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Collignoniceras jorgenseni Kennedy et al. 2001 (ammonite)

Cephalopoda - Ammonitida - Collignoniceratidae

PaleoDB taxon number: 145202

Full reference: W. J. Kennedy, W. A. Cobban, and N. H. Landman. 2001. A revision of the Turonian members of the ammonite subfamily Collignoniceratinae from the United States Western Interior and Gulf Coast. Bulletin of the American Museum of Natural History 267:1-148

Belongs to Collignoniceras according to W. J. Kennedy et al. 2001

Sister taxa: Collignoniceras bravaisianum, Collignoniceras carolinum, Collignoniceras klamathensis, Collignoniceras percarinatum, Collignoniceras praecox, Collignoniceras vermilionense, Collignoniceras woollgari, Prionotropis caurinus, Prionotropis casperi, Prionotropis hiltensis, Selwynoceras mexicanum

Type specimen: USNM 498249, a shell. Its type locality is USGS Loc. D13834, Fall River Co. [Carlile Shale], which is in a Turonian marine shale in the Carlile Shale Formation of South Dakota.

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell 17.5 x 5.3