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Extinct order of molluscs
Plectronocerida is a primitive order from which subsequent cephalopod orders are ultimately derived. Plectronoceratids are known from the Upper Cambrian
Plectronocerida
Class of mollusks
ability to float) would have come later, followed by swimming in the Plectronocerida and eventually jet propulsion in more derived cephalopods. Possible
Cephalopod
Extinct subclass of cephalopod molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Ammonoidea
Extinct order of nautiloids
superorder Plectonoceratoidea, which she defined as containing the Plectronocerida, Ellesmerocerida and two orders introduced by Chen and Teichert in
Ellesmerocerida
Genus of mollusc
Phylum: Mollusca Class: Cephalopoda Subclass: Nautiloidea Order: †Plectronocerida Family: †Plectronoceridae Genus: †Plectronoceras Ulrich & Foerste,
Plectronoceras
Extinct superorder of nautiloids
Plectronoceratoidea contains several exclusively Cambrian cephalopod orders: Plectronocerida, Protactinocerida, and Yanhecerida. Under some classification schemes
Plectronoceratoidea
Extinct genus of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Belosepiella
Fossil order of cephalopods
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Bactritida
Origin and diversification of cephalopods through geologic time
float)[clarification needed] would have come later, followed by swimming in the Plectronocerida and eventually jet propulsion in more derived cephalopods. However
Evolution_of_cephalopods
Extinct genus of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Orthoceras
Extant subclass of cephalopods
that are phylogenetically related. They are: †Plectronoceratoidea = †Plectronocerida, †Protactinocerida, †Yanhecerida, and †Ellesmerocerida. †Endoceratoidea
Nautiloid
Genus of extinct cephalopod
Cephalopoda ? "Orthoconic camerate taxa" (e.g. †Tannuella) †Eoceras †Plectronocerida †Yanhecerida †Ellesmeroceratoidea †Endoceratoidea †Multiceratoidea
Eoceras
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Ascocerida
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Clymeniida
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Ammonitida
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Tarphycerida
Extinct order of molluscs
(mid-Stage 10) nautiloid cephalopods. They were similar to the more diverse Plectronocerida and Ellesmerocerida, with short shells, closely spaced septa, and diaphragms
Yanhecerida
Extinct order of molluscs
cephalopod orders. They were very similar to members of the order Plectronocerida in most respects. Like plectronocerids, their shells were compressed
Protactinocerida
Fossil order of cephalopods
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Endocerida
Order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Lituitida
Extinct group of squid-like animals
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Belemnoidea
Extinct family of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Orthoceratidae
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Prolecanitida
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Pseudorthocerida
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Actinocerida
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Ceratitida
Extinct order of molluscs
Discosorida is unknown, thought at one time to be directly from the Plectronocerida. Evolution within the order begins with the lower Middle Ordovician
Discosorida
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Aulacocerida
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Dissidocerida
Superfamily Pinnoidea Superfamily Plicatuloidea Superfamily Pterioidea Order Plectronocerida † Order Ellesmerocerida † Order Actinocerida † Order Pseudorthocerida
List_of_mollusc_orders
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Orthocerida
Extinct family of molluscs
Ellesmeroceratidae have their derivation in the Plectronoceratidae, order Plectronocerida, in Trempealeauan stage of the Late Cambrian from which time 13 genera
Ellesmeroceratidae
Order of cephalopods
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Nautilida
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Goniatite
Extinct family of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Belosaepiidae
Extinct family of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Carbactinoceratidae
Genus of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Shimanskya
Genus of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Belemnotheutis
Genus of molluscs
familial position is uncertain. It could be included in either the Plectronocerida, family Plectronoceratidae, or the Ellesmerocerida, family Ellesmeroceratidae
Shantungendoceras
Extinct genus of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Permoteuthis
Genus of molluscs (fossil)
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Ainoceras
Extinct genus of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Phragmoteuthis
Extinct order of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Phragmoteuthida
Index of articles associated with the same name
Chen, T.; Qi, D. (1979). "Late Cambrian cephalopods of North China. Plectronocerida, Protactinocerida (ord. nov.) and Yanhecerida (ord. nov.)". Acta Palaeontologica
Foliosum
Extinct genus of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Belosaepia
Extinct genus of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Diplobelus
Extinct genus of molluscs
Phylum: Mollusca Class: Cephalopoda Subclass: Nautiloidea Order: †Plectronocerida Family: †Plectronoceridae Genus: †Paraplectronoceras Chen & Qi, 1979
Paraplectronoceras
Family of nautiloidea
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Spyroceratidae
Extinct genus of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Turcutheca
Genus of molluscs (fossil)
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Adkinsia
Extinct genus of molluscs
Jun-yuan et al., 1979 Late Cambrian Cephalopods of North China -- Plectronocerida, Protactinocerida (Ord Nov) and Yanhecerida (Ord Nov) Archived 2011-07-07
Jiagouceras
Extinct family of molluscs
Belemnopsis Belemnotheutis Palaeozoic Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance
Pseudorthoceratidae
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