Cephalopoda - Nautilida - Tainoceratidae
Alternative combination: Pleuronautilus idahoensis
Synonyms: Enoploceras newelli Kummel 1953, Germanonautilus montpelierensis Kummel 1953, Metacoceras (Mojsvaroceras) frenchi Kummel 1953, Mojsvaroceras frenchi Kummel 1953, Pleuronautilus (Enoploceras) newelli Kummel 1953
Full reference: B. Kummel. 1953. American Triassic coiled nautiloids. United States Geological Survey Professional Paper 250:1-104
Belongs to Phaedrysmocheilus according to A. Brayard et al. 2019
See also Kummel 1953 and Schastlivtseva 1988
Sister taxa: Phaedrysmocheilus evolutus, Phaedrysmocheilus involutus, Phaedrysmocheilus nestori, Phaedrysmocheilus ornatus, Phaedrysmocheilus subaratus, Phaedrysmocheilus velivolus
Type specimens:
- Phaedrysmocheilus idahoensis: USNM 107079. Its type locality is Hot Springs, Columbites Zone, which is in a Spathian offshore shale in the Thaynes Formation of Idaho.
- Enoploceras newelli: USNM 107085. Its type locality is Montpelier Canyon, upper shale member, which is in a Spathian offshore shale in the Thaynes Formation of Idaho.
- Germanonautilus montpelierensis: USNM 107089. Its type locality is Hot Springs, Columbites Zone, which is in a Spathian offshore shale in the Thaynes Formation of Idaho.
- Mojsvaroceras frenchi: USNM 107069. Its type locality is Montpelier Canyon, upper shale member, which is in a Spathian offshore shale in the Thaynes Formation of Idaho.
Average measurements (in mm): shell diameter 85.3
Distribution:
• Triassic of United States (3: Idaho collections)
Total: 3 collections including 6 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.