YPM 2, Split Tank, Glass Mountains (Permian of the United States)

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

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: slope; lithified limestone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: chemical,

Primary reference: E. L. Yochelson. 1956. Permian Gastropoda of the southwestern United States. 1. Euomphalacea, Trochonematacea, Pesudophoracea, Anomphalacea, Craspedostomatacea, and Platyceratacea. Bulletin of the American Museum of Natural History 110(3):173-276 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 110512: authorized by Matthew Clapham, entered by Matthew Clapham on 09.06.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cyrtoneritida - Orthonychiidae
"Platyceras (Orthonychia) sp." = Orthonychia
"Platyceras (Orthonychia) sp." = Orthonychia Hall 1843 snail
 Neritoina - Neritopsidae
Byzantia obliqua n. gen. Kosnik 1997 snail
 Trochoidea - Liotiidae
Brochidium morrisi Yochelson 1956 snail
Dichostasia complex Yochelson 1956 snail
 Euomphalina - Omphalotrochidae
Babylonites turritus Yochelson 1956 snail