Edited by Mediospirifer
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By Mediospirifer (edited)
Lamp shell
Kingdom: Animalia
Eon: Phanerozoic
Era: Paleozoic
Period: Devonian
Epoch: Middle
International Age: Givetian
Hamilton Group
Moscow Formation
Windom Member
Collector: Mediospirifer
Date Collected: 10/08/2014
Acquired by: Field Collection
Length: 7 mm
Width: 9 mm
Height: 8 mm
Livingston County
New York
United States
Found as surface float on the scree pile at the Windom exposure.
Possible undescribed species of genus Cyrtina. Closely resembles C. hamiltomensis, but surface is smooth and punctate, rather than covered in tiny spicules. Also differs in that extremities are slightly rounded, rather than squared, and height of interarea is equal to the width rather than smaller.
References:
Ehlers, G. M. Cyrtina Hamiltonensis (Hall) And A New Species Of This Brachiopod Genus From New York. Contributions From The Museum Of Paleontology The University Of Michigan Vol. XVIII, No. 12, pp. 197-204 (1963).
Linsley, D. M. Devonian Paleontology of New York. (1994) Paleontological Research Institution Special Publication 21.
Wilson, K. A. Field Guide to the Devonian Fossils of New York. (2014) Paleontological Research Institution Special Publication 44.
Hall, J. Palaeontology of New York v. 4. (1867)
Fossilworks. http://fossilworks.org
Yale Peabody Museum Collections website (http://peabody.yale.edu/collections/invertebrate-paleontology)
Edited by Mediospirifer
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