Where: Calvert County, Maryland (38.6° N, 76.5° W: paleocoordinates 38.8° N, 73.2° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Plum Point Member (Calvert Formation), Langhian (16.0 - 13.8 Ma)
• STRATIGRAPHIC RELATIONS: From Plum Point Mbr of the Calvert Fm, Chesapeake Grp. AGE: Middle Miocene. STRATIGRAPHIC POSITION: Unknown position within member.
• bed-level stratigraphic resolution
Environment/lithology: coastal; unlithified, coarse-grained, shelly/skeletal, sandy marl
Size class: macrofossils
Preservation: original aragonite
Collection methods: bulk, sieve,
• COLLECTOR: Presumably K. Castor, 1960's. REPOSITORY: Department of Geology, University of Cincinnati.
Primary reference: A. J. W. Hendy, D. P. Buick, K. V. Bulinski, C. A. Ferguson, and A. I. Miller. 2008. Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions. [A. Hendy/A. Hendy/A. Hendy]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 69023: authorized by Austin Hendy, entered by Austin Hendy on 15.02.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Dallarca subrostrata Conrad 1841 clam | |
Chesapecten (Chesapecten) nefrens Ward and Blackwlder 1975 scallop | |
"Mya cf. arenaria" = Mya (Arenomya) arenaria
"Mya cf. arenaria" = Mya (Arenomya) arenaria Linnaeus 1758 softshell clam | |
Varicorbula elevata Conrad 1838 clam | |
Barnea sp. Leach 1826 clam | |
Tagelus sp. Gray 1847 clam | |
"Dosinia (Dosinidia) acetabulum" = Dosinia acetabulum, Mercenaria blakei
"Dosinia (Dosinidia) acetabulum" = Dosinia acetabulum Conrad 1832 venus clam
Mercenaria blakei Ward 1992 quahog | |
"Spisula" subcuneata Conrad 1838 clam | |
Ensis ensiformis Conrad 1843 clam | |
Pandora sp. Bruguière 1797 clam | |
Gastropoda | |
"Turritella plebeia" = Mariacolpus plebeia, Turritella exaltata
"Turritella plebeia" = Mariacolpus plebeia Say 1824 turret shell
Turritella exaltata Conrad 1841 turret shell | |
Euspira cf. heros Say 1822 moon snail
Neverita duplicatus Say 1822 moon snail | |
Columbellidae indet. Swainson 1840 snail | |
Busycon cf. fusiforme whelk | |
Bulliopsis sp. snail
Nassarius (Tritaria) peralta Conrad 1868 snail | |
Cancellaria sp. Lamarck 1799 snail | |
Turridae indet. Swainson 1840 turrid | |
Conus deluvianus Green 1830 cone shell | |
"Terebra cf. simplex" = Laevihastula simplex
"Terebra cf. simplex" = Laevihastula simplex Conrad 1830 auger snail | |
Muricidae indet. Rafinesque 1815 murex snail
"Typhis" acuticosta Conrad 1830 murex snail | |
"Crucibulum costatum" = Crucibulum (Dispotaea) costata, Crepidula fornicata
"Crucibulum costatum" = Crucibulum (Dispotaea) costata Say 1820 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell |