USNM708u, Split Tank, Glass Mountains (Permian of the United States)

Where: Brewster County, Texas (30.4° N, 103.1° W: paleocoordinates 1.1° N, 33.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Cathedral Mountain Formation, Kungurian (279.3 - 272.3 Ma)

• Loose pieces on S side of gully, under Institella zone and above basal quartz pebble conglomerate. Although all of the pieces comprising this locality were loose, they were taken together and are regarded as in place; however, no other pieces like them have since been found.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; limestone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, surface (float), chemical,

Primary reference: G. A. Cooper and R. E. Grant. 1972. Permian brachiopods of west Texas, I. Smithsonian Contributions to Paleobiology 14:1-231 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 43589: authorized by David Bottjer, entered by Matthew Clapham on 15.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• A variety of papers list the brachiopods, nearly all gastropods, most bivalves (except primarily Paleotaxodonts), trilobites, chitons, siliceous sponges, rugose corals (only from Gaptank and Asselian/Sakmarian formations).
Trilobita
 Proetida - Phillipsiidae
Anisopyge perannulata3 Shumard 1858 trilobite
Delaria brevis3 Brezinski 1992 trilobite
Craniata
 Craniida - Craniidae
Petrocrania sp.4 Raymond 1910
Strophomenata
 Strophomenida - Rugosochonetidae
Dyoros (Tetragonetes) giganteus4 Cooper and Grant 1975
Dyoros (Lissosia) vagabundus4 Cooper and Grant 1975
 Productida - Lyttoniidae
Choanodus perfectus4 Cooper and Grant 1974
 Orthotetida - Schuchertellidae
Goniarina "sp. 1"4 Cooper and Grant 1969
 Orthotetida - Meekellidae
Niviconia globosa n. gen.4 King 1931
Rhynchonellata
 Spiriferida - Martiniidae
Martinia miranda4 Cooper and Grant 1976
Rallacosta laminata4 Cooper and Grant 1976
 Spiriferida - Trigonotretidae
Lepidospirifer demissus4 Cooper and Grant 1976
 Spiriferida - Paeckelmanellidae
Scenesia extensa4 Cooper and Grant 1976
 Spiriferida - Elythidae
"Neophricadothyris bullata" = Permophricodothyris bullata4
"Neophricadothyris bullata" = Permophricodothyris bullata4 Cooper and Grant 1976
 Spiriferinida - Spiriferellinidae
Metriolepis tegulata4 Cooper and Grant 1976
 Athyridida - Neoretziidae
Hustedia sp.4 Hall and Clarke 1893
Hustedia stataria4 Cooper and Grant 1976
Hustedia trisecta4 Cooper and Grant 1976
Thedusia discissa4 Cooper and Grant 1976
 Athyridida - Athyrididae
Composita sp.4 Brown 1849
 Athyridida - Nucleospiridae
Nucleospira cunctata4 Cooper and Grant 1976
 Rhynchonellida - Stenoscismatidae
Stenoscisma fabarium4 Cooper and Grant 1976
Stenoscisma triquetrum4 Cooper and Grant 1976
 Rhynchonellida - Amphipellidae
Amphipella arcaria4 Cooper and Grant 1969
 Rhynchonellida - Wellerellidae
Cenorhynchia sp.4 Cooper and Grant 1976
Phrenophoria nesiotes4 Cooper and Grant 1976
 Rhynchonellida - Petasmatheridae
Ptygmactrum angulatum4 Cooper and Grant 1976
Elassonia scitula4 Cooper and Grant 1976
 Terebratulida - Notothyrididae
Glossothyropsis immatura4 Cooper and Grant 1976
Bivalvia
 Pectinida - Streblochondriidae
Streblopteria montpelierensis6 Girty 1910 scallop
Gastropoda
 Murchisoniina - Porcelliidae
Hesperiella permianus2 Batten 1989 snail
 Murchisoniina - Phymatopleuridae
Tapinotomaria mirabilis1 Batten 1958 snail
 Murchisoniina - Gosseletinidae
Peruvispira delicata2 Chronic 1949 snail
Apachella exaggerata2 Batten 1989 snail
Apachella turbiniformis2 Winters 1963 snail
Echinoidea
 Cidaroida -
Cidaroida indet.5 Claus 1880 pencil urchin