Cadoceras comma Imlay 1953 (ammonite)

Cephalopoda - Ammonitida - Cardioceratidae

Full reference: R. W. Imlay. 1953. Callovian (Jurassic) ammonites from the United States and Alaska Part 2. Alaska Peninsula and Cook Inlet regions. United States Geological Survey Professional Paper 249-B:41-108

Belongs to Cadoceras according to A. J. Arthur et al. 1993

See also Imlay 1953

Sister taxa: Cadoceras (Bryocadoceras), Cadoceras (Pseudocadoceras), Cadoceras bathomphalum, Cadoceras bellabimba, Cadoceras doroschini, Cadoceras glabrum, Cadoceras kialagvikense, Cadoceras pishmae, Cadoceras tenuicostatum, Cadoceras wosnessenskii

Type specimen: USNM 108057, a shell. Its type locality is USGS Mesozoic 21348, Iniskin Peninsula, which is in a Callovian marine siltstone in the Chinitna Formation of Alaska.

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell diameter 49.2

Distribution:

• Jurassic of Canada (3: British Columbia collections), United States (23: Alaska)

Total: 26 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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