USNM703d, Road Canyon Formation, Old Word Ranch, Glass Mountains (Permian of the United States)

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

• coordinate estimated from map

• outcrop-level geographic resolution

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

• Lower Road Canyon Formation, just above basal bioherms, nearly at same level as 703c.

• group of beds-level stratigraphic resolution

Environment/lithology: slope; carbonaceous limestone

• Road Canyon Formation records largely slope and basinal deposition.
• Thin-bedded bituminous limestones.

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, 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 43518: authorized by David Bottjer, entered by Matthew Clapham on 14.08.2004

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).
Strophomenata
 Strophomenida - Rugosochonetidae
Dyoros (Dyoros) transversus n. sp.1 Cooper and Grant 1975
Dyoros (Dyoros) angulatus n. sp.1 Cooper and Grant 1975
Dyoros (Dyoros) extensus n. sp.1 Cooper and Grant 1975
Dyoros (Tetragonetes) solidus n. subgen. n. sp.1 Cooper and Grant 1975
Dyoros (Tetragonetes) strigosus n. subgen. n. sp.1 Cooper and Grant 1975
Dyoros (Lissosia) parvus n. subgen. n. sp.1 Cooper and Grant 1975
 Productida - Aulostegidae
Rhamnaria rectangulata1 Cooper and Grant 1975
Rhamnaria tenuispinosa1 Cooper and Grant 1975
Edriosteges multispinosus1 Muir-Wood and Cooper 1960
 Productida - Cyclacanthariidae
Cyclacantharia paucispinosa n. sp.1 Cooper and Grant 1975
 Productida - Lyttoniidae
Eolyttonia chaotica n. sp.1 Cooper and Grant 1974
 Productida - Paucispiniferidae
Paucispinifera sulcata n. sp.1 Cooper and Grant 1975
 Productida - Productellidae
Echinauris sp.1 Muir-Wood and Cooper 1960
Echinauris bella n. sp.1 Cooper and Grant 1975
Echinauris lappacea n. sp.1 Cooper and Grant 1975
Echinauris irregularis n. sp.1 Cooper and Grant 1975
Echinauris liumbona n. sp.1 Cooper and Grant 1975
Rugatia incurvata1 King 1931
Rugatia mckeei1 Cooper and Grant 1975
Spinarella costellata1 Cooper and Grant 1975
"Kutorginella umbonata" = Retaria umbonata1 Muir-Wood and Cooper 1960
 Productida - Productidae
Yakovlevia immatura1 Cooper and Grant 1975
Peniculauris costata n. sp.1 Cooper and Grant 1975
 Productida - Echinoconchidae
Waagenoconcha convexa1 Cooper and Grant 1975
Ametoria residua n. gen. n. sp.1 Cooper and Grant 1975
 Productida - Linoproductidae
Holotricharina hirsuta n. gen. n. sp.1 Cooper and Grant 1975
Megousia auriculata1 Muir-Wood and Cooper 1960
 Orthotetida - Derbyiidae
Derbyia "sp. 2"1 Waagen 1884
Derbyia cincinnata n. sp.1 Cooper and Grant 1974
Derbyia filosa n. sp.1 Cooper and Grant 1974
Derbyia complicata n. sp.1 Cooper and Grant 1974
Derbyia laqueata n. sp.1 Cooper and Grant 1974
Derbyia informis n. sp.1 Cooper and Grant 1974
 Orthotetida - Meekellidae
Meekella calathica n. sp.1 Cooper and Grant 1974
Rhynchonellata
 Spiriferida - Trigonotretidae
Neospirifer bakeri1 King 1931
n. ssp. columbarius
Cartorhium sp. n. gen.1 Cooper and Grant 1976
 Spiriferida - Ambocoeliidae
"Crurithyris minutalis n. sp." = Cruricella minutalis1
"Crurithyris minutalis n. sp." = Cruricella minutalis1 Cooper and Grant 1976
 Spiriferida - Elythidae
"Neophricadothyris cordata n. sp." = Permophricodothyris cordata1
"Neophricadothyris cordata n. sp." = Permophricodothyris cordata1 Cooper and Grant 1976
 Spiriferinida - Spiriferellinidae
Spiriferellina tricosa1 Cooper and Grant 1976
Metriolepis tegulata n. gen. n. sp.1 Cooper and Grant 1976
 Spiriferinida - Reticulariinidae
Reticulariina pristina1 Cooper and Grant 1976
 Athyridida - Neoretziidae
Hustedia sp.1 Hall and Clarke 1893
Hustedia cuneata n. sp.1 Cooper and Grant 1976
Hustedia consuta n. sp.1 Cooper and Grant 1976
Thedusia mesocostata1 Cooper and Grant 1976
 Athyridida - Athyrididae
Composita sp.1 Brown 1849
Composita crassa n. sp.1 Cooper and Grant 1976
 Rhynchonellida - Stenoscismatidae
Stenoscisma camurum1 Cooper and Grant 1976
 Rhynchonellida - Wellerellidae
Cenorhynchia saginata n. gen. n. sp.1 Cooper and Grant 1976
Phrenophoria ventricosa n. sp.1 Cooper and Grant 1976
? Phrenophoria nudumbona n. sp.1 Cooper and Grant 1976
Phrenophoria pentagonalis n. sp.1 Cooper and Grant 1976
 Rhynchonellida - Pontisiidae
Pontisia stehlii1 Cooper and Grant 1969
ssp. stehlii
 Rhynchonellida - Petasmatheridae
Ptygmactrum extensum1 Cooper and Grant 1976
Petasmatherus pumilus n. sp.1 Cooper and Grant 1976
Petasmatherus cf. opulus1 Cooper and Grant 1969
Petasmatherus nitidus n. sp.1 Cooper and Grant 1976
 Rhynchonellida - Allorhynchidae
 Rhynchonellida - Rhynchoporidae
Rhynchopora hebetata1 Cooper and Grant 1976
 Terebratulida - Cryptonellidae
Heterelasma glansfagea n. sp.1 Cooper and Grant 1976
 Terebratulida - Notothyrididae
Glossothyropsis superba n. sp.1 Cooper and Grant 1976
 Terebratulida - Dielasmatidae
Dielasma ellipsoideum n. sp.1 Cooper and Grant 1976
 Orthida - Schizophoriidae
Bivalvia
 Pectinida - Streblochondriidae
Eocamptonectes papillatus4 Girty 1908 scallop
Streblopteria montpelierensis4 Girty 1910 scallop
 Pectinida - Pseudomonotidae
Pseudomonotis (Trematiconcha) likharevi2 Newell and Boyd 1970 scallop
 Trigoniida - Schizodidae
Eoastarte subcircularis3 Ciriacks 1963 clam
Gastropoda
 Euomphalina - Anomphalidae
Diploconula biconvexa5 Yochelson 1956 snail