I need some help. This bivalve came from a river here in eastern North Carolina. Pliocene Yorktown Formation, zone 2 Rushmere member. I believe it is in the Family Pteriidae (pearl oysters) Genus Crenatula. However I cannot find anything in any literature I have or can come up with. Complete specimens are extremely rare at this site, though pieces are not uncommon.
Any thoughts? @MikeR @SailingAlongToo
Complete specimen top ... bottom ..
another one I found complete, but broke after it got home. So I opened it to picture the hinge details ....
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