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Showing results for tags 'kirengella'.
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I'm having difficulty identifying this specimen. I found it in Osagean, probably Visean limestone in Lawrence County, Missouri, associated with various other monoplacophorans, which I believe to be kirengellids or something similar. The last picture is an example of an associated fossil of a similar size, being about 3.2cm from foot to apex. I also found in the same piece of stone a smaller, more rounded specimen, as well as fragments of a third. Stinchcomb and Angeli describe two species that share some characteristics with the fossil in question[1]. Kirengella oregonensis, which is found in cherts from the Roubidoux Formation (Lower Ordovician) in Oregon County, Missouri, is described as "strongly laterally compressed" with "aperture oval" (p. 971). And a new species, Wildernessia inexpecatans, from the same area, is described as having "apical curvature; aperture sub-elliptical forming cone; apex centrally located" (p. 973). Neither of these, of course, is what I have, since I am pretty certain my object came from a nearby quarry and is therefore Visean. But could it be another, later type of Kirengellid? 1. Stinchcomb, B. L., & Angeli, N. A.. (2002). New Cambrian and Lower Ordovician Monoplacophorans from the Ozark Uplift, Missouri. Journal of Paleontology, 76(6), 965–974. Retrieved from http://www.jstor.org/stable/1307116
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- carboniferous
- kirengella
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