The Oncocerida comprise a diverse group of generally small nautiloid cephalopods known from the Middle Ordovician to the Mississippian (early Carboniferous;...

somewhat variable between authors, but it usually includes Tarphycerida, Oncocerida, and Nautilida. All nautiloids have a large external shell, divided into...

Pseudorthocerida (432 to 272 Ma) Order † Tarphycerida (485 to 386 Ma) Order † Oncocerida (478.5 to 324 Ma) Order Nautilida (extant; 410.5 Ma to present) Order...

Megaloceras is a genus of the nautiloid order Oncocerida that lived during the Silurian period of the Paleozoic. It is included in the family Karoceratidae...

2013, Multiceratoidea included four nautiloid orders: Ellesmerocerida, Oncocerida, Discosorida, and Ascocerida. The order Tarphycerida was considered a...

Aletoceras is a genus of Oncocerida nautiloids from the middle Devonian of North America included in the family Brevicoceratidae. The shell is a depressed...

resulting in large, long camarae. In others such as the Ellesmerocerida, Oncocerida and Discosorida the septa are crowded closely together. In some straight-shelled...

Grimsbyoceras is a nautiloid genus included in the Oncocerida order of the family Acleistoceratidae that lived during the Middle Devonian. They have been...

siphuncle, apparently with thin connecting rings characteristic of the Oncocerida and later Nautilida. Leonoardoceras is considered, as of ref. date, to...

in the Middle Silurian of North America, in Ontario. Oncocerids (Order Oncocerida) were Nautiloid cephalopods that lived during the early part of the Paleozoic...

taxonomies (Manda & Turek, 2009) the Rutoceratidae are included in the Oncocerida rather than in the Nautilida The name has been mis-spelt as Capriocornites...

early schemes. Both Shimansky and Kummel derive the Nautilida from the Oncocerida with either the Acleistoceratidae or Brevicoceratidae (Teichert 1988)...

Ellesmerocerida Orthocones: Endocerida, Orthocerida, Actinocerida Brevicones: Ascocerida, Oncocerida Earliest coiled cephalopods: Tarphycerida Spirulid?: Shimanskya...

Oncoceratidae is a family of nauatiloid cephalopods in the order Oncocerida established by Hyatt, 1884, that range from the Middle Ordovician to the Upper...

of North America, named by Foerste in 1934. Galtoceras is genus of the Oncocerida and of the oncocerid family Acleistoceratidae. As with the ascleistoceratids...

subclass Nautiloidea, comprising the phylogenetically related Nautilida, Oncocerida, and Tarphycerida. The superorder has its roots in the Bassleroceratidae...

8/21/12 Sepkoski J.J. List of Cephalopod Genera Walter c. Sweet, 1964 Nautiloidea - Oncocerida. Treatise on Invertebrate Paleontology, Part K, 1964. v t e...

Sepkoski J.J. List of Cephalopod Genera [1] Walter C. Sweet, 1964. Nautiloidea - Oncocerida. Treatise on Invertebrate Paleontology, Part K, 1964. v t e...

Spanioceras is an extinct genus of nautiloid cephalopods belonging to the order Oncocerida, which is thought to have given rise to the Nautilida which includes the...

Sepiida (C) Belemnoidea (D) Spirulida (E) Orthocerida (F) Nautilida (G) Oncocerida (H) Pseudorthocerida (I) Oegopsina (J) Bactritida. IC indicates the initial...

Zittelloceras is an extinct genus of nautiloids from the order Oncocerida which are among a large group of once diverse and numerous shelled cephalopods...

Blakeoceras is a nautiloid cephalopod from the Oncocerida family Nothoceratidae with a curved shell that lived in shallow seas from the Silurian to the...

Ellesmerocerida Orthocones: Endocerida, Orthocerida, Actinocerida Brevicones: Ascocerida, Oncocerida Earliest coiled cephalopods: Tarphycerida Spirulid?: Shimanskya...

Inversoceras is a genus of cephalopods in the order Oncocerida and the family Trimeroceratidae. These mollusks were fast-moving nektobenthic carnivores...

Ellesmerocerida Orthocones: Endocerida, Orthocerida, Actinocerida Brevicones: Ascocerida, Oncocerida Earliest coiled cephalopods: Tarphycerida Spirulid?: Shimanskya...

Slender Oncoceratidae are those in the family Oncoceratidae, (Nautiloidea, Oncocerida) which have slender, commonly curved, shells. Some like Oocerina are gently...

Ellesmerocerida Orthocones: Endocerida, Orthocerida, Actinocerida Brevicones: Ascocerida, Oncocerida Earliest coiled cephalopods: Tarphycerida Spirulid?: Shimanskya...

the ancestral Ellesmerocerida and the more advanced Tarphycerida and Oncocerida. The order, as originally defined, contains two families, the Bassleroceratidae...

probably from either Brevicoceratidae or Acleistoceratidae of the order Oncocerida early in the Devonian. Rutoceratidae comprise a family within the oncocerid...

the orders Oncocerida, Tarphycerida, and Nautilida. The family Nothoceratidae to which it belongs is one of 16 included in the Oncocerida. Barskov, I...