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Dromomeron romeri

Reptilia

Taxonomy
Dromomeron romeri was named by Irmis et al. (2007). Its type specimen is GR 218, a set of limb elements, and it is not a trace fossil. Its type locality is Hayden Quarry, Ghost Ranch (site 3), which is in a Norian coarse channel fill conglomerate/siltstone in the Chinle Formation of New Mexico.

Synonymy list
YearName and author
2007Dromomeron romeri Irmis et al. p. 359 figs. 2A-D
2009Dromomeron romeri Bittencourt and Kellner p. 42
2009Dromomeron romeri Martínez and Alcober p. 1
2009Dromomeron romeri Nesbitt et al. p. 499
2010Dromomeron romeri Langer et al. p. 58
2011Dromomeron romeri Nesbitt p. 45
2016Dromomeron romeri Griffin and Nesbitt p. 10
2016Dromomeron romeri Martínez et al. p. 2
2019Dromomeron romeri 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
speciesromeri

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 romeri Irmis et al. 2007
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Diagnosis
ReferenceDiagnosis
S. J. Nesbitt et al. 2009Differs from Dromomeron gregorii (see below) and all other basal dinosauromorphs in possessing the following autapomorphies: 1) absence of a distinct ridge for the attachment of the M. caudifemoralis longus (=4th trochanter); 2) presence of a sharp ridge on the anteromedial edge of the distal end of the femur; 3) presence of a lateral tuberosity on the anterolateral edge of the distal end of the femur; and 4) a large crest on the anteromedial edge of the astragalus and associated anteromedial concavity on the distal tibia.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Created: 2017-04-17 15:16:03
Modified: 2017-04-17 15:16:03
Source: subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Carroll 1988

Age range: base of the Lacian to the top of the Sevatian or 221.50000 to 205.60000 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Norian228.0 - 208.5USA (Texas) Dromomeron romeri (84269 196354)
Norian228.0 - 208.5USA (New Mexico) Dromomeron romeri (52498 type locality: 74202)
Norian - Rhaetian228.0 - 201.3USA (Colorado) Dromomeron romeri (92089)
Lacian - Sevatian221.5 - 205.6USA (New Mexico) Dromomeron romeri (62311)
Rhaetian208.5 - 201.3USA (Arizona) Dromomeron romeri (198618)