Systématique du groupe « Palaeochelys sensu lato – Mauremys » (Chelonii, Testudinoidea) du Tertiaire d’Europe occidentale : principaux résultats

Hervet, Sophie

doi:10.1016/j.annpal.2003.12.002

Cited by 53 publications

(57 citation statements)

References 14 publications

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“…In fact, in M. campanii it varies between 0.333 (in IGF-11762V) and 0.438 (in MSNTUP-I10491) (Table 1), similar to the morphological intervals of the fossil M. gaudryi (0.356) and of the extant M. leprosa (0.290 Ͻ x Ͻ 0.471) and M. caspica (0.265 Ͻ x Ͻ 0.423), whereas in the Miocene species M. sarmatica and M. pygolopha the cervical length is less than 30% of the nuchal length (Hervet, 2003(Hervet, , 2004.…”

Section: Resultsmentioning

confidence: 64%

“…Together with M. gaudryi, the Tuscan remains present the highest range of the V1/Nu width ratio: it is at least more than 1.3, reaching the highest value of 1.563 in IGF-11759V (see Table 1), very similar to the value of 1.543 attested in M. gaudryi (Hervet, 2003). Correlated to this feature, the presence of a wide contact between V1 and M2 is attested in fact only in M. sarmatica and in more crownward taxa (Hervet, 2004), but usually this contact is placed far from the Per1-2 suture, with the exception of M. campanii and M. gaudryi, in which the V1-M2 junction nearly traverses the Per1-2 suture.…”

Section: Resultsmentioning

confidence: 99%

“…The first vertebral is wide as the nuchal in M. massiliensis (Oligocene, France) and M. pygolopha, and becomes wider in M. sarmatica (and M. 'sophiae') and in more derived species (Peters, 1868;Purschke, 1885;Ammon, 1911;Bergounioux, 1936;Hervet, 2004). Together with M. gaudryi, the Tuscan remains present the highest range of the V1/Nu width ratio: it is at least more than 1.3, reaching the highest value of 1.563 in IGF-11759V (see Table 1), very similar to the value of 1.543 attested in M. gaudryi (Hervet, 2003).…”

Section: Resultsmentioning

confidence: 99%

“…The morphology of the late Miocene terrapins from southern Tuscany was compared with that of the fossil species of the genus Mauremys (see Hervet, 2000Hervet, , 2003Hervet, , 2004. Anatomical nomenclature follows Lapparent (2001), whereas taxonomic nomenclature follows Fritz and Havaš (2007).…”

Section: Methodsmentioning

confidence: 99%

“…After about one century, Guasparri (1992) figured an unpublished fragment attributed by label to E. depressa and suggested that all the Emys remains from Montebamboli and Casteani most probably belong to this species. Recently, Delfino (2002), on the basis of a critical revision of the literature, suggested that E. depressa is the sole taxon whose remains are probably representative to justify specific identification, and that the differences within the genus Emys are so striking as to support its taxonomic attribution to a different genus, namely Mauremys Gray, 1869, present in Europe from the late Oligocene to the present (Hervet, 2000(Hervet, , 2004Lapparent, 2001).…”

Section: Introductionmentioning

confidence: 99%

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Late MioceneMauremys(Testudines, Geoemydidae) from Tuscany (Italy): Evidence of terrapin persistence after a mammal turnover

2009

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ABSTRACT-The occurrence of freshwater turtle remains in the late Miocene lignites of southern Tuscany (Montebamboli and Casteani, Italy) has been known since the nineteenth century. Three chelonian species were recognized by Ristori in 1891: Emys depressa, E. campanii, and E. parva. Revision of their type material, together with the study of new fossils from a different but correlated locality, Pian Calcinaio (Scansano), allows one to state that they can be referred to the genus Mauremys and that they belong to one single species. The new combination M. campanii (Ristori, 1891) is here proposed. Phylogenetic analysis indicates that M. campanii is closely related to the modern post-Miocene group of Mauremys species and shows a sister-group relationship with the Plio-Pleistocene M. gaudryi. The remains of M. campanii come from an insular setting which progressively lost its endemic mammal fauna, defined as the Oreopithecus Zone Fauna, enabling us to compare the pattern of survival of the chelonians with that of the mammals. In contrast to the radical turnover suffered by mammals, softshell turtles (Trionyx sp.) and terrapins (M. campanii) are present both in the pre-Messinian V1-V2 and Messinian V3 assemblages. Terrestrial tortoises (Testudo amiatae Pantanelli, 1893, Testudo s.l.) show a different pattern, because they appear only in the V3 assemblage, possibly because they apparently dispersed into Italy as recently as the Messinian. M. campanii represents the southernmost evidence of the genus Mauremys in the uppermost Miocene of Europe, filling a gap in the palaeogeographic and chronological distribution of this genus.

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Section: Resultsmentioning

confidence: 64%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Late MioceneMauremys(Testudines, Geoemydidae) from Tuscany (Italy): Evidence of terrapin persistence after a mammal turnover

2009

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Geometric morphometrics and anatomical network analyses reveal ecospace partitioning among geoemydid turtles from the Uinta Formation, Utah

Adrian

Smith

Hutchison

et al. 2021

The Anatomical Record

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We present new fossil records of the geoemydid turtle Bridgeremys pusilla from the Uinta Formation of Utah. Turtles are abundant throughout the unit, and known taxa are similar to those from the older strata in the Upper Green River Basin in Wyoming from the Bridger and Washakie Formations. B. pusilla is known from Bridgerian deposits but was not previously known from after the Turtle Bluff Member of the Bridger Formation. The taxon was coveal with two species of the geoemydid Echmatemys (E. callopyge and E. wyomingensis), a common genus of extinct pond turtles known primarily from lacustrine and fluvial deposits in western North America, including the Uinta Basin. In addition to previously documented morphological differences, our geometric morphometric analyses revealed significant differences in epiplastral morphology between B. pusilla and the two coeval Echmatemys species. Bridgeremys pusilla shared several morphological characters with Testudinidae. However, our anatomical network analysis suggests that the carapace of B. pusilla distributed stress forces in a manner more similar to emydids (basal and derived) than to derived testudinoids (Testudinidae and Emydidae), including Echmatemys species. This finding changes our understanding of the ecology of the species and sheds light onto how geoemydid turtles of the Uinta Formation may have partitioned the available ecospace. These new Uintan records extend the geographic range of B. pusilla into the Uinta Basin and stratigraphically through the top of the Uinta Formation, extending the temporal range of the taxon by more than 4 million years through the Uintan North American Land Mammal Age to the base of the Duchesne River Formation.

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A pan‐chelydrid, Chelydropsis aubasi sp. nov., from the Middle Eocene (MP 15, early Bartonian) of Chéry‐Chartreuve, France

Joyce

Landréat²,

Rollot

2022

The Anatomical Record

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Snapping turtles (Pan‐Chelydridae) play an important role in modern ecosystems throughout North America, but their fossil record is notably poor. We here describe a new species of fossil pan‐chelydrid, Chelydropsis aubasi, from the Middle Eocene (MP15, Bartonian) of Chéry‐Chartreuve, Department of Aisne, France, based on a series of fragments that document most of the shell. The new species not only bridges the morphological gap between earlier pan‐chelydrids from North America and later pan‐chelydrids from Europe but also advances the arrival of the group from North America to Europe by at least 10 million years. Although pan‐chelydrids are notably absent from Early and Middle Eocene localities throughout Europe, the new fossil gives credence to the idea that pan‐chelydrids may have dispersed from North America to Europe in concert with other turtles during the Paleocene–Eocene Thermal Maximum, but remain undetected to date.

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Systématique du groupe « Palaeochelys sensu lato – Mauremys » (Chelonii, Testudinoidea) du Tertiaire d’Europe occidentale : principaux résultats

Cited by 53 publications

References 14 publications

Late MioceneMauremys(Testudines, Geoemydidae) from Tuscany (Italy): Evidence of terrapin persistence after a mammal turnover

Late MioceneMauremys(Testudines, Geoemydidae) from Tuscany (Italy): Evidence of terrapin persistence after a mammal turnover

Geometric morphometrics and anatomical network analyses reveal ecospace partitioning among geoemydid turtles from the Uinta Formation, Utah

A pan‐chelydrid, Chelydropsis aubasi sp. nov., from the Middle Eocene (MP 15, early Bartonian) of Chéry‐Chartreuve, France

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