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Inoceramus sp. (Sowerby 1814) R/L valves of clam in matrix
(DSM# 3126/FK142) One specimen from the genus Inoceramus measured 187 cm (74 inches) across.
Pycnodonte cf. vesicularis (Campbell & Engel 1963) Oytster left valve - interior and exterio
(DSM# FK117) Extinct bivalve suspension feeder of the Paleozoic.
Pycnodonte mutabilis (Morton 1828) Left valve - interior and exterior
(DSM# FK105) Extinct genus of oysters.
Exogyra ponderosa erraticostata (Stephenson) Oyster left/right valve
(DSM# FK197) Extinct genus of marine bivalve that lived on solid substrates.
Exogyra costata (Say 1971) Oyster left valve - interior and exterior
(DSM# M157/FK319) Extinct genus of marine bivalve that lived on solid substrates.
Exogyra cancellata (Stephenson 1914) Oyster left valve - interior and exterior
(DSM# FK110) Extinct genus of marine bivalve that lived on solid substrates.
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.
Pycnodonte vesicularis (Lamarck 1801) Oyster left valve
(DSM# 10747) The common name of this species is called a Devil's toenail.
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.
Exogyra costata (Say 1871) Oyster right/left valve
(no DSM#) Extinct species - This oyster that is extremely common in the Late Cretaceous strata of North Mississippi. Sometimes you can find these creatures encrusting other organisms.