Bivalve Mollusks from the Maxville Limestone (Mississippian) in Ohio

Abstract

Bivalve mollusks are a common component of the Chesterian Maxville Limestone in Ohio, although not as abundant as the brachiopods. A number of taxa were found preserved as internal molds making identification difficult. The new species Leptodesma (Leptodesma) rhysema, Limipecten lamellus, Astartella clinata, and Sanquinolites hekitoensis are among the 29 taxa now known from the formation. The shale unit near the top of the formation contains mytilaceans and abundant pectenaceans dominated by Aviculopecten winchelli Meek, 1875, the latter with inarticulate brachiopod epibionts.