Definition of Acanthodii. Meaning of Acanthodii. Synonyms of Acanthodii

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Definition of Acanthodii

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Meaning of Acanthodii from wikipedia

- Acanthodii or acanthodians is an extinct class of gnathostomes (jawed fishes). They are currently considered to represent a paraphyletic grade of various...
- lampreys) Gnathostomata or jawed vertebrates, which include: †Placodermi †Acanthodii Chondrichthyes or cartilaginous fish, (sharks, rays and ratfish) Osteichthyes...
- (chimaeras and extinct relatives) class Placodermi (armoured fish) † class Acanthodii ("spiny sharks", sometimes classified under Actinopterygii) † Superclass...
- extinct (armored gnathostomes) └Eugnathostomata (true jawed vertebrates) ├─Acanthodii (stem cartilaginous fish) └─Chondrichthyes (true cartilaginous fish) ├─Holocephali...
- synapomorphies can ultimately be found in several chondrichthyan groups. Acanthodii Euteleostomi Zhu M, Yu X, Ahlberg PE, Choo B, Lu J, Qiao T, Qu Q, Zhao...
- Females attain a larger size than males. The largest of the now-extinct Acanthodii was Xylacanthus grandis, an ischnacanthiform based on a ~35 cm (14 in)...
- gnathostomes) class Chondrichthyes (cartilaginous fish; 900+ species) classAcanthodii (Paleozoic "spiny sharks"; paraphyletic in relation to Chondrichthyes)...
- fish known as placoderms, which evolved from the ostracoderms; and the Acanthodii (or spiny sharks). The jawed fish that are still extant in modern days...
- This article contains a list of all of the classes and orders that are located in the Phylum Chordata. Order Amphioxiformes Genus PikaiaOrder Enterogona...
- ? †Acanthodii...