Where: Calvert County, Maryland (38.5° N, 76.5° W: paleocoordinates 38.6° N, 73.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Boston Cliffs Member (Choptank Formation), Serravallian (13.8 - 11.6 Ma)
• in shell layer of sandy zone 19, about 14 feet above beach level
Environment/lithology: offshore shelf; sandy sandstone
Size class: macrofossils
Collection methods: surface (in situ),
Primary reference: E. C. Case. 1904. Systematic Paleontology: Reptilia. Maryland Geological Survey Miocene: Text 62-70 [M. Uhen/M. Uhen/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 13408: authorized by Mark Uhen, entered by Mark Uhen on 14.03.2002, edited by Margaret Shalap
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
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Bivalvia | |
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"Crassatella turgidula" = Marvacrassatella turgidula2
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Mammalia | |
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Aves | |
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