Cow Branch Formation

The Cow Branch Formation is a Late Triassic (Carnian to Norian, or Tuvalian in the regional stratigraphy) geologic formation in the eastern United States.[1] Indeterminate fossil ornithischian tracks have been reported from the formation.[2]

Cow Branch Formation
Stratigraphic range: Carnian-Norian (Tuvalian)
~235–210 Ma
TypeGeological formation
Unit ofDan River Group
Location
Coordinates36.4°N 80.0°W / 36.4; -80.0
Approximate paleocoordinates5.5°N 20.4°W / 5.5; -20.4
RegionVirginia
Country United States
Cow Branch Formation (the United States)
Cow Branch Formation (North Carolina)

Fossil content

The following fossils have been reported from the formation:[1]

Reptiles
Fish
Ichnofossils
Arachnids
  • Argyrarachne solitus[3]
Insects
  • Alinka cara
  • Architipula youngi
  • Brachyrhyphus distortus
  • Cascadelcana virginiana[4]
  • Crosaphis virginiensis
  • Holcoptera solitensis[5]
  • Leehermania prorova
  • Metarchilimonia krzeminskorum
  • M. solita
  • Mormolucoides articulatus[6]
  • Phyloblatta grimaldii
  • Prosechamyia dimedia
  • P. trimedia
  • Pseudopolycentropodes virginicus
  • Triassonepa solensis[7]
  • Triassopsychoda olseni
  • Triassothrips virginicus
  • Veriplecia rugosa
  • Virginiptera certa
  • V. lativentra
  • V. similis
  • Yalea argentata
  • Y. rectimedia
  • Archescytinidae indet.
  • Blattodea indet.
  • Diptera indet.
  • Naucoridae indet.
  • Orthoptera indet.
  • Phoroschizidae indet.
  • Thysanoptera indet.
  • Tipulomorpha indet.
Flora

See also

References
  1. Cow Branch Formation at Fossilworks.org
  2. Weishampel et al., 2004, pp.517-607
  3. Selden et al., 1999
  4. Fang et al., 2018
  5. Kelly et al., 2017
  6. Huber et al., 2003
  7. Criscione & Grimaldi, 2017

Bibliography
  • Fang, Y.; A. D. Muscente; S. W. Heads; B. Wang, and S. H. Xiao. 2018. The earliest Elcanidae (Insecta, Orthoptera) from the Upper Triassic of North America. Journal of Paleontology 92. 1028–1034.
  • Criscione, J., and D. Grimaldi. 2017. The oldest predaceous water bugs (Insecta, Heteroptera, Belostomatidae), with implications for paleolimnology of the Triassic Cow Branch Formation. Journal of Paleontology 91. 1166–1177.
  • Kelly, R. S.; A. J. Ross, and P. Davidson. 2017. Mesozoic Holcoptera (Coleoptera: Coptoclavidae) from England and the United States. Proceedings of the Geologists' Association 128. 659–674.
  • Blagoderov, V. A.; D. A. Grimaldi, and N. C. Fraser. 2007. How time flies for flies: diverse Diptera from the Triassic of Virginia and early radiation of the order. American Museum Novitates 3572. 1–39.
  • Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
  • Huber, P.. 2003. Early Jurassic insects from the Newark Supergroup, northeastern United States. In P. M. LeTourneau, P. E. Olsen (eds.). The Great Rift Valleys of Pangea in Eastern North America 2: Sedimentology, Stratigraphy, and Paleontology. 206–223.
  • Selden, P. A.; J. M. Anderson; H. M. Anderson, and N. C. Fraser. 1999. Fossil araneomorph spiders from the Triassic of South Africa and Virginia. The Journal of Arachnology 27. 401–414.
  • Olsen, P. E. 1979. A new aquatic eosuchian from the Newark Supergroup (Late Triassic–Early Jurassic) of North Carolina and Virginia. Postilla 176. 1–14.
  • Olsen, P. E.; C. L. Remington; B. Cornet, and K. S. Thomson. 1978. Cyclic change in Late Triassic lacustrine communities. Science 201. 729–733.
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