Proclydonautilus ursensis Smith 1927 (nautiloid)

Cephalopoda - Nautilida - Clydonautilidae

Full reference: J. P. Smith. 1927. Upper Triassic marine invertebrate faunas of North America. United States Geological Survey Professional Paper 141:1-262

Belongs to Proclydonautilus according to B. Kummel 1953

See also Smith 1927

Sister taxa: Proclydonautilus anianiensis, Proclydonautilus gasteroptychus, Proclydonautilus goniatites, Proclydonautilus hessi, Proclydonautilus kiparisovae, Proclydonautilus natosini, Proclydonautilus okhotensis, Proclydonautilus pseudoseimkanensis, Proclydonautilus seimkanensis, Proclydonautilus sinekensis, Proclydonautilus spirolobus, Proclydonautilus squawensis, Proclydonautilus stantoni, Proclydonautilus triadicus

Type specimen: Its type locality is Bear Cove, north end and east side of Brock Mountain, which is in a Tuvalian carbonate limestone in the Hosselkus Formation of California

Ecology: nektobenthic carnivore

Average measurements (in mm): shell diameter 51.2

Distribution: found only at Bear Cove, north end and east side of Brock Mountain

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