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Metoicoceras praecox Haas 1949 (ammonite)

Cephalopoda - Ammonitida - Acanthoceratidae

PaleoDB taxon number: 318406

Full reference: O. Haas. 1949. Acanthoceratid ammonoidea from the Greybull, Wyoming. Bulletin of the American Museum of Natural History 93(1)

Belongs to Metoicoceras according to W. A. Cobban and W. J. Kennedy 1991

Sister taxa: Metoicoceras bergquisti, Metoicoceras geslinianum, Metoicoceras gibbosum, Metoicoceras latoventer, Metoicoceras mosbyense, Metoicoceras muelleri, Metoicoceras swallovi

Type specimen: AMNH 26415, a shell

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell width 23.5, shell diameter 78.9