Leptocoelia flabellites from the Glenerie formation of New York

I made a trade with a friend from my local fossil club (Delaware Valley Paleontological Society) for some fossils that he'd picked up from Rutger's University. Every year the university holds a sale of donated and superfluous specimens of minerals and fossils as a fund raiser. In this case my friend purchased specimens which had been part of the collections but were being deaccessioned for one reason or another.  In this case it's a couple of rough specimens of Leptocoelia flabellites from the Lower Devonian aged (Pragian stage), Glenerie Fm. near Glenerie, NY.

Pedicle valve

Anterior

Brachial valve is missing

Posterior

Profile

Interior of pedicle valve from a different specimen.

Note: The white paint and india ink numbers are typical of specimens that have been part of a collection, especially if they were in a museum.