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Camposaurus arizonensis
Taxonomy
Camposaurus arizonensis was named by Hunt et al. (1998). Its type specimen is UCMP 34498, a set of postcrania, and it is a 3D body fossil. Its type locality is Placerias Quarry, UCMP A269, which is in a Norian wet floodplain mudstone/claystone in the Chinle Formation of Arizona. It is the type species of Camposaurus.
It was considered a nomen dubium by Parker (2005) and Irmis (2005); it was considered a nomen dubium by Nesbitt et al. (2007).
It was considered a nomen dubium by Parker (2005) and Irmis (2005); it was considered a nomen dubium by Nesbitt et al. (2007).
Synonymy list
Year | Name and author |
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1998 | Camposaurus arizonensis Hunt et al. p. 515 fig. 2 |
2004 | Camposaurus arizonensis Tykoski and Rowe p. 48 |
2007 | Camposaurus arizonensis Spielmann et al. p. 385 |
2011 | Camposaurus arizonensis Ezcurra and Brusatte p. 764 |
2015 | Camposaurus arizonensis Nesbitt and Ezcurra p. 514 |
2016 | Camposaurus arizonensis Martill et al. p. 10 |
2016 | Camposaurus arizonensis Martínez et al. p. 63 |
2017 | Camposaurus arizonensis Ezcurra p. 518 |
2017 | Camposaurus arizonensis Martinez and Apaldetti p. 501 |
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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.
†Camposaurus arizonensis Hunt et al. 1998
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Diagnosis
Reference | Diagnosis | |
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A. P. Hunt et al. 1998 | As for genus. | |
M. D. Ezcurra and S. L. Brusatte 2011 | Camposaurus arizonensis is a basal neotheropod dinosaur distinguished from other dinosauriforms by the following combination of apomorphies (autapomorphies with asterisk): the posterior edge of the tibial articular surface for the fibula is prominent and takes the form of a sharp longitudial ridge* and a strongly developed, anteriorly bowed, diagonal tuberosity on its medial surface; and astragalus without a strong anterior projection of the medial condyle of the astragalar body* (convergently acquired by the nondinosaur dinosauromorph Silesaurus), resulting in a sub-rectangular astragalar body in distal view and a ventral margin incipiently concave in anterior view. |