Also known as 1988-1
Where: Chesterfield County, Virginia (37.5° N, 77.7° W: paleocoordinates 2.4° N, 16.1° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Tomahawk Creek Member (Vinita Formation), Carnian (237.0 - 228.0 Ma)
• "Based on conchostracans, Kozur & Weems (2007) recently dated much of the succession in the Richmond Basin and correlative units in the adjacent Taylorsville basin as early Carnian (Cordevolian), but earlier Huber et al. (1993) had argued for a late Carnian age of these strata. At the present time this controversy cannot be resolved" (Sues & Hopson 2010)
•"Turkey Branch Formation" was previously used for this locality; Richmond Basin, Newark Supergroup
• bed-level stratigraphic resolution
Environment/lithology: lacustrine - small; silty, calcareous mudstone
Size classes: macrofossils, mesofossils, microfossils
Collected by Olsen, Sues in 1983, 1988-1992; reposited in the USNM
Collection methods: bulk, surface (float), surface (in situ), chemical, mechanical, sieve,
Primary reference: P. E. Olsen. 1989. Stop 3.2: Tomahawk tetrapod quarry. In P. E. Olsen, R. W. Schlische, & P. J. W. Gore (eds.), Tectonic, Depositional, and Paleoecological History of Early Mesozoic Rift Basins, Eastern North America. Gulf, North Carolina, USA to Parrsboro, Nova Scotia, Canada. July 20–30, 1989. International Geological Congress Field Trip T-351 54-55 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 39159: authorized by Matthew Carrano, entered by Matthew Carrano on 21.05.2004, edited by Patricia Holroyd and Bryan Gee
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Pteridophyta indet.6 Haeckel 1875 | |
Osteichthyes | |
Dictyopyge macrurus Redfield 1841 | |
Reptilia | |
Vinitasaura lizae n. gen. n. sp.3
Vinitasaura lizae n. gen. n. sp.3 Sues and Kligman 2021 crown diapsid USNM PAL 770100 (holotype), partial left dentary; USNM PAL 770100 (partial left dentary)
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Uatchitodon kroehleri n. gen. n. sp.6
Uatchitodon kroehleri n. gen. n. sp.6 Sues 1991 archosauromorph USNM 448611 (holotype). USNM 448603-448, 610, 448621-448622, 448624, teeth
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Euscolosuchus olseni n. gen. n. sp.2
Euscolosuchus olseni n. gen. n. sp.2 Sues 1992 archosauromorph USNM 448587, associated osteoderms (holotype). USNM 448580-448586, 448588, 448589
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Xenodiphyodon petraios n. gen. n. sp.5
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Gomphiosauridion baileyae n. gen. n. sp.5
Gomphiosauridion baileyae n. gen. n. sp.5 Sues and Olsen 1993 parareptile USNM 448630, partial maxilla
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Osteichthyes | |
Boreogomphodon jeffersoni n. gen. n. sp.4 Sues and Olsen 1990 cynodont USNM 437632, left maxilla (holotype). CM 20050, 76800, 76801, 78803, USNM 437634, 437635, 437636, 448562, 448570, 448593, 448599, 448632, 448633, VMNH 3575, 3578, cranial remains. CM 76805, 76807, 76808, 76812, 76815, 76818, USNM 448563-448569, 448571-448573, 448575, 448576, 448578, 448597, 448601, 448625, 448629, isolated teeth. USNM 448602, 448598, VMNH 3577, postcranial elements
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Amphibia | |
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Chondrichthyes | |
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Gastropoda | |
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Branchiopoda | |
Cyzicus sp. Audouin 1837 clam shrimp | |
Ostracoda | |
Darwinula sp. Brady and Robertson 1885 ostracod |