Systematic Paleontology
Class: Cephalopoda
Subclass: Nautiloidea
Order: Nautilida
Superfamily: Tainocerataceae
The Tainocerataceae is a superfamily of lower Devonian to Triassic nautilids uniting forms with straight to loosely coiled shells with depressed to quadrate whorl sections. Early forms with straight to loosely coiled shells bore spines, ribs, nodes, wings, or frills. Later forms with more tightly coiled shells bore node or ribs or both. The siphuncle in early forms was generally near ventral but more variable and usually central in later forms. Sutures show very shallow lobes on the flanks and venter.
According to the part K of the Treatise, the Tainocerataceae includes families Tainoceratidae, Rutoceratidae, Tetragonoceratidae, Rhiphaeoceratidae, and Koninckioceratidae. Later the Gzheloceratidae and Mosquoceratidae were added.
The Tainocerataceae, established by Alpheus Hyatt in 1883, is equivalent overall to the suborder Rutoceratina established later by Shimanskiy in 1957.
References
Bernhard Kummel, 1964. Nautiloidea-Nautilida. Treatise on Invertebrate Paleontology, Part K.
Fossilworks:Tainocerataceae [1]
Suborder Tainoceratina Shimansky 1964 [2]