| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Leaellynasaura amicagraphica
Taxonomy
Leaellynasaura amicagraphica was named by Rich and Vickers-Rich (1989). Its type specimen is NMV P185991, a partial skull, and it is a 3D body fossil. Its type locality is Slippery Rock, Dinosaur Cove, which is in an Albian crevasse splay sandstone/mudstone in the Eumeralla Formation of Australia. It is the type species of Leaellynasaura.
Synonymy list
| Year | Name and author |
|---|---|
| 1989 | Leaellynasaura amicagraphica Galton p. 218 |
| 1989 | Leaellynasaura amicagraphica Rich and Vickers-Rich p. 20 figs. 1-7 |
| 1990 | Leaellynasaura amicagraphica Sues and Norman p. 500 |
| 1992 | Leaellynasaura amicagraphica Molnar p. 265 |
| 1994 | Leaellynasaura amicagraphica Rich and Vickers-Rich p. 4 |
| 1996 | Leaellynasaura amicagraphica Molnar p. 651 |
| 1996 | Leaellynasaura amicagraphica Rich p. 714 |
| 1997 | Leaellynasaura amicagraphica Sues p. 357 |
| 2002 | Leaellynnasaura amicagraphica Buchholz p. 19 |
| 2004 | Leaellynasaura amicagraphica Norman et al. p. 395 |
| 2006 | Leaellynasaura amicagraphica Scanlon p. 280 |
| 2010 | Leaellynasaura amicagraphica Agnolin et al. pp. 269-270 |
| 2010 | Leaellynasaura amicagraphica Rich et al. p. 385 |
| 2011 | Leaellynasaura amigraphica Romilio and Salisbury p. 140 |
| 2016 | Leaellynasaura amicagraphica Dieudonné et al. p. 66 |
| 2018 | Leaellynasaura amicagraphica Bell et al. p. 2 |
| 2018 | Leaellynasaura amicagraphica Herne et al. p. 2 |
| 2018 | Leaellynasaura amicagraphica Madzia et al. p. 969 |
| 2019 | Leaellynasaura amicagraphica Herne et al. p. 543 |
| 2021 | Leaellynasaura amicagraphica Duncan et al. p. 6 |
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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.
†Leaellynasaura amicagraphica Rich and Vickers-Rich 1989
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. J. Duncan et al. 2021 | Small-bodied neornithischian characterized by the combination of the following features: (1) Maxilla with anteroposteriorly stout, mediolaterally expanded premaxillary process; (2) Maxilla with posterior third out-turned laterally (also seen in large individuals of Galleonosaurus dorisae [Herne et al., 2019]); (3) Maxilla with as many as 15 alveoli, showing broad size disparity between largest and smallest alveolus (i.e., largest alveoli near midpoint of toothrow, smallest at mesial and distal ends); (4) Maxillary tooth crowns with mesially located, v-shaped cingular vertex (Herne et al., 2019); 5, Maxillary tooth crowns with well-developed apicobasal ridges on both labial and lingual surfaces (modified from Rich and Rich, 1989); 6, Maxillary tooth crowns with large labial secondary ridges that are similar in prominence to the primary ridge (modified from Rich and Rich, 1989); 7, Maxillary tooth crowns with only one labial secondary ridge distal to the primary ridge (contrasting with similarly sized Galleonosaurus dorisae [two secondary ridges] and Atlascopcosaurus loadsi [five] exemplars [modified from Herne et al., 2019]); 8, Maxillary teeth with three labial secondary ridges mesial to primary ridge (contrasting with similarly sized Galleonosaurus dorisae [four secondary ridges] and Atlascopcosaurus loadsi [six] exemplars [modified from Herne et al., 2019]). |
Measurements
No measurements are available
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| Source: g = genus, subo = suborder, o = order | |||||
| References: Benton 1983, Marsh 1875, Peczkis 1995 | |||||
Age range: Early/Lower Albian or 112.03000 to 109.00000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Aptian - Early/Lower Albian | Australia (Victoria) | Leaellynasaura amicagraphica (118946) | |
| Early/Lower Albian | Australia (Victoria) | Hypsilophodontidae indet. A (38534 38537 type locality: 38542) |