Where: Noble County, Oklahoma (36.3° N, 97.4° W: paleocoordinates 3.6° N, 26.2° W)
• coordinate estimated from map
When: Wellington Formation (Sumner Group), Leonardian (286.0 - 273.0 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: lacustrine; red sandstone and lenticular, silty, sandy shale
• "These [...] beds [...] appear to have originated in a lake, very near to shore."
• "[...] red sandstone, bed 19 of the section. [...] small lenses that lie just under the red sandstone, in bed 18 of the section. These lenses [...] run from two to five feet in diameter, and are roughly ovoid in shape. The rock is a heterogeneous mixture of sandy shale, shale, sandstone, and masses of mud which are rich in organic remains. [...] The bed below the sandstone, of which these lenses make up the topmost part, is predominantly a dark, red to brown, sandy shale. In its upper part it also carries some lenses of very fine, chocolate colored sandy shale, with very fine sand and some mica."
Size class: macrofossils
Collected by E. C. Olson
Primary reference: E. C. Olson. 1970. New and little known genera and species of vertebrates from the Lower Permian of Oklahoma. Fieldiana: Geology 18(3):359-434 [J. Mueller/J. Dummasch/T. Liebrecht]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 84941: authorized by Johannes Mueller, entered by Torsten Liebrecht on 18.11.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
• "Tooth plates, listed as Sphaerolepis arcata in Olson (1967), are a common associate of Platysomus and occur rather widely in both beds 18 and 19. It seems quite possible that these actually represent tooth plates of Platysomus."
•Besides the taxa listed, "indeterminate remains of a small amphibian" are present.
Show authors, comments, and common names
| Amphibia |
| Temnospondyli - Trimerorhachidae |
|
| Reptilia |
| Araeosceloidea - |
|
| Osteichthyes |
| Synapsida - Sphenacodontidae |
|
| Synapsida - Ophiacodontidae |
|
| Dipnoi - Gnathorhizidae |
|
| Palaeonisciformes - Platysomidae |
|
| Chondrichthyes |
| Xenacanthiformes - Xenacanthidae |
|
| Ctenacanthiformes - Ctenacanthidae |
|
| Branchiopoda |
| Diplostraca - |
|