Cephalopoda - Goniatitida - Marathonitidae

Alternative combinations: Marathonites jamesperrinsmithi, Stacheoceras (Marathonites) jpsmithi

Full reference: E. Böse. 1919. The Permo-Carboniferous ammonoids of the Glass Mountains, west Texas, and their stratigraphic significance. Texas Bureau of Economic Geology Bulletin 1762:1-241

Belongs to Marathonites according to M. Ehiro et al. 2014

See also Bogoslovskaya 1990, Böse 1919 and Plummer and Scott 1937

Sister taxa: Marathonites (Marathonites), Marathonites guangdongensis, Marathonites moorei, Marathonites uralensis, Marathonites vidriensis

Type specimen: Its type locality is Wolf Camp, Glass Mountains, which is in a Gzhelian carbonate limestone in the Gaptank Formation of Texas

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell diameter 18.0

Distribution: found only at Wolf Camp, Glass Mountains

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Specimen images are retrieved through the ePANDDA API.