Lueders Fm. Locality 2 (Permian to of the United States)

Also known as Lake Kemp dam

Where: Baylor County, Texas (33.8° N, 99.1° W: paleocoordinates 1.5° N, 29.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Maybelle limestone Member (Lueders Formation), Artinskian to Artinskian (290.1 - 272.3 Ma)

• 8 feet below the Aa2 submember of the Maybelle limestone

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; pebbly, gray, argillaceous conglomerate

• "This layer is hesistantly suspected of having been deposited in a near-shore, marine situation"
• "The fossiliferous layer found at site 2 is a gray, clay-pebble conglomerate. The pebbles are generally under 0.5 inch in diameter and are surrounded by a gray argillaceous matrix."

Size classes: macrofossils, mesofossils

Collection methods: surface (in situ), acetic,

Primary reference: D. S. Berman. 1970. Vertebrate Fossils from the Lueders Formation, Lower Permian of North-Central Texas. University of California Publications in Geological Sciences 86:1-61 [J. Mueller/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 85300: authorized by Johannes Mueller, entered by Torsten Liebrecht on 11.12.2008, edited by Emma Dunne

Creative Commons license: CC BY (attribution)

Taxonomic list

• UCLA VP 2030 was originally identified as Captorhinus aguti by Berman (1970), based on Seltin's (1959, Field. Geol.) conclusion that Captorhinus is a monospecific genus. Given that currently there are three recognized species of Captorhinus, the specimen is left without assignment to a species in the taxonomic list.
Show authors, comments, and common names
Coelacanthimorpha
 Diplocercidiformes - Sassenidae
Spermatodus pustulosus
Spermatodus pustulosus Cope 1894 lobe-finned fish
UCLA VP 2023, "plentiful" skull elements, mainly basisphenoids
Osteichthyes
 Dipnoi - Gnathorhizidae
Gnathorhiza sp.
Gnathorhiza sp. Cope 1883 lungfish
UCLA VP 2025, several tooth plates, vomerine teeth and mandibles, amount not specified
 Synapsida - Sphenacodontidae
Dimetrodon sp.
Dimetrodon sp. Cope 1878 synapsid
several neural spines, no specimen number given
 Synapsida - Ophiacodontidae
Ophiacodon cf. major
Ophiacodon cf. major Romer and Price 1940 ophiacodont
UCLA VP 2031, cervical vertebra
 Recumbirostra - Molgophidae
"Lysorophus cf. tricarinatus" = Brachydectes newberryi
"Lysorophus cf. tricarinatus" = Brachydectes newberryi Cope 1868 amniote
UCLA VP 2029, vertebrae, amount not specified
Reptilia
 Eureptilia - Captorhinidae
Captorhinus sp.
Captorhinus sp. Cope 1896 eureptile
UCLA VP 2030, humerus; see comments on taxonomic list
Amphibia
 Nectridea - Diplocaulidae
Diplocaulus sp.
Diplocaulus sp. Cope 1877 tetrapod
UCLA VP 2027, vertebrae and fragments of dermal bone, amount not specified
 Temnospondyli - Trimerorhachidae
Trimerorhachis sp.
Trimerorhachis sp. Cope 1878 tetrapod
UCLA VP 2026, "ubiquitous remains", amount not specified
 Temnospondyli - Dissorophidae
Aspidosaurus binasser n. sp.
Aspidosaurus binasser n. sp. Berman and Lucas 2003 tetrapod
TMM 43531 (Holotype: partial skull (8cm in length) with associated vertebrae and armour)
Osteichthyes
 Aistopoda - Phlegethontiidae
? Phlegethontia sp.
? Phlegethontia sp. Cope 1871 tetrapod
UCLA VP 2028, vertebrae, amount not specified
 Palaeoniscoidea -
Palaeoniscoidea indet.
Palaeoniscoidea indet.
many thousand scales per pound of rock
Chondrichthyes
 Orodontiformes - Orodontidae
Orodus sp.
Orodus sp. Agassiz 1836 chimaera
UCLA VP 2016, teeth, amount not specified
 Petalodontiformes - Belantseidae
Ctenoptychius sp.
Ctenoptychius sp. Agassiz 1838 chimaera
UCLA VP 2021, teeth, amount not specified
 Petalodontiformes - Janassidae
Janassa sp.
Janassa sp. chimaera
UCLA VP 2020, teeth, amount not specified
 Hybodontiformes - Hybodontidae
Hybodus cf. copei
Hybodus cf. copei Hay 1899 elasmobranch
UCLA VP 2014, spines, amount not specified
 Bransonelliformes -
"Xenacanthus luedersensis" = Barbclabornia luedersensis
"Xenacanthus luedersensis" = Barbclabornia luedersensis Berman 1970 elasmobranch
UCLA VP 2019, teeth, amount not specified
 Xenacanthiformes - Xenacanthidae
Xenacanthus texensis, Xenacanthus platypternus
Xenacanthus texensis elasmobranch
UCLA VP 2017, teeth, amount not specified
Xenacanthus platypternus elasmobranch
UCLA VP 2018, teeth, amount not specified