High-resolution analysis of sediments from four coreholes associated with the Chesapeake Bay impact crater has resulted in the identification of a new species, Catinaster virginianus. This species is similar to Catinaster coalitus coalitus, but differs in having a proximal stem. The first occurrence of C. virginianus is in Zone NN5, and is older than any previously identified Catinaster. This species has been identified previously as Catinaster sp. from the Gulf of Mexico and the Carpathian Foredeep and suggests both a global distribution and synchronous stratigraphic range. Morphologic similarities with Discoaster variabilis may suggest a taxonomic relationship to the D. variabilis lineage.
|Title||<i>Catinaster virginianus</i> sp. nov.: A new species of <i>Catinaster</i> from the middle Miocene Mid-Atlantic Coastal Plain|
|Authors||Jean M. Self-Trail|
|Publication Subtype||Journal Article|
|Series Title||Journal of Nannoplankton Research|
|Record Source||USGS Publications Warehouse|
|USGS Organization||Eastern Geology and Paleoclimate Science Center|