Pachyteuthis
Species
Pachyteuthis densus (Meek and Hayden, 1865)
Occurrence: Redwater Shale of Wyoming and South Dakota; Swift Formation of central Montana
Originally named Belemnites densus
Reference: Danise and Holland, 2017
![Specimen Photo](PachyteuthisDensus.jpg)
Pachyteuthis densus
Drawing from Meek and Hayden, 1865