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Dromomeron gregorii

Reptilia

Taxonomy
Dromomeron gregorii was named by Nesbitt et al. (2009). Its type specimen is TMM 31100-1306, a limb element (Femur), and it is a 3D body fossil. Its type locality is Otis Chalk Quarry 3, TMM 31100, which is in a Carnian/Norian crevasse splay mudstone in the Colorado City Formation of Texas.

Synonymy list
YearName and author
2009Dromomeron gregorii Nesbitt et al. p. 499 figs. 2, 5, 9
2010Dromomeron gregorii Langer et al. p. 58
2011Dromomeron gregorii Nesbitt p. 44
2014Dromomeron gregorii Marzola and Dalla Vecchia p. 13
2016Dromomeron gregorii Griffin and Nesbitt p. 2
2016Dromomeron gregorii Martínez et al. p. 2
2018Dromomeron gregorii Marsh p. 1
2019Dromomeron gregorii Martz and Small p. 2

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
RankNameAuthor
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
PterosauromorphaPadian 1997
Lagerpetidae()
genusDromomeron
speciesgregorii

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Dromomeron gregorii Nesbitt et al. 2009
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Diagnosis
ReferenceDiagnosis
S. J. Nesbitt et al. 2009Differs from Dromomeron romeri in possessing a distinct ridge for the attachment of the M. caudifemoralis longus (=4th trochanter), the presence of an anterior trochanter and trochanteric shelf, robust proximal and distal ends of the femora, the intercondylar groove of the distal femur is reduced to a slit in larger specimens (possible autapomorphy), and the lack of an anteromedial concavity on the distal end of the tibia.