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Eoraptor lunensis
Taxonomy
Eoraptor lunensis was named by Sereno et al. (1993). Its type specimen is PVSJ 512 and is a 3D body fossil. Its type locality is northeast edge, Cancha de Bochas, which is in a Tuvalian terrestrial siltstone in the Ischigualasto Formation of Argentina.
Synonymy list
| Year | Name and author |
|---|---|
| 1993 | Eoraptor lunensis Sereno et al. pp. 64-66 figs. 1-2 |
| 1997 | Eoraptor lunensis Novas p. 303 |
| 1997 | Eoraptor lunensis Ryan and Vickaryous p. 169 |
| 2003 | Eoraptor lunensis Langer p. 1 |
| 2003 | Eoraptor lunensis Rauhut p. 13 |
| 2004 | Eoraptor lunensis Langer p. 27 |
| 2005 | Eoraptor lunensis Yates p. 117 |
| 2006 | Eoraptor lunensis Langer and Benton p. 311 |
| 2006 | Eoraptor lunensis Thulborn p. 288 |
| 2007 | Eoraptor lunensis Sampson and Witmer p. 38 |
| 2007 | Eoraptor lunensis Upchurch et al. p. 75 |
| 2008 | Eoraptor lunensis Ezcurra and Novas p. 88 |
| 2009 | Eoraptor lunensis Bittencourt and Kellner p. 9 |
| 2009 | Eoraptor lunensis Martínez and Alcober p. 2 |
| 2010 | Eoraptor lunensis Alcober and Martínez p. 57 |
| 2010 | Eoraptor lunensis Langer et al. p. 62 |
| 2011 | Eoraptor lunensis Apaldetti et al. p. 4 |
| 2011 | Eoraptor lunensis Sues et al. p. 3460 |
| 2013 | Eoraptor lunensis Sereno et al. p. 93–94 |
| 2014 | Eoraptor lunensis Hendrickx and Mateus p. 20 |
| 2014 | Eoraptor lunensis Marzola and Dalla Vecchia p. 13 |
| 2015 | Eoraptor lunensis Nesbitt and Ezcurra p. 519 |
| 2016 | Eoraptor lunensis Pinheiro p. 214 |
| 2017 | Eoraptor lunensis Ezcurra p. 513 |
| 2020 | Eoraptor lunensis Moro et al. |
| 2021 | Eoraptor lunensis Müller and Garcia p. 5 |
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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.
†Eoraptor lunensis Sereno et al. 1993
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. C. Sereno et al. 2013 | Small basal sauropodomorph with the following autapomorphies: premaxilla posterolateral process slender with tongue-shaped distal expansion; nasal with transversely broad, horizontal shelf with a convex lateral margin that overhangs the antorbital fossa; pterygoid process on posterior palate margin that articulates laterally in a synovial socket in the ectopterygoid; narrow premaxilla-maxilla diastema approximately one crown in width; maxillary crowns with a prominent lateral eminence; accessory articular process on the medial aspect of midcervical prezygapophyses; extreme hollowing of dorsal centra and neural arches.
Eoraptor lunensis can be differentiated from Panphagia protos by its shallow neurovascular groove on the lateral aspect of the dentary, less pronounced ridge on the lateral aspect of the surangular, less expanded distal scapular blade (approximately twice neck width), more perpendicular distal border on scapular bade, longer pubic blades (more than four times distal blade width), tibial cnemial crest and opposing proximal condyles more anteroposteriorly expanded, tibial distal end more transversely expanded, and the ascending process and posterior fossa on the astragalus much broader transversely (approximately one-third the width of the astragalus). Eoraptor lunensis can be differentiated from Chromogisaurus novasi by the more strongly inturned femoral head, the markedly asymmetrical shape of the fourth trochanter, the tibial cnemial crest and opposing proximal condyles more anteroposteriorly expanded, and the tibial distal end more transversely expanded. Several of these points of distinction may have been influenced by weathering or crushing in Chromogisaurus novasi, which is not as well preserved as material pertaining to Eoraptor lunensis. |
Measurements
No measurements are available
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| Source: g = genus, subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988, Peczkis 1995 | |||||