- Euteleostomi
taxobox
name= Euteleostomes
fossil_range =Silurian -Recent
image_caption =
regnum =Animalia
phylum =Chordata
subphylum =Vertebrata
infraphylum =Gnathostomata
unranked_classis =Teleostomi
unranked_familia = EuteleostomiEuteleostomi is a successful
clade that includes more than 90% of the living species of vertebrates. Euteleostomes are also known as "bony vertebrates". Both major subgroups are successful today: Actinopterygii includes the majority of extant fish species, and Sarcopterygii includes thetetrapod s. This clade is sometimes called "Osteichthyes ", but since that name literally means "bony fish" and traditionally is aparaphyletic group that excludes tetrapods, the name Euteleostomi was coined as a substitute.Euteleostomes originally all had endochondral bone, fins with lepidotrichs, and jaws lined by maxillary, premaxillary, and dentary bones. Many of these characters have since been lost by descendant groups, however, such as lepidotrichs lost in
tetrapod s, and bone lost among the chondrostean fishes.Classification
Euteleostomi contains the following subgroups:
Actinopterygii
*Actinopteri
**Chondrostei
**Neopterygii
*Polypteriformes
**Polypteridae Sarcopterygii
*Coelacanthimorpha
**Coelacanthiformes
*Dipnoi
**Ceratodontimorpha
*Tetrapodomorpha
**Tetrapoda
***Amniota
***Amphibia External links
* [http://tolweb.org/Gnathostomata/14843.html Gnathostomata at the Tree of Life]
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