>Incidentally, E. quadricostata turns out to be a misidentification
>(based on erroneous locality data).  True quadricostata is the form
>in the Pliocene Yorktown and equivalents, which is largely absent
>from Maryland.  E. gardnerae is one of the similar species from the
>Maryland Miocene.  Of course, if you believe one particular approach
>to Ecphora, you can just create a new species name (and maybe a new
>genus) for your specimen...

Hey, why not name it E. petuchi?