Invertebrate fossil, GSA Paleozoic number 3181, from the GSA Paleozoic invertebrate paleontology collection. This specimen box contains 7 specimen(s) of the blastoid Pentremites pyriformis from the Mississippian Chester Formation in IL, USA.
Summary
Invertebrate fossil, GSA Paleozoic number 3181, from the GSA Paleozoic invertebrate paleontology collection. This specimen box contains 7 specimen(s) of the blastoid Pentremites pyriformis from the Mississippian Chester Formation in IL, USA.