Portobello Point, Zones 24 (Miocene of the United States)
Where: St. Marys County, Maryland (38.2° N, 76.5° W: paleocoordinates 38.3° N, 74.4° W)
• coordinate estimated from map
When: Windmill Point Member (Saint Marys Formation), Tortonian (11.6 - 7.2 Ma)
Environment/lithology: marine; argillaceous, silty sandstone
Primary reference: L. W. Ward. 1992. Molluscan biostratigraphy of the Miocene Middle Atlantic Coastal Plain of North America. Virginia Museum of Natural History 2 [A. Miller/A. Hendy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 71636: authorized by Mark Uhen, entered by Mark Uhen on 02.05.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Gastropoda | |
"Turritella plebeia" = Mariacolpus plebeia, Turritella subvariabilis
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Buccinofusus parilis Conrad 1832 snail | |
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Nassarius (Tritiaria) peralta Conrad 1868 snail
Bulliopsis quadrata Conrad 1830 snail | |
"Terebra simplex" = Laevihastula simplex
"Terebra simplex" = Laevihastula simplex Conrad 1830 auger snail | |
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Conus deluvianus Green 1830 cone shell | |
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| Bivalvia | |
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Chesapecten santamaria Tucker 1934 scallop | |
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Dallarca idonea Conrad 1832 clam | |
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"Lirophora alveata" = Lirophora (Lirophora) alveata Conrad 1831 venus clam
Mercenaria tetrica Conrad 1838 quahog | |
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Mactrodesma subponderosa d'Orbigny 1852 clam | |
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Astarte perplana Conrad 1840 clam | |