U.S. Geological Survey: Science for a Changing World - USGS visual identifier and link to main Web site at http://www.usgs.gov/

Mollusks common in the St. Marys Formation. For a more detailed explanation, contact Lauck Ward at lwward@vmnh.net.

PLATE 7.
[Mollusks common in the St. Marys Formation]


FIGURE 1. Conus deluvianus Green, 1830.
    Apertural view of neotype (USNM 405343) from above Windmill
    Point, St. Marys River, St. Marys County, Md. (USGS Locality
    26554); height 55.3 mm.
  2. Urosalpinx subrusticus (d'Orbigny, 1852).
    Apertural view of specimen (USNM 405326); height 27.7 mm.
  3. Nassarius (Tritiaria) peralta (Conrad, 1868).
    Apertural view of specimen (USNM 405335) from above Windmill
    Point, St. Marys River, St. Marys County, Md. (USGS Locality
    26554); height 14.9 mm.
4, 6. Mactrodesma subponderosa (d'Orbigny, 1852).
    4. Exterior of right valve (USNM 405256) from above Windmill Point,
    St. Marys River, St. Marys County, Md. (USGS Locality 26554);
    length 103.8 mm, height 78.2 mm.
    6. Interior view of left valve (USNM 405257) from the same locality;
    length 104.2 mm, height 80.9 mm.
  5. Buccinofusus parilis (Conrad, 1832).
    Apertural view of specimen (USNM 405339) from above Windmill
    Point, St. Marys River, St. Marys County, Md. (USGS Locality
    26554); height 101.5 mm.

U.S. Department of the Interior, U.S. Geological Survey
URL: https:// pubsdata.usgs.gov /pubs/circ/2004/1264/html/trip9/plate7.html
For more information, contact Lauck Ward.
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