The first articulated skeleton referred to "P. kirkpatricki" (CM 73372) was recovered by David S. Berman of the Carnegie Museum of Natural History, in Coelophysis Quarry at Ghost Ranch, New Mexico, between 1988 and 1989. This specimen was composed of a well-preserved skeleton without skull and was described by Long and Murry in 1995, Weinbaum in 2002 and Novak in 2004. The specimen represents a skeletally immature individual because none of the neural sutures are closed. It was referred to "P. kirkpatricki" by Long and Murry (1995) without specific justification, and more recent studies accepted this referral. Nevertheless, Nesbitt (2011) noted that these studies failed to note any synapomorphies unique to "P. kirkpatricki" and CM 73372. Weinbaum (2002) and Novak (2004) even noted that the preacetabular process of the ilium in CM 73372 was much longer than that of "P. kirkpatricki". Nesbitt (2011) also noted that CM 73372 differs from "P. kirkpatricki" and "Rauisuchus" in possessing a concave ventral margin of the ilium, and from "P. alisonae" in processing an asymmetrical distal end of the fourth metatarsal. Nesbitt (2011) couldn't differentiate CM 73372 and "Polonosuchus" as they overlap only in the caudal vertebrae. A phylogenetic analysis conducted by Nesbitt (2011), one of the most extensive on archosaurs, found CM 73372 to be the most basal crocodylomorph, thus referable neither to "P. kirkpatricki" nor to Rauisuchidae.