Full reference: D. G. Taylor. 1998. Late Hettangian-early Sinemurian (Jurassic) ammonite biochronology of the western Cordillera, United States. Geobios 31:467-497
Type specimen: CAS 66700.01, a shell. Its type locality is Morgan Mountain vicinity, which is in an Angulata marine limestone in the Graylock Formation of Oregon.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 117.5
Distribution: found only at Morgan Mountain vicinity
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.