Where: Oklahoma (36.1° N, 96.0° W: paleocoordinates 4.4° S, 30.3° W)
• coordinate based on nearby landmark
When: Tackett Member (Coffeyville Formation), Kasimovian (307.0 - 303.7 Ma)
Environment/lithology: marine; lithified, concretionary, phosphatic shale
Size class: macrofossils
Preservation: concretion
Collected by Royal Mapes; reposited in the AMNH
Primary reference: A. Pradel, M. Langer, J. G. Maisey, D. Geffard-Kuriyama, P. Cloetens, P. Janvier, and P. Tafforeau. 2009. Skull and brain of a 300-million-year-old chimaeroid fish revealed by synchrotron holotomography. Proceedings of the National Academy of Sciences 106:5224-5228 [M. Clapham/M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 130894: authorized by Matthew Clapham, entered by Matthew Clapham on 16.07.2012, edited by Joseph Flannery-Sutherland
Creative Commons license: CC BY (attribution)
Taxonomic list
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Lawrenciella sp.1 Poplin 1984 AMNH FF 20852. This specimen is very similar to slightly younger isolated braincases belonging to Lawrenciella schaefferi Poplin, 1984 (Poplin 1984; Hamel & Poplin 2008) from the late Virgilian (Upper Pennsylvanian) of Kansas, USA. However, it possesses distinct paired intercalar bones arising from the cranio-spinal process and bridging the otico-occipital fissure, as in the Mesozoic caturids, pholidophoris, leptolepids, Amia Linnaeus, 1766 and modern teleosts (Schaeffer 1971; Patterson 1975) that were not previously documented in any “palaeonisciform”
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