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- Holocephali abstract "The subclass Holocephali ("complete heads") is a taxon of cartilaginous fish, of which the order Chimaeriformes is the only surviving group.The extensive fossil record of the Holocephali starts during the Devonian period. However, most fossils are teeth, and the body forms of numerous species are not known, or at best, poorly understood. Some experts further group the orders Petalodontiformes, Iniopterygiformes, and Eugeneodontida into the taxon "Paraselachimorpha", and treat it as a sister group to Chimaeriformes. However, as almost all members of Paraselachimorpha are poorly understood, most experts suspect this taxon to be either paraphyletic or a wastebasket taxon. It includes the rat fishes (e.g., Chimaera), rabbit fishes (e.g., Hydrolagus) and elephant fishes (Callorhynchus). They preserve today some features of elasmobranch life in Paleaozoic times, though in other respects they are aberrant. They live close to the bottom and feed on molluscs and other invertebrates. The tail is long and thin and they move by sweeping movements of the large pectoral fins. The erectile spine in front of the dorsal fin is sometimes poisonous. There is no stomach (that is, the gut is simplified and the 'stomach' is merged with the intestine), and the mouth is a small aperture surrounded by lips, giving the head a parrot-like appearance.".
- Holocephali class Chondrichthyes.
- Holocephali kingdom Animal.
- Holocephali phylum Chordate.
- Holocephali thumbnail Hydrolagus_colliei.jpg?width=300.
- Holocephali wikiPageID "946334".
- Holocephali wikiPageRevisionID "602344917".
- Holocephali classis Chondrichthyes.
- Holocephali fossilRange "Devonian–Recent".
- Holocephali hasPhotoCollection Holocephali.
- Holocephali imageCaption "Hydrolagus colliei".
- Holocephali name "Holocephali".
- Holocephali phylum Chordate.
- Holocephali regnum "Animalia".
- Holocephali subclassis "Holocephali".
- Holocephali subdivision "* Chimaeriformes * †Petalodontiformes * †Iniopterygiformes * †Eugeneodontida".
- Holocephali subdivisionRanks "Orders".
- Holocephali subject Category:Holocephali.
- Holocephali type Animal.
- Holocephali type Eukaryote.
- Holocephali type Fish.
- Holocephali type Species.
- Holocephali type Fish.
- Holocephali type Organism.
- Holocephali comment "The subclass Holocephali ("complete heads") is a taxon of cartilaginous fish, of which the order Chimaeriformes is the only surviving group.The extensive fossil record of the Holocephali starts during the Devonian period. However, most fossils are teeth, and the body forms of numerous species are not known, or at best, poorly understood.".
- Holocephali label "Holocephali".
- Holocephali label "Holocephali".
- Holocephali label "Holocephali".
- Holocephali label "Holocephali".
- Holocephali label "Holocephali".
- Holocephali label "Holocephali".
- Holocephali label "Holocephali".
- Holocephali label "Zrosłogłowe".
- Holocephali label "Цельноголовые".
- Holocephali label "كاملات الرؤوس".
- Holocephali label "全头类".
- Holocephali label "全頭亜綱".
- Holocephali sameAs Chiméry.
- Holocephali sameAs Holocephali.
- Holocephali sameAs Holocephali.
- Holocephali sameAs Holozefalo.
- Holocephali sameAs Holocephali.
- Holocephali sameAs Holocephali.
- Holocephali sameAs 全頭亜綱.
- Holocephali sameAs 전두어아강.
- Holocephali sameAs Holocephali.
- Holocephali sameAs Zrosłogłowe.
- Holocephali sameAs Holocephali.
- Holocephali sameAs m.03gq397.
- Holocephali sameAs Q149104.
- Holocephali sameAs Q149104.
- Holocephali wasDerivedFrom Holocephali?oldid=602344917.
- Holocephali depiction Hydrolagus_colliei.jpg.
- Holocephali isPrimaryTopicOf Holocephali.
- Holocephali name "Holocephali".
