Also known as Locality 35 (Romer 1928), Cacops bone bed, faunal Zone 4, Lower Clear Fork Group, Texas red-beds, redbeds
Where: Baylor County, Texas (33.8° N, 99.2° W: paleocoordinates 2.3° N, 28.7° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Arroyo Formation (Clear Fork Group), Kungurian (279.3 - 272.3 Ma)
• "The localities are about 100 to 150 feet above the Lueders limestone." Details for Faunal Zone 4 of Romer 1928: "The vertebrate remains are confined to approximately the lowest 250 feet or so of the Clear Fork.."
•the base and top of the Clear Fork Group (i.e., Arroyo, Vale, and Choza formations) are both within the Kungurian: see Wardlaw 2005 (Permophiles) for the base, and DiMichele et al. 2001 (J Paleont) for the top
• group of beds-level stratigraphic resolution
Environment/lithology: terrestrial; red claystone and conglomeratic sandstone
Size class: macrofossils
Collection methods: bulk,
• Chicago University Collections among others.
•Romer (1928) paper is a review of vertebrates from the Texas red-beds with previously unreported (or undetailed) localities. Based on the following statement, "A large proportion of the specimens recorded from here are from the Cacops bone bed" some of the specimens listed by Romer 1928 may be from farther afield than the specific gulley mentioned by Williston.
Primary reference: E. D. Cope. 1896. Second contribution to the history of the Cotylosauria. Proceedings of the American Philosophical Society 35(151):122-139 [J. Mueller/T. Liebrecht/T. Liebrecht]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 28264: authorized by John Alroy, entered by Robin Whatley on 03.02.2003, edited by Torsten Liebrecht and Emma Dunne
Creative Commons license: CC BY (attribution)
Taxonomic list
Osteichthyes | |
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Reptilia | |
Captorhinus sp.1, "Captorhinus aguti" = Captorhinus aguti2, "Pariotichus aduncus n. sp." = Captorhinus aguti, Labidosaurus sp.1, Labidosaurus hamatus6
"Captorhinus aguti" = Captorhinus aguti2 Cope 1882 eureptile CNHM UR 242, UC 951; these specimens were deducted from Romer's (1928) 7 original occurences of "Captorhinus sp."
"Pariotichus aduncus n. sp." = Captorhinus aguti Cope 1882 eureptile AMNH 4332 (type); this specimen is deducted from Romer's (1928) 7 original occurences of "Captorhinus sp."
Labidosaurus hamatus6 Cope 1896 eureptile CNHM UC 174, 176-178, 181, 731; these specimens were deducted from Romer's (1928) 7 original occurences of "Labidosaurus sp."
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Osteichthyes | |
Casea broilii n. gen. n. sp.3
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"Varanosaurus brevirostris n. sp." = Varanops brevirostris5
"Varanosaurus brevirostris n. sp." = Varanops brevirostris5 Williston 1911 synapsid specimen numbers are from Romer 1928
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"Theropleura sp." = Ophiacodon1
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Seymouria baylorensis5 Broili 1904 tetrapod probably specimen FMNH 6183 in Sumida et al. (1992, Phil. Trans. R. Soc. Lond. B)
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Amphibia | |
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Cacops aspidephorus n. sp.4
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"Trimerorhachis conangulus n. sp." = Isodectes obtusus, "Pariotichus megalops n. sp." = Isodectes obtusus1
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Trimerorhachis insignis n. sp.1
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