ammonites
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Graysonites reynoldsi Kellum and Mintz 1962 (ammonite)

Cephalopoda - Ammonitida - Acanthoceratidae

PaleoDB taxon number: 145749

Full reference: L. B. Kellum and L. W. Mintz. 1962. Cenomanian ammonites from the Sierra de Tlahualilo, Coahuila, Mexico. Contributions from the Museum of Paleontology, University of Michigan 13(10):267-287

Belongs to Graysonites according to L. B. Kellum and L. W. Mintz 1962

Sister taxa: Graysonites adkinsi, Graysonites wacoense

Type specimen: UMMP 44723, a shell. Its type locality is Loc. 61-106, Cuenca de Francisco [Indidura Fm], which is in an Albian marine horizon in the Indidura Formation of Mexico.

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell 130.8 x 32.3