Where: Charles County, Maryland (38.4° N, 77.0° W: paleocoordinates 38.6° N, 73.0° W)
• coordinate estimated from map
When: Fairhaven Member (Calvert Formation), Burdigalian (20.4 - 16.0 Ma)
• Popes Creek Sand bed occurs within zone 3b of the Fairhaven member
• group of beds-level stratigraphic resolution
Environment/lithology: estuary or bay; sandstone
Size class: macrofossils
Preservation: original phosphate
Reposited in the USNM
Collection methods: surface (in situ),
Primary reference: M. D. Uhen. 2007. USNM Chesapeake Group Cetacean Collection Data. [M. Uhen/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 71810: authorized by Mark Uhen, entered by Mark Uhen on 11.05.2007, edited by Evangelos Vlachos and Margot Nelson
Creative Commons license: CC BY (attribution)
Taxonomic list
| Reptilia | |
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Psephophorus polygonus2 von Meyer 1847 leatherback Numerous large dorsal and ventral dermal shield fragments (USNM 364381) plus two cervical vertebrae, three caudal vertebrae, partial scapula, largely complete right and left pubes, right ilium, and left ischium, collected by Robert E. Weems and Stephen R. Horman. Numerous dorsal and ventral dermal shield fragments (CMM-V-8773) associated with girdle elements, limb elements, and a few skull fragments, collected by Kyle Grimsley and Gary Grimsley
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Cheloniidae indet.2 Bonaparte 1832 sea turtle Left epiplastron (CMM-V-8774), collected by Kyle Grimsley. Third neural (CMM-V-8883), collected by Kyle Grimsley
Procolpochelys grandaeva2 Leidy 1861 sea turtle Neural element (USNM 1184), collected by R. Lee Collins, Partial skull (USNM 358862) including most of left side (except squamosal) and entire basicranium region, collected by Robert E. Weems, (1) Left hyoplastron and hypoplastron (CMM-V-8769), found by Kyle Grimsley in the Popes Creek Sand Bed, Fairhaven Member, Calvert Formation; in bluffs south of Popes Creek, Charles County, Maryland. (2) Fifth cervical vertebra (CMM-V-8772), collected by Kyle Grimsley from the Popes Creek Sand Bed, Fairhaven Member, Calvert Formation; in bluffs south of Popes Creek, Charles County, Maryland. (3) Interneural element (CMM-V-8771), collected by Gary Grimsley from the Popes Creek Sand Bed, Fairhaven Member, Calvert Formation; in bluffs south of Popes Creek, Charles County, Maryland. (4) Left epiplastron (CMM-V-8775), collected by Kyle Grimsley from the Popes Creek Sand Bed, Fairhaven Member, Calvert Formation; in bluffs south of Popes Creek, Charles County, Maryland. (5) Suprapygal (CMM-V-8770), collected by Kyle Grimsley from the Popes Creek Sand Bed, Fairhaven Member, Calvert Formation; in bluffs south of Popes Creek, Charles County, Maryland. (6) Pygal (CMM-V-8408), collected by Daryl Domning from the Popes Creek Sand Bed, Fairhaven Member, Calvert Formation; in bluffs south of Popes Creek, Charles County, Maryland. (7) Partial carapace (CMM-V-5956) including part of neural 4; posterior half of neural 7; all of neural 8; proximal parts of right costals 2 and 3; right costals 5–6; parts of right costal 7; most of left costals 3, 6, 7, and 8; first suprapygal; and proximal end of a coracoid, collected by Ron Ison from the Popes Creek Sand Bed, Fairhaven Member, Calvert Formation; right (south) bank of the Pamunkey River, New Kent County, Virginia.
Trachyaspis lardyi2 Meyer 1873 sea turtle Partial carapace (CMM-V-243) with neural lacking a ridge, collected by Norman L. Riker, Calvin Taylor, and David J. Bohaska
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Hesperotestudo williamsi2 Auffenberg 1964 turtle Partial entoplastron (CMM-V-8952), collected by Kyle Grimsley
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| Mammalia | |
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? Cynorca sp. Cope 1867 peccary | |
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Eurhinodelphis sp. Van Beneden and Gervais 1880 toothed whale | |
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Caolodelphis milleri n. gen. n. sp.1
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