Protacanthopterygii
Sign in to saveProtacanthopterygii is a superorder of ray-finned fish. They inhabit both marine and freshwater habitats. They appear to have evolved in the Cretaceous or perhaps late Jurassic, originating probably roughly 150 million years ago; fossils of them and the closely related Otocephala are known from throughout the Cretaceous.
In the Vinony graph
Within Vinony's link graph, Protacanthopterygii is referenced by 31 other articles, and connects out to Lepidogalaxias salamandroides, Ateleopodidae and fish migration.
Vinony files it under Euteleostei, Extant Late Jurassic first appearances and Fish superorders.
Its subject is documented across 26 Wikipedia language editions.
Species
原棘鳍亚群（学名：Protacanthopterygii）或原棘鳍总目是辐鳍鱼纲的一个演化支，包括了鲑形目与其近亲，本类鱼类的棘鳍不发达，有的只有弱棘。
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Wikidata facts
Show 5 more facts
- taxon common name
- 原棘鳍总目
- taxon rank
- superorder
- Commons category
- Euteleostei
- taxon name
- Protacanthopterygii
- topic's main category
- Category:Protacanthopterygii
Sources (1)
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Encyclopedic overview
4 sectionsContents
- Characteristics and origin
- Systematics
- Phylogeny
- References
Protacanthopterygii is a superorder of ray-finned fish. They inhabit both marine and freshwater habitats. They appear to have evolved in the Cretaceous or perhaps late Jurassic, originating probably roughly 150 million years ago; fossils of them and the closely related Otocephala are known from throughout the Cretaceous.
==Characteristics and origin== The Protacanthopterygii contain a number of moderately advanced teleosts. Anatomical and other traits commonly found in this superorder are: more than 24 vertebrae, epicentral cartilages, one supraorbital bone, and a mesocoracoid, an adipose fin, and (often prominent) glossohyal teeth. However, they usually lack a protrusible upper jaw, a gular plate, and proximal forking of the intermuscular bones. Most members of this taxon are rather specialized mid-sized to larger predators of smaller animals.
Excerpted from Wikipedia’s “Protacanthopterygii” article, available under the CC BY-SA 4.0 licence.