Tainoceras is an extinct coiled cephalopod that live during the later part of the Paleozoic and Triassic, that belongs to the nautiloid family Tainoceratidae.[1]

Tainoceras
Temporal range: Pennsylvanian- Triassic
Tainoceras reconstruction at Carnegie Museum of Natural History
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Nautilida
Family: Tainoceratidae
Genus: Tainoceras
Hyatt, 1883

Tainoceras has an evolude shell with a subquadrate whorl section that bears a double row of nodes on either side of its broad outer rim (venter). Metacoceras is similar except for lacking the double rows of nodes. Tainionautilus is similar, except that instead of nodes it has thick slanting lateral ribs

References

edit
  1. ^ Kummel 1964, Nautiloidea—Nautilida. Treatise on Invertebrate Paleontology Part K Mollusca 3. Geol Soc of America and Univ Kansas Press Teichert and Moore (eds)