Temporal range: Early Carboniferous–Early Triassic
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Protocanites, a Tournaisian prolecanitoid in the family Prolecanitidae
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
†Ammonoidea
Order:
†Prolecanitida Miller & Furnish, 1954
Superfamilies
Prolecanitoidea
Medlicottioidea
Prolecanitida is an order of extinct ammonoid cephalopods, the major Late Paleozoic group of ammonoids alongside the order Goniatitida. Prolecanitids had narrow shells, discoidal (disc-shaped) to thinly lenticular (lens-shaped). They retained a retrochoanitic siphuncle, a simple form with septal necks extending backwards. As is typical for ammonoids, the siphuncle sits along the ventral margin of the shell.
Prolecanitids form a relatively small and stable order within the Ammonoidea, with 43 named genera and about 1250 species. They were a long-ranging lineage, surviving for about 108 m.y. stretching from the Devonian–Carboniferous boundary to the Early Triassic. Although not as diverse as their goniatitid contemporaries, the Prolecanatida provided the stock from which all later Mesozoic ammonoids were derived.
Most prolecanitids had goniatitic sutures. The sutures start at a narrow ventral lobe, which can range from undivided to tridentate (three-pointed). The saddles are generally rounded, with the first umbilical (or second lateral) saddle often the largest in the suture line. The lobes are usually pointed, though members of the family Daraelitidae acquire a few finely serrated lobes (as characteristic for ceratitic sutures). The first lateral saddle is proportionally small, though its corresponding lateral lobe is broad and typically bifid (two-pointed).
Prolecanitida is an order of extinct ammonoid cephalopods, the major Late Paleozoic group of ammonoids alongside the order Goniatitida. Prolecanitids...
Paleozoic ammonoids (orders Agoniatitida, Clymeniida, Goniatitida, and Prolecanitida). Ceratitic – lobes have subdivided tips, giving them a saw-toothed...
Members of the order Prolecanitida were less diverse. The Ceratitida originated from the family Daraelitidae within Prolecanitida during the mid-Permian...
Order Dissidocerida † Order Bactritida † Order Goniatitida † Order Prolecanitida † Order Ceratitida † Order Ammonitida † Order Belemnoidea † Order Aulacocerida...
would see the decline of the Paleozoic ammonoid orders (Goniatitida and Prolecanitida) and the rise of the order Ceratitida, especially within the superfamily...
Medlicottiidae is a family of ammonoid cephalopods belonging to the Prolecanitida, known from the Upper Carboniferous (Pennsylvanian) to the Early Triassic...
Prolecanitoidea is a taxonomic superfamily of ammonoids in the order Prolecanitida. Prolecanitoidea is one of two superfamilies in the order, along with...
Prolecanitidae is a family of ammonites in the order Prolecanitida, with 10 genera. Genera placed by Fossilworks. Becanites Korn, 1997 Cantabricanites...
suture lines. Their origin is most likely in the Daraelitidae of the Prolecanitida and they are the apparent source of the Xenodiscidae. All together they...
The Daraelitidae form a family in the ammonoid order Prolecanitida from the Upper Mississippian - Middle Permian characterized by discoidal shells with...
The Medlicottioidea is one of two superfamilies that make up the Prolecanitida, the other being the Prolecanitoidea. The Medlicottioidea are recognized...
the Medlicottiidae, a family of ammonoid cephalopods included in the Prolecanitida. The Uddenitinae, proposed by Miller and Furnish, and known from the...
Invertebrate Paleontology, Part L, Revised: Mollusca 4, Volume 2: Carboniferous and Permian Ammonoidea (Goniatitida and Prolecanitida) pp1–258. v t e...
Paleontology, Part L, Revised: Mollusca 4, Volume 2: Carboniferous and Permian Ammonoidea (Goniatitida and Prolecanitida). pp. 1–258. ISBN 9781891276613. v t e...
family in the Melicottiaceae, a superfamily of prolecanitids (order Prolecanitida). Sageceras, type genus of the Sageceratidae, is described as having...
superfamily Xenodiscoidea, are derived from the Daraelitidae, a family in the Prolecanitida (ibid). In turn, the Xenodiscidae provided the root stock for the subsequent...
umbilici. The Prolobitidae have been considered the likely ancestors for Prolecanitida. Miller, Furnish, and Schindewolf,1957; Paleozoic Ammonoidea, Suborder...
Permian (probably Artinskian) Rodionovsky Formation Russia A member of Prolecanitida belonging to the family Pronoritidae, a species of Neopronorites. Nodopericyclus...
the Medlicottiidae, a family of ammonoid cephalopods included in the Prolecanitida, characterized by having discoidal to thinly lenticular shells with...
Michiganites is a member of the ammonoid order Prolecanitida, named by Ruzhencev in 1962, which comes from the Meramacian stage of Mississippian Period...
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