Rutoceratidae is a

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

of prototypical nautilids, derived probably from either Brevicoceratidae or Acleistoceratidae of the

order Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica * Categorization, the process in which ideas and objects are recognized, differentiated, and understood ...

Oncocerida early in the

Devonian The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian per ...

. Rutoceratidae comprise a family within the oncocerid superfamily TainocerataceaeKummel 1964, Nautiloidea-Nautilida; Treatise on Invertebrate Paleontology, Part K: Nautiloidea, Teichert & Moore (eds) They are generally characterized by cyrtoconic and gyroconic shells, commonly with spines, nodes, or frills, although some included genera are almost orthoconic, and a commonly empty, tubular ventral siphuncle. The Rutocertids lived during the

and Mississippian (early Carboniferous) and are the ancestral stock of

Nautilida The Nautilida constitute a large and diverse order of generally coiled nautiloid cephalopods that began in the mid Paleozoic and continues to the present with a single family, the Nautilidae which includes two genera, ''Nautilus'' and ''Allonauti ...

. Within the superfamily Taintocerataceae, rutoceratids gave rise to the exclusively Devonian family Tetragonoceratidae and near the start of the Mississippian to the family Koninckioceratidae which lasted into the

Permian The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the s ...

and to Tainoceratidae which lasted through most of the

Triassic The Triassic ( ; sometimes symbolized 🝈) is a geologic period and system which spans 50.5 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.4 Mya. The Triassic is t ...

Genera

* '' Adelphoceras'' * '' Anomaloceras'' * '' Casteroceras'' * '' Centrolitoceras'' * '' Diademoceras'' * '' Duerleyoceras'' * '' Goldringia'' * '' Halloceras'' * '' Hercoceras'' * '' Hindeoceras'' * '' Homoadelphoceras'' * '' Litogyroceras'' * '' Muiroceras'' * '' Pleuroncoceras'' * '' Ptenoceras'' * '' Ptyssoceras'' * '' Roussanoffoceras'' * '' Rutoceras'' * '' Syrreghmatoceras'' * '' Tetranodoceras'' * '' Threaroceras'' * '' Trochoceras'' * '' Tylorthoceras''

References

{{Taxonbar, from=Q7383528 Nautiloids Early Devonian first appearances Mississippian extinctions