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Rediscovery of figured Paleogene echinoid specimens from Clark and Martin (1901)

Published online by Cambridge University Press:  14 July 2015

Louis G. Zachos  and
Daniel Levin
Louis G. Zachos
Affiliation:
Department of Paleobiology MRC-121, National Museum of Natural History, Smithsonian Institution, PO Box 37012, Washington, DC 20013-7012,
Daniel Levin
Affiliation:
Department of Paleobiology MRC-121, National Museum of Natural History, Smithsonian Institution, PO Box 37012, Washington, DC 20013-7012,
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Extract

Clark and Martin (1901), in their study of the Paleogene deposits of Maryland, figured drawings of a fragment of a spatangoid echinoid from the Lower Eocene Nanjemoy Formation and a broken echinoid spine from the Upper Paleocene Aquia Formation. Echinoids are an important element of Paleogene faunas in the eastern United States, but these are the only reported occurrences of this age from either Maryland or Virginia and are therefore significant to the understanding of the evolution and paleogeography of echinoids in this region. The figured specimens were attributed to collections at Johns Hopkins University, but without catalog numbers. During study of the paleobiology collections of the National Museum of Natural History (NMNH), Smithsonian Institution, two vials were discovered with small, handwritten labels referencing the figure numbers in Clark and Martin (1901). The contained specimens were recognized as those figured in the report. They have been cataloged in the NMNH collections as follows:

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 84 , Issue 1 , January 2010 , pp. 148
Copyright
Copyright © The Paleontological Society 

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References

Clark, W. B. 1896. The Eocene Deposits of the Middle Atlantic Slope in Delaware, Maryland, and Virginia. U.S. Geological Survey Bulletin 141, 167 p.Google Scholar
Clark, W. B. and Martin, G. C. 1901. The Eocene Deposits of Maryland. Systematic Reports. Maryland Geological Survey, 331 p.Google Scholar
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Smith, A. B. and Jeffery, C. H. 2000. Maastrichtian and Palaeocene echinoids: A key to world faunas. The Palaeontological Association London, Special Papers in Palaeontology, 63, 406 p.Google Scholar