Submitted by: David Thompson
Submit date: 2008-03-12
Location (approximate): Jackson, Jackson, MI
Stratigraphy: Marshall Formation
Age: Osagian (Early Mississippian)
Submitter notes: This is example of straight nautiloid from the Blue Ridge Esker south of Jackson along with a hash of pelecypods. In these photos a US 25 cent piece is used for scale.