USNM720d, Gilliland Canyon, Glass Mountains (Permian of the United States)

Where: Texas (30.4° N, 103.3° W: paleocoordinates 1.4° N, 33.3° W)

• coordinate based on nearby landmark

• outcrop-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: D. K. Brezinski. 1992. Permian trilobites from west Texas. Journal of Paleontology 66(6):924-943 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 102610: authorized by Matthew Clapham, entered by Matthew Clapham on 17.01.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Polyplacophora
 Neoloricata - Lepidopleuridae
"Pterochiton arthurcooperi" = Schematochiton arthurcooperi4
"Pterochiton arthurcooperi" = Schematochiton arthurcooperi4 Smith 1976 chiton
Cephalopoda
 Goniatitida - Paragastrioceratidae
? Pseudogastrioceras sp.1
? Pseudogastrioceras sp.1 Spath 1936 ammonite
 Goniatitida - Adrianitidae
? Neocrimites sp.1
? Neocrimites sp.1 Ruzhentsev 1940 ammonite
 Goniatitida - Agathiceratidae
Agathiceras sp.1
Agathiceras sp.1 Gemmellaro 1887 ammonite
Bivalvia
 Pectinida - Heteropectinidae
Girtypecten sublaqueatus3
Girtypecten sublaqueatus3 Girty 1908 scallop
 Pectinida - Streblochondriidae
Eocamptonectes papillatus3
Eocamptonectes papillatus3 Girty 1908 scallop
 Pectinida - Euchondriidae
Euchondria sp.2
Euchondria sp.2 Meek 1874 scallop
 Pectinida - Entoliidae
Pernopecten yini3
Pernopecten yini3 Newell and Boyd 1995 scallop
Craniata
 Craniida - Craniidae
Lepidocrania tardispinosa1, Acanthocrania densispina1
Lepidocrania tardispinosa1 Cooper and Grant 1974
Acanthocrania densispina1 Cooper and Grant 1974
Rhynchonellata
 Rhynchonellida - Petasmariidae
Leiorhynchoidea sp.1
Leiorhynchoidea sp.1 Cloud 1944
 Rhynchonellida - Rhynchoporidae
Rhynchopora hebetata1
Rhynchopora hebetata1 Cooper and Grant 1976
 Rhynchonellida - Stenoscismatidae
Stenoscisma sp.1, Stenoscisma bonum1
Stenoscisma sp.1 Conrad 1839
Stenoscisma bonum1 Cooper and Grant 1976
 Rhynchonellida - Pontisiidae
Pontisia stehlii1
Pontisia stehlii1 Cooper and Grant 1969
ssp. stehlii
 Rhynchonellida - Petasmatheridae
Elassonia micraria1, Petasmatherus nitidus1, Ptygmactrum acutum1
Elassonia micraria1 Cooper and Grant 1976
Petasmatherus nitidus1 Cooper and Grant 1976
Ptygmactrum acutum1 Cooper and Grant 1976
 Spiriferida - Elythidae
Neophricadothyris crassibecca1
Neophricadothyris crassibecca1 Cooper and Grant 1976
 Spiriferida - Trigonotretidae
Cartorhium sp.1, Neospirifer formulosus1, Neospirifer bakeri1
Cartorhium sp.1 Cooper and Grant 1976
Neospirifer formulosus1 Cooper and Grant 1976
Neospirifer bakeri1 King 1931
ssp. bakeri
 Spiriferida - Strophopleuridae
Spiriferinaella sp.1
 Athyridida - Athyrididae
Composita sp.1, Composita pilula1, Composita cracens1
Composita sp.1 Brown 1849
Composita pilula1 Cooper and Grant 1976
Composita cracens1 Cooper and Grant 1976
 Athyridida - Neoretziidae
Hustedia consuta1, Thedusia mesocostata1
Hustedia consuta1 Cooper and Grant 1976
Thedusia mesocostata1 Cooper and Grant 1976
 Spiriferinida - Spiriferellinidae
Metriolepis ziczac1
Metriolepis ziczac1 Cooper and Grant 1976
 Spiriferinida - Reticulariinidae
Altiplecus "sp. 2"1
Altiplecus "sp. 2"1 Stehli 1954
 Spiriferinida - Paraspiriferinidae
Paraspiriferina pulchra1, Paraspiriferina cellulana1
Paraspiriferina pulchra1 Cooper and Grant 1976
Paraspiriferina cellulana1 Cooper and Grant 1976
 Orthida - Enteletidae
Enteletes subnudus1
Enteletes subnudus1 Cooper and Grant 1976
 Orthida - Schizophoriidae
Acosarina mesoplatys1
 Terebratulida - Gillediidae
Lowenstamia sp.1
Lowenstamia sp.1 Stehli 1961
 Terebratulida - Dielasmatidae
Dielasma sp.1, Dielasma bellulum1
Dielasma sp.1 King 1856
Dielasma bellulum1 Cooper and Grant 1976
 Terebratulida - Notothyrididae
Notothyris gillilandensis1
Notothyris gillilandensis1 Cooper and Grant 1976
 Terebratulida - Cryptonellidae
Heterelasma sp.1, Heterelasma glansfagea1, Texarina wordensis1
Heterelasma sp.1 Girty 1908
Heterelasma glansfagea1 Cooper and Grant 1976
Texarina wordensis1 King 1931
Strophomenata
 Strophomenida - Rugosochonetidae
Micraphelia sp.1, Chonetinetes angustisulcatus1, Dyoros (Dyoros) transversus1, Dyoros (Dyoros) extensiformis1, Dyoros (Dyoros) angulatus1, Dyoros (Tetragonetes) rectangulatus1, Dyoros (Lissosia) parvus1
Micraphelia sp.1 Cooper and Grant 1969
Chonetinetes angustisulcatus1 Cooper and Grant 1975
Dyoros (Dyoros) transversus1 Cooper and Grant 1975
Dyoros (Dyoros) extensiformis1 Cooper and Grant 1975
Dyoros (Dyoros) angulatus1 Cooper and Grant 1975
Dyoros (Tetragonetes) rectangulatus1 Cooper and Grant 1975
Dyoros (Lissosia) parvus1 Cooper and Grant 1975
 Productida - Cyclacanthariidae
Cyclacantharia transitoria1
Cyclacantharia transitoria1 Cooper and Grant 1975
 Productida - Lyttoniidae
Collemataria sp.1, Petasmaia "sp. 1"1, Coscinophora magnifica1
Collemataria sp.1 Cooper and Grant 1974
Petasmaia "sp. 1"1 Cooper and Grant 1969
Coscinophora magnifica1 Cooper and Grant 1974
 Productida - Paucispiniferidae
Paucispinifera sulcata1, Paucispinifera costellata1
Paucispinifera sulcata1 Cooper and Grant 1975
Paucispinifera costellata1 Cooper and Grant 1975
 Productida -
Rhytisia rugosa1, Simplicarina incompta1
Rhytisia rugosa1 Cooper and Grant 1975
Simplicarina incompta1 Cooper and Grant 1975
 Productida - Productellidae
Echinauris sp.1, Echinauris lappacea1, Echinauris bella1
Echinauris sp.1 Muir-Wood and Cooper 1960
Echinauris lappacea1 Cooper and Grant 1975
Echinauris bella1 Cooper and Grant 1975
 Productida - Productidae
Peniculauris costata1
Peniculauris costata1 Cooper and Grant 1975
 Productida - Echinoconchidae
Waagenoconcha convexa1
Waagenoconcha convexa1 Cooper and Grant 1975
 Productida - Monticuliferidae
Compressoproductus sp.1
Compressoproductus sp.1 Sarytcheva 1960
 Productida - Linoproductidae
Megousia auriculata1, Holotricharina sparsa1
Megousia auriculata1 Muir-Wood and Cooper 1960
Holotricharina sparsa1 Cooper and Grant 1975
 Productida - Aulostegidae
Cactosteges anomalus1, Rhamnaria sp.1, Rhamnaria tenuispinosa1, Rhamnaria vinnula1, Echinosteges tuberculatus1, Edriosteges multispinosus1, Xenosteges trivialis1
Cactosteges anomalus1 Cooper and Grant 1975
Rhamnaria sp.1 Muir-Wood and Cooper 1960
Rhamnaria tenuispinosa1 Cooper and Grant 1975
Rhamnaria vinnula1 Cooper and Grant 1975
Edriosteges multispinosus1 Muir-Wood and Cooper 1960
Xenosteges trivialis1 Cooper and Grant 1975
 Productida - Cooperinidae
Cooperina subcuneata1
Cooperina subcuneata1 Cooper and Grant 1975
 Orthotetida - Derbyiidae
Derbyia sp.1, Derbyia cincinnata1, Derbyia laqueata1
Derbyia sp.1 Waagen 1884
Derbyia cincinnata1 Cooper and Grant 1974
Derbyia laqueata1 Cooper and Grant 1974
 Orthotetida - Schuchertellidae
Bothrostegium derbyoideum1, Tropidelasma corniculum1, Goniarina sp.1, Goniarina striata1
Bothrostegium derbyoideum1 Cooper and Grant 1974
Tropidelasma corniculum1 Cooper and Grant 1974
Goniarina sp.1 Cooper and Grant 1969
Goniarina striata1 Cooper and Grant 1974
 Orthotetida - Meekellidae
Ombonia invecta1, Geyerella inexpectata1, Meekella sp.1, Meekella calathica1
Ombonia invecta1 Cooper and Grant 1974
Geyerella inexpectata1 Cooper and Grant 1974
Meekella calathica1 Cooper and Grant 1974
Trilobita
 Proetida - Phillipsiidae
Anisopyge perannulata, Delaria antiqua, Delaria granti
Anisopyge perannulata Shumard 1858 trilobite
Delaria antiqua Girty 1908 trilobite
Delaria granti Brezinski 1992 trilobite
1Cooper and Grant 1977; 2Newell and Boyd 1985; 3Newell and Boyd 1995; 4Smith 1976