Eosomichelinoceras Chen 1974
- Dataset
- Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities
- Rank
- GENUS
Classification
- phylum
- Mollusca
- class
- Cephalopoda
- order
- Orthocerida
- family
- Baltoceratidae
- genus
- Eosomichelinoceras
diagnosis
Diagnosis Smooth or transversally striated, slender, orthoconic baltoceratids with narrow, tubular siphuncle. Siphuncle is eccentric with rSP of more than 0.2, and with rSD ≈ 0.2 or less. Septal necks are orthochoanitic. Endosiphuncular or cameral deposits are not known (adopted from Kröger et al. 2007).
type_taxon
Type species Eosomichelinoceras huananense J. - Y. Chen, 1974, from the Middle Ordovician of Southwest China; by original designation.