USNM735a, Old Word Ranch, Glass Mountains (Permian of the United States)

Where: Texas (30.4° N, 103.1° W: paleocoordinates 1.4° N, 33.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Road Canyon Formation, Roadian (272.3 - 268.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: slope; lithified limestone

Size class: macrofossils

Preservation: replaced with silica

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 101808: authorized by Matthew Clapham, entered by Matthew Clapham on 03.01.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Productida - Echinoconchidae
Waagenoconcha platys2 Cooper and Grant 1975
 Productida - Productellidae
Rugatia mckeei2 Cooper and Grant 1975
Echinauris sp.2 Muir-Wood and Cooper 1960
 Productida - Productidae
"Horridonia texana" = Sowburia texana2
"Horridonia texana" = Sowburia texana2 King 1931
 Productida - Linoproductidae
Megousia auriculata2 Muir-Wood and Cooper 1960
 Productida - Rugosochonetidae
Dyoros (Dyoros) transversus2 Cooper and Grant 1975
 Orthotetida - Derbyiidae
Derbyia sp.2 Waagen 1884
Rhynchonellata
 Athyridida - Neoretziidae
Hustedia cuneata2 Cooper and Grant 1976
Thedusia mesocostata2 Cooper and Grant 1976
 Spiriferida - Trigonotretidae
Neospirifer bakeri2 King 1931
ssp. bakeri
 Rhynchonellida - Petasmatheridae
Ptygmactrum mordicum2 Cooper and Grant 1976
Bivalvia
 Pectinida - Euchondriidae
Euchondria cooperi3 Newell and Boyd 1995 scallop
 Pectinida - Aviculopectinidae
"Aviculopecten americanus" = Hayasakapecten americanus3
"Aviculopecten americanus" = Hayasakapecten americanus3 Newell and Boyd 1995 scallop
 Pectinida - Deltopectinidae
Streblopteria montpelierensis3 Girty 1910 scallop
Gastropoda
 Murchisoniina - Gosseletinidae
Ananias labrectus1 Batten 1989 snail
Polyplacophora
 Neoloricata - Lepidopleuridae
"Pterochiton arthurcooperi" = Schematochiton arthurcooperi4
"Pterochiton arthurcooperi" = Schematochiton arthurcooperi4 Smith 1976 chiton