Monday, January 18, 2010

Silurian Atrypa Brachiopod

Brachiopod fossil found yesterday in the Waldron Shale in Clark County, Indiana.  It appears to be some sort of Atrypa brachiopod.  This post originally labeled it a Homoeospira evax (Hall) using the Indiana State Museum as an identification.  Note the Waldron Shale was formerly the Niagara Group.  This creature existed in the Silurian Period.


Here is a link to the Indiana State Museum collections showing a Silurian brachiopod.