Primates and Plesiadapiformes from Cos (Eocene; Quercy, France)

Guillaume, Marc; Blondel, Cécile; Escarguel, Gilles; Lézin, Carine; Pélissié, Thierry; Tabuce, Rodolphe; Vidalenc, Dominique

doi:10.1016/j.geobios.2021.03.004

Cited by 2 publications

(4 citation statements)

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“…The analysis included 25 described species of paromomyids, in addition to the two newly described species in the present study. Although the recently described Arcius moniquae (Godinot et al, 2021) was not included in our analysis, its exclusion would likely have little to no effect on the positions of E. greggi and I. glenbowensis given the robust sampling of Arcius in our dataset (i.e., six out of seven species represented). Non-paromomyid plesiadapiforms were included as immediate outgroups, including palaechthonids (Premnoides Gunnell, 1989, Plesiolestes Jepsen, 1930, Torrejonia Gazin, 1968, and Palaechthon Gidley, 1923, one micromomyid (Foxomomys Chester and Bloch, 2013), one microsyopid (Navajovius Matthew and Granger, 1921), and one purgatoriid (Purgatorius Van Valen and Sloan, 1965).…”

Section: Methodsmentioning

confidence: 99%

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New paromomyids (Mammalia, Primates) from the Paleocene of southwestern Alberta, Canada, and an analysis of paromomyid interrelationships

et al. 2023

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Paromomyidae are one of several families of plesiadapiforms that flourished during the Paleocene in North America soon after the extinction of non-avian dinosaurs some 66 million years ago. Although they are often among the best-represented plesiadapiforms in mammalian faunas in both North America and Europe, the early history of paromomyids is poorly understood, and their fossil record at higher latitudes is comparatively depauperate. We report here on the discovery of two new species of paromomyids from Paleocene deposits in southwestern Alberta: Edworthia greggi new species is the second known species of the basal paromomyid Edworthia Fox, Scott, and Rankin, 2010 whereas Ignacius glenbowensis new species is among the most abundantly represented species of Ignacius Matthew and Granger, 1921. These new discoveries document, for the first time, parts of the upper dentition of Edworthia, and the new species of Ignacius represents the first new, pre-Clarkforkian species of the genus to be described in nearly 100 years. A comprehensive phylogenetic analysis of nearly all known paromomyid taxa (including the new species described herein) recovered both species of Edworthia near the base of the paromomyid tree in a polytomy with Paromomys depressidens Gidley, 1923 and a paraphyletic Ignacius. The new paromomyids from Alberta not only increase the known taxonomic diversity of Edworthia and Ignacius but also add significantly to knowledge of the dental anatomy of these poorly known genera and further add to a uniquely Canadian complement of Paleocene plesiadapiforms. UUID: http://zoobank.org/a2f31cfe-09b9-4168-b09f-9d0c3d0af342

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

New paromomyids (Mammalia, Primates) from the Paleocene of southwestern Alberta, Canada, and an analysis of paromomyid interrelationships

et al. 2023

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“…Cos constitutes the seventh pre-upper Eocene locality of Phosphorites du Quercy (for others see Astruc et al [2003]: Pasturat [MP 8 + 9], Viélase and Cazals [both MP 10–11], Cuzal, Parnac and Grélaou [all MP 13]). Based on the studies of the primates (Godinot et al, 2021) and rodents (Vianey-Liaud et al, 2022), the vertebrate fauna of the Cos site has been dated as MP 10–11, a zone that spans the late Ypresian and early Lutetian. Thus, it corresponds to the Early Eocene Climatic Optimum (EECO; see Inglis et al, 2020), which is dated as 53.3–49.1 Ma.…”

Section: Introductionmentioning

confidence: 99%

“…There are a few scattered vertebrate fossils through the entire section. The fauna recovered includes amphibians, squamates, crocodilians, birds, and more than 20 mammal species among which only primates and rodents have been studied (Godinot et al, 2021; Vianey-Liaud et al, 2022). All of the specimens described herein are from the Cos fissure fill of the Phosphorites du Quercy region and are lower Eocene (MP 10–11 interval) in age.…”

Section: Introductionmentioning

confidence: 99%

Anguimorph lizards from the lower Eocene (MP 10–11) of the Cos locality, Phosphorites du Quercy, France, and the early evolution of Glyptosaurinae in Europe

Čerňanský

Tabuce

Vidalenc

2022

Journal of Vertebrate Paleontology

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Squamate faunas from the lower Eocene of Europe are rare. A newly discovered lower Eocene Cos locality in southwestern France has yielded an assemblage of anguimorph lizards that sheds light on the early evolution of this group. Among them is a new glyptosaurine lizard Sullivania gallica gen. et sp. nov., based on frontal material with a unique pattern and distribution of polygonal osteoderms that is distinct from that of the middle and late Eocene Placosaurus from France. It slightly resembles the stratigraphically older glyptosaurine Gaultia silvaticus from the earliest Eocene of North America, but differs from it in several aspects. Although fossils of some members of Glyptosaurinae (sensu this paper; Glyptosaurini in previous taxonomies-Glyptosaurinae is returned to the family level originally proposed by Marsh) have been documented rarely from the middle and mainly from the late Eocene of Europe, they are virtually unknown from the lower Eocene. One isolated osteoderm is referred only to Anguioidea indet. This specimen resembles osteoderms seen in Anguinae, provided that the absence of tuberclulate ornamentation is not caused by abrasion. Varanoids are represented by an isolated frontal referred to Palaeovaranidae indet. It possesses a complex ornamentation composed of mounds on the dorsal surface. A maxilla is identified as an indeterminate varanoid based on the plicidentine infolding along the bases of the preserved teeth. Although incomplete, this Cos lizard assemblage is an important and rare discovery that provides a glimpse into the ecosystems and paleobiodiversity of the lower Eocene in western Europe. http://zoobank.org/urn:lsid:zoobank.org:pub:5C6376A3-CC26-4CF1-BE56-E7279D508D5D

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Primates and Plesiadapiformes from Cos (Eocene; Quercy, France)

Cited by 2 publications

References 31 publications

New paromomyids (Mammalia, Primates) from the Paleocene of southwestern Alberta, Canada, and an analysis of paromomyid interrelationships

New paromomyids (Mammalia, Primates) from the Paleocene of southwestern Alberta, Canada, and an analysis of paromomyid interrelationships

Anguimorph lizards from the lower Eocene (MP 10–11) of the Cos locality, Phosphorites du Quercy, France, and the early evolution of Glyptosaurinae in Europe

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