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Arenicolites is a U-shaped ichnotaxon[1] dating from Ediacaran times onwards in South Australia. The trace shown by this fossil, is a pair of closely spaced circles on a bedding plane. In vertical section the traces are U- or J-shaped. They appear to be burrows made by a kind of worm.

References[]

  1. ^ Gevers, T.W.; Frakes, L.A.; Edwards, L.N.; Marzolf, J.E. (1971). "Trace Fossils in the Lower Beacon Sediments (Devonian), Darwin Mountains, Southern Victoria Land, Antarctica". Journal of Paleontology 45 (1): 81–94. http://links.jstor.org/sici?sici=0022-3360(197101)45%3A1%3C81%3ATFITLB%3E2.0.CO%3B2-J. Retrieved on 2008-04-21. 
Dinosaur State Park (Rocky Hill, CT) - close-up