Illustrations of four Cretaceous ammonites

Illustrations of four Cretaceous ammonites

Detailed Description

Ammonites: Pierre Shale is Upper Cretaceous, approximately 70-67 Ma. Middle Park ammonites in the Survey collection have been artistically rendered by John Stacy and widely published in USGS Bulletins and Professional Papers.

Details

Image Dimensions: 1190 x 375

Date Taken:

Location Taken: US