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Choyrodon barsboldi
Taxonomy
Choyrodon barsboldi was named by Gates et al. (2018). Its type specimen is MPC-D 100/801, a partial skull, and it is a 3D body fossil. Its type locality is Khuren Dukh I [HMNS-GIN], which is in an Albian/Albian lacustrine sandstone/siltstone in the Khuren Dukh Formation of Mongolia. It is the type species of Choyrodon.
Synonymy list
| Year | Name and author |
|---|---|
| 2018 | Choyrodon barsboldi Gates et al. p. 2 |
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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.
†Choyrodon barsboldi Gates et al. 2018
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. A. Gates et al. 2018 | Iguanodontian ornithopod distinguished by the following autapomorphies (marked with an asterisk) and unique combination of characters: anterodorsal process of maxilla dorsoventrally broad relative to total height of maxilla, with a length to height ratio of
1 and the dorsal margin of this process reaching and extending along a portion of the ventral bony naris; anterodorsal margin of maxilla horizontal; nasal possessing low rise on dorsal surface positioned at posterior extent of nasal fenestra; expansion of the distal lateral process of premaxilla; dorsoventrally thickened bone on posterior surface of nasal below dorsal rise; elongate, hypertrophied external narial fenestra with nasals comprising a small portion of posteroventral margin; antorbital fenestra; lacrimal bearing rounded anterior margin and lobate shape in lateral view; squamosal processes of postorbital deflected posterodorsally; quadrate notch located at midheight of element; posterior process of opisthotic? wraps over to contact broadly the posterior face of supraoccipitals; predentary with flattened articulation surface across entire ventral margin; predentary with series of paired foramina below oral margin throughout lateral length of element; distal end of dentary deflected ventrally; surangular displays two deep osteological folds on the lateral surface ventral to second foramen; prepubic process of pubis deflects ventrally. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Marsh 1875, Benton 1983, Kiessling 2004 | |||||
Age range: base of the Middle Albian to the top of the Late/Upper Albian or 110.10000 to 100.50000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Albian - Late/Upper Albian | Mongolia (Dornogov) | Iguanodontia indet. (type locality: 55252 55328) |