PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Camposaurus arizonensis

Reptilia - Coelophysidae

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), Irmis (2005); it was considered a nomen dubium by Nesbitt et al. (2007).

Year	Name and author
1998	Camposaurus arizonensis Hunt et al. pp. 515, 530-1 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

Reference	Diagnosis
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.