Cephalopoda - Ammonitida - Perisphinctidae
Alternative combinations: Ammonites colfaxii, Perisphinctes colfaxi
Full reference: W. M. Gabb. 1870. Descriptions of some secondary fossils from the Pacific states. American Journal of Conchology 5:5-18
Belongs to Grossouvria according to R. W. Imlay 1961
See also Gabb 1870 and Hyatt 1894
Sister taxa: Choffatia (Choffatia), Choffatia acuticosta, Choffatia arisphinctoides, Choffatia baluchistanensis, Choffatia cerealis, Choffatia furcula, Choffatia jupiter, Choffatia neumayri, Choffatia perdagata, Choffatia poculum, Choffatia schilleri, Choffatia subbackeriae, Choffatia suborion, Grossouvria kontkiewiczi, Grossouvria crassa, Grossouvria delbosi, Grossouvria evexa, Grossouvria sulciferus, Loboplanulites prosorovskii, Loboplanulites cerealiformis, Loboplanulites choffatiaformis, Loboplanulites subkranaiformis, Loboplanulites zakharovi, Anaplanulites hyatti
Type specimen: MCZ 5287
Ecology: fast-moving nektonic carnivore
Distribution: found only at Railroad cut at sta. 2777, sec. 53, one mile west of Colfax (Jurassic of California)
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.