Catoraphiceras Ulrich & Foerste 1936
- Dataset
- Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities
- Rank
- GENUS
Classification
- phylum
- Mollusca
- class
- Cephalopoda
- order
- Tetrabranchia
- family
- Cyptendoceratidae
- genus
- Catoraphiceras
diagnosis
Diagnosis Annulated orthocones whose sutures form ventral lobes; cross section is depressed to circular; siphuncles are moderately large (rSD = 0.25 – 0.35) and somewhat removed from the venter; septal necks are short; connecting rings are thin; some species develop ventral rods and cameral deposits (adopted from Hook & Flower 1977).
discussion
Remarks The genus was previously placed within the Protocycloceratidae.
type_taxon
Type species Catoraphiceras lobatum Ulrich & Foerste, 1936; probably from the Powell horizon (late Floian – early Dapingian Stage), Wells Creek basin, northeast of Erin, Tennessee, USA; by original designation.
Name
- Homonyms
- Catoraphiceras Ulrich & Foerste 1936