Submitted by: David Thompson
Taxon: Spongophyllum alpenense.
Submit date: 2008-05-11
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Potter Farm Formation
Age: Erian (Middle Devonian)
Submitter notes: Closeup view of Spongophyllum alpenense coral showing detail of coralites. There are several Bryozoan colonies upon the same coral head. The coral is about 9'(22.8 cm) by 7' (17.7 cm) by 4 1/2' (11.4 cm) thick and weighs 8 1/2 lb or 3.85 Kg. This was removed from soft clay at the Potter Farm location in Alpena.