Comparisons with extant rodent species suggest a similar behaviour to the Miocene ones, showing burrowing adaptations using principally the skull/mandible/incisor complex, evidenced by an accentuated robustness of these structures. The results of the postcranial analysis confirm the previous hypothesis, showing a robust anterior limb, probably used for the extraction of material during digging. However, a difference is seen in the robustness of the hind limb, being gracile in GT 50'06, but showing a prominent m. popliteus process, which suggests an important stabilization of the knee joint and an internal rotation of the lower limb allowing postural control in the burrows. The presence of a long tail distinguishes the Lower Miocene species from the extant subterranean rodents which exhibit short tails and recalls the morphology seen in modern semi-fossorial scratch-diggers such as Cricetomys gambianus Waterhouse, 1840. Thus, the specimen GT 50'06 shows clear fossorial adaptations, with a morphology close to the chisel-tooth diggers but exhibiting characteristics useful for a scratch-digging strategy.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2022-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47969936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2022-03-03DOI: 10.5252/geodiversitas2022v44a9
J. Devillez, S. Charbonnier
ABSTRACT A synthesis of our current knowledge of erymoid lobsters is presented. The superfamily Erymoidea includes two families, Erymidae Van Straelen, 1925 and Enoploclytiidae Devillez, Charbonnier & Barriel, 2019, together encompassing 81 species within six genera. Our examination of the palaeobiodiversity of this group and its evolution has revealed some variations through the Mesozoic with three important peaks, at the boundaries of: 1) Lower-Middle Jurassic; 2) Middle-Upper Jurassic; and 3) Lower-Upper Cretaceous. Whereas the origin of the first peak remains poorly known, the two others coincide with major modifications of the environment: the development of the European Jurassic carbonate platforms and the development of the European Chalk Sea and the partial flooding of North America during the mid- and Late Cretaceous. In addition to a notable peak of diversity, the Cretaceous is an important time interval in the evolutionary history of erymoids because the Early Cretaceous represented a long period of relatively low diversity and during the Late Cretaceous a strong decline of erymoid faunas is observed in Europe. However, the erymoids had already attained a worldwide distribution during the Early Cretaceous with occurrences in all oceans of the time. The analysis of the palaeobiogeographic distribution of these lobsters suggests the presence of important migratory paths, which probably favoured their spread and faunal exchanges between different areas across the globe.
摘要本文综合介绍了我们目前对杏鲍龙虾的认识。Erymoidea超科包括两个科，分别是Erymidae Van Straelen，1925和Enoploclytidae Devillez，Charbonnier&Barriel，2019，共包含六属81种。我们对该群的古生物多样性及其演化的研究揭示了中生代的一些变化，有三个重要的峰值，位于：1）侏罗纪下中期；2） 中上侏罗世；和3）上白垩纪下统。尽管第一个峰值的起源尚不清楚，但其他两个峰值与环境的重大变化相吻合：欧洲侏罗纪碳酸盐岩平台的发展、欧洲白垩海的发展以及白垩纪中晚期北美的部分洪水。除了一个显著的多样性高峰外，白垩纪也是梨形目动物进化史上的一个重要时间间隔，因为早白垩纪代表了一个相对较低的长期多样性，而在晚白垩世期间，欧洲观察到梨形目生物群的强烈衰退。然而，在白垩纪早期，erymoids已经在世界范围内分布，在当时的所有海洋中都有分布。对这些龙虾的古生物地理分布的分析表明，它们存在重要的迁徙路径，这可能有利于它们在全球不同地区之间的传播和动物群交流。
{"title":"A synthesis of the evolutionary history of erymoid lobsters (Crustacea, Decapoda, Erymoidea)","authors":"J. Devillez, S. Charbonnier","doi":"10.5252/geodiversitas2022v44a9","DOIUrl":"https://doi.org/10.5252/geodiversitas2022v44a9","url":null,"abstract":"ABSTRACT A synthesis of our current knowledge of erymoid lobsters is presented. The superfamily Erymoidea includes two families, Erymidae Van Straelen, 1925 and Enoploclytiidae Devillez, Charbonnier & Barriel, 2019, together encompassing 81 species within six genera. Our examination of the palaeobiodiversity of this group and its evolution has revealed some variations through the Mesozoic with three important peaks, at the boundaries of: 1) Lower-Middle Jurassic; 2) Middle-Upper Jurassic; and 3) Lower-Upper Cretaceous. Whereas the origin of the first peak remains poorly known, the two others coincide with major modifications of the environment: the development of the European Jurassic carbonate platforms and the development of the European Chalk Sea and the partial flooding of North America during the mid- and Late Cretaceous. In addition to a notable peak of diversity, the Cretaceous is an important time interval in the evolutionary history of erymoids because the Early Cretaceous represented a long period of relatively low diversity and during the Late Cretaceous a strong decline of erymoid faunas is observed in Europe. However, the erymoids had already attained a worldwide distribution during the Early Cretaceous with occurrences in all oceans of the time. The analysis of the palaeobiogeographic distribution of these lobsters suggests the presence of important migratory paths, which probably favoured their spread and faunal exchanges between different areas across the globe.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2022-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45807070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2022-02-17DOI: 10.5252/geodiversitas2022v44a8
Emmanuelle Stoetzel, M. Pickford
RÉSUMÉ La présente étude porte sur l'analyse d'un assemblage inédit de restes de microvertébrés récoltés en 1910 à Ben Kérat, dans le nord-est de l'Algérie. L'objectif principal de cette étude était d'évaluer le potentiel paléontologique du site, et de préciser son contexte géologique et chronologique. L'assemblage étudié obtenu à partir de plusieurs échantillons de brèche comprend 362 restes identifiés, appartenant à 44 individus et 11 taxons: six rongeurs appartenant aux genres Gerbillus Desmarest, 1804, Meriones Illiger, 1811, Paraethomys Petter, 1968, Mus Linnaeus, 1758, Praomys Thomas, 1915 et Ellobius Fischer, 1814, deux soricidés du genre Crocidura Wagler, 1832, un amphibien anoure, un lézard lacertidé et un serpent colubridé, indiquant un âge situé vers la fin du Pléistocène moyen. Bien que le spectre faunique global soit similaire à d'autres assemblages de sites maghrébins du Pléistocène moyen, les spécimens de Ben Kérat présentent des caractéristiques dentaires particulières, pouvant traduire soit une période d'amélioration climatique dans un contexte plus global d'aridification et de refroidissement croissant, soit une particularité régionale avec notamment des nouvelles formes de Paraethomys et de Mus ne s'insérant pas dans les lignées évolutives connues jusqu'ici en Afrique du Nord.
{"title":"Étude d'un assemblage original de microvertébrés du Pléistocène moyen du nord-est de l'Algérie (Ben Kérat, Oued Zenati) et description de deux nouveaux muridés","authors":"Emmanuelle Stoetzel, M. Pickford","doi":"10.5252/geodiversitas2022v44a8","DOIUrl":"https://doi.org/10.5252/geodiversitas2022v44a8","url":null,"abstract":"RÉSUMÉ La présente étude porte sur l'analyse d'un assemblage inédit de restes de microvertébrés récoltés en 1910 à Ben Kérat, dans le nord-est de l'Algérie. L'objectif principal de cette étude était d'évaluer le potentiel paléontologique du site, et de préciser son contexte géologique et chronologique. L'assemblage étudié obtenu à partir de plusieurs échantillons de brèche comprend 362 restes identifiés, appartenant à 44 individus et 11 taxons: six rongeurs appartenant aux genres Gerbillus Desmarest, 1804, Meriones Illiger, 1811, Paraethomys Petter, 1968, Mus Linnaeus, 1758, Praomys Thomas, 1915 et Ellobius Fischer, 1814, deux soricidés du genre Crocidura Wagler, 1832, un amphibien anoure, un lézard lacertidé et un serpent colubridé, indiquant un âge situé vers la fin du Pléistocène moyen. Bien que le spectre faunique global soit similaire à d'autres assemblages de sites maghrébins du Pléistocène moyen, les spécimens de Ben Kérat présentent des caractéristiques dentaires particulières, pouvant traduire soit une période d'amélioration climatique dans un contexte plus global d'aridification et de refroidissement croissant, soit une particularité régionale avec notamment des nouvelles formes de Paraethomys et de Mus ne s'insérant pas dans les lignées évolutives connues jusqu'ici en Afrique du Nord.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2022-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46009433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2022-02-14DOI: 10.5252/geodiversitas2022v44a7
A. Villa, M. Delfino
ABSTRACT In the ‘50s of the XX century, a German expedition lead by Richard Dehm collected a large amount of fossil remains from northern Pakistan. Among these was an isolated trunk vertebra of a lizard, which is here referred to Varanus sp. The collecting site of this specimen is not precisely known, but it most likely comes from middle to early late Miocene Siwalik sediments of the Chinji Formation. This is the first published record of a fossil lizard from the Neogene of Pakistan and adds to the very patchy record of Varanus Merrem, 1820 in Asia. It further supports previous reconstructions of a warm climate for the middle to early late Miocene of the Siwaliks.
{"title":"First fossil of Varanus Merrem, 1820 (Squamata: Varanidae) from the Miocene Siwaliks of Pakistan","authors":"A. Villa, M. Delfino","doi":"10.5252/geodiversitas2022v44a7","DOIUrl":"https://doi.org/10.5252/geodiversitas2022v44a7","url":null,"abstract":"ABSTRACT In the ‘50s of the XX century, a German expedition lead by Richard Dehm collected a large amount of fossil remains from northern Pakistan. Among these was an isolated trunk vertebra of a lizard, which is here referred to Varanus sp. The collecting site of this specimen is not precisely known, but it most likely comes from middle to early late Miocene Siwalik sediments of the Chinji Formation. This is the first published record of a fossil lizard from the Neogene of Pakistan and adds to the very patchy record of Varanus Merrem, 1820 in Asia. It further supports previous reconstructions of a warm climate for the middle to early late Miocene of the Siwaliks.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2022-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47163190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2022-02-10DOI: 10.5252/geodiversitas2022v44a6
À. Ossó, Cyril Gagnaison, Olivier Gain
ABSTRACT The access to a new collection of decapod crustaceans collected from the middle-late Miocene ‘Faluns’, and examination of new specimens available, have allowed to expand the previous compilations by Couffon (1908) and Ossó & Gagnaison (2019), elevating to nineteen the species reported, representatives of seventeen genera and fourteen families. Squat lobsters and parthenopid crabs are reported for the first time in the Atlantic Miocene of France. The expected presence of Xantho moldavicus (Yanakevich, 1977) and Lobocarcinus sismondai (von Meyer, 1843), hitherto known only by chelae, is confirmed herein. The status of Haydnella pulchellus (A. Milne-Edwards, 1864) is discussed. Moreover, the ventral features of Necronectes michelini (A. Milne-Edwards, 1861) are described for the first time. This decapod assemblage presents clear affinity with coeval decapod faunas from the Mediterranean and Paratethys realm, as evidenced by the presence of identical species such as Liocarcinus kuehni (Bachmayer, 1953) or Pilumnus mediterraneus (Lőrenthey, 1897), which is by far, the most common decapod in the ‘Faluns’ outcrops. Several different chelae and carapace remains are left in open nomenclature.
{"title":"A re-appraisal of the middle-late Miocene fossil decapod crustaceans of the ‘Faluns’ (Anjou-Touraine, France)","authors":"À. Ossó, Cyril Gagnaison, Olivier Gain","doi":"10.5252/geodiversitas2022v44a6","DOIUrl":"https://doi.org/10.5252/geodiversitas2022v44a6","url":null,"abstract":"ABSTRACT The access to a new collection of decapod crustaceans collected from the middle-late Miocene ‘Faluns’, and examination of new specimens available, have allowed to expand the previous compilations by Couffon (1908) and Ossó & Gagnaison (2019), elevating to nineteen the species reported, representatives of seventeen genera and fourteen families. Squat lobsters and parthenopid crabs are reported for the first time in the Atlantic Miocene of France. The expected presence of Xantho moldavicus (Yanakevich, 1977) and Lobocarcinus sismondai (von Meyer, 1843), hitherto known only by chelae, is confirmed herein. The status of Haydnella pulchellus (A. Milne-Edwards, 1864) is discussed. Moreover, the ventral features of Necronectes michelini (A. Milne-Edwards, 1861) are described for the first time. This decapod assemblage presents clear affinity with coeval decapod faunas from the Mediterranean and Paratethys realm, as evidenced by the presence of identical species such as Liocarcinus kuehni (Bachmayer, 1953) or Pilumnus mediterraneus (Lőrenthey, 1897), which is by far, the most common decapod in the ‘Faluns’ outcrops. Several different chelae and carapace remains are left in open nomenclature.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2022-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44484695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：