Submitted by: Joseph Koniecki
Taxon: Aulacophyllum hemicrassatum
Submit date: 2016-02-08
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Thunder Bay Formation
Age: Erian (Middle Devonian)
Submitter notes: These corals are not attached at the bottom. It appears that they may have grown up along side of each other and been buried together. The corals are about 10-12 cm in height.