Submitted by: ummp invertebrate paleontology
Taxon: Calymene platys
Submit date: 2008-12-02
Location (approximate): Mackinaw City, Cheboygan, MI
Stratigraphy: Bois Blanc Formation
Age: Ulsterian (Middle Devonian)
Submitter notes: This specimen is a hypotype. It is 6.5 cm across.