Also known as Corunna, MI

Where: Michigan (43.0° N, 84.1° W: paleocoordinates 29.8° S, 31.0° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Saginaw Formation, Late/Upper Devonian (382.7 - 358.9 Ma)

Environment/lithology:

Size class: macrofossils

Collection methods: quarrying,

Primary reference: C. A. Arnold. 1937. The Seeds of Alethopteris, and other Pteridosperms from North America. Compte rendu du deuxieme Congre pour l'avancement des estudes de Stratigraphie Carbonifere--Heerlen 1935 1-4 [W. Stein/J. Kao/J. Kao]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 21217: authorized by Bill Stein, entered by Jenny Kao on 20.06.2002

Creative Commons license: CC BY (attribution)