Michael Reagin

They could be fossil but SC beach finds are not my expertise.  I can however confirm that Mercenariais found both in the James City and Waccamaw Formations.

Yes I was there!

I looked before I posted but my three companions are not on myFossil.  What the pictures don’t tell is the more than one mile hike in to the new piles and the trip out loaded down with shell and coral.  Fortunately the wagon helped.

Field photos from Lee County, Florida March, 2017.  Collecting fossil shells and corals from the Upper Pliocene Golden Gate Member of the Tamiami Formation.

Field photos from Lee County, Florida.  Collecting fossil shells and corals from the Upper Pliocene Golden Gate Member of the Tamiami Formation.

These should work this time.  Field photos from the PaleoBlitz trip to Possum Creek.

PaleoBlitz 2016

I don’t see any drill holes in these specimens.  If you are referring to the hole in the top of Diodora chipolana carolinensis that is a feature of species in the Family Fissurellidae aka the key hole limpets.  These marine gastropods strongly attach to hard substrates and allow water to enter under their shells and over their gills forcing exhalent water and bodily wastes out through the hole at the top of the shell.

On a 2009 Birmingham Paleontological Society fieldtrip with an arm full of Pycnodonte and Exogyra in a chalk gully exposing the Blufftown Marl member of the Demopolis Formation, Sumter County, Alabama.

Collecting fossil shells and echinoids in 2001.  Upper Pliocene San Diego Formation, Pacific Beach, California.

Collecting fossil mollusks from the Moore House Member of the Yorktown Formation at the Lone Star quarry in Chuckatuck, Virginia in 2003.