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 Piscataway Member of the Aquia Formation. For a more detailed explanation, contact Lauck Ward at lwward@vmnh.net.

PLATE 1.
[Mollusks common in the Piscataway Member of the Aquia Formation. All specimens were collected from the Pamunkey River, 0.5 mi (0.8 km) east of Wickham Crossing, Hanover County, Va. (USGS Locality 26337)]
FIGURE 1, 2, 4, 5. Ostrea alepidota Dall, 1898.
1. Left valve of specimen (USNM 366570); length 73.5 mm, height 85.1 mm.
2. Right valve of specimen (USNM 366470); length 65.4 mm, height 82.6 mm.
4. Left valve of specimen (USNM 366472); length 58.9 mm, height 74.3 mm.
5. Left valve of specimen (USNM 366473); length 36.3 mm, height 44.6 mm.
3. Turritella humerosa Conrad, 1835.
Apertural view of an incomplete specimen (USNM 366471); height 32.5 mm.
6. Turritella mortoni Conrad, 1830.
Apertural view of incomplete specimen (USNM 366474); height 35.8 mm.
7. Cucullaea gigantean Conrad, 1830.
Left valve of specimen (USNM 366475); length 42.4 mm, height 27.4 mm.
8. Pitar pyga Conrad, 1845.
Left valve of a double-valved specimen (USNM 366476); length 46.3 mm,
height 38.9 mm.
9. Crassatellites capricranium (Rogers, 1839).
Left valve of specimen (USNM 366477); length 59.1 mm, height 38.6 mm.
10. Dosiniopsis lenticularis (Rogers, 1839).
Left valve of specimen (USNM 366478); length 47.1 mm, height 44.5 mm.

U.S. Department of the Interior, U.S. Geological Survey
URL: https:// pubsdata.usgs.gov /pubs/circ/2004/1264/html/trip9/plate1.html
For more information, contact Lauck Ward.
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