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Pycnodonte convexa (Say 1820) Oyster internal and external view of left valve
(DSM# 10761) Bottom image of shell shows growth lines. The upper image shows the inside of the oyster including the round muscle scar.
Pycnodonte convexa (Say 1820) Articulated right/left valve
(no DSM#) This common name for this type of oyster is called the Foam Oyster, or Honeycomb Oyster. Their temporal range extends all they way to the early Pleistocene, which means they survived the K-Pg extinction.
Pugnellus densatus (Conrad 1860) Snail Fossil
(no DSM#) Extinct species - Living snails from this family are slow moving and feed organic material found on the ocean floor (detritivores).
Pugnellus densatus (Conrad 1860) Sea Snail Fossil
(DSM# 3257/FK143) An extinct genus of marine snail.
Pterotrigonia aff. thoracica (van Hoepen 1929) Single Clam valve
(DSM# 10171) Pterotrigonia is the state fossil of Tennessee. This specimen is preserved in pyrite.
Pterocella sp. (Meek 1864) Snail Fossil
(DSM# 10667) Extinct genus - Pterocerella (pelican foot snail) was a highly ornamented detritivore (bottom feeding) species of snail.
Plicatula aff. urticosa? (Morton 1833) Rght/left valves with internal molds
(DSM# M180) Though this species is extinct the genus Plicatula is a marine mussel that is known to be a filter feeder today.
