New Mexico Geological Society Annual Spring Meeting — Abstracts

The Kinney Brick quarry is a lagerstatte developed in the Pennsylvanian Pine Shadow Member of the Wild Cow Formation located in the Manzanita Mountains near Albuquerque, NM. The fish fauna consists of 4 species and 6 undescribed morphotypes of Actinopterygii, 1 species of Acanthodii, 6 species of Chondrichthyes, and 2 species of Sarcopterygii. The actinopterygian fish encompass the largest number of species in the quarry. There are four described species: Platysomus schultzei, Amphicentrumjurgenai, Pyritocephalus lowneyae, and Schizolepis manzanitaensis. The remaining paleoniscoids can be divided into six morphotypes. P. schultzei is the most abundant species in the quarry. These fish were autochthonous to the lagoon. They were euryhaline and were feeding on crustaceans. The remaining actinopterygian fish are represented by high diversity and relatively low abundance. P. schultzei outnumbers the rest of the species and morphotypes of actinopterygian fishes from 6:1 to 30:1. Little is known about the phylogenetic relationships and ecology of these paleoniscoid fishes. The acanthodians are represented by one species, Acanthodes kinneyi. It is as abundant as P. schultzei. These fish were autochthonous to the lagoon. The acanthodians were euryhaline and piscivorous. The Chondrichthyians are represented by high diversity and very low abundance. The chondrichthyan taxa are: Orthocanthus huberi, Cobelodus aculeatus, Symmorium reniforme, Peripristis aff. P. semicircularis, Ctenoptychius and Listracanthus. C. aculeatus is known from two skeletons. The remaining chondrichthyans are known from isolated teeth, spines and braincases. The Chondrichthyes, with the exception of O. huberi , were allochthonous and of marine origin. O. huberi, a xenacanth shark, was allochthonous from the fluvial source of the lagoon. The sarcopterygians are represented by an inderterninate coelacanth species and Proceratodus hlavini. The dipnoan P. hlavini, is represented by an isolated tooth plate that washed in from the fluvial source of the lagoon. The coelacanths are moderately abundant. They originated in the fluvial source of the lagoon.