Definition of Acanthodii. Meaning of Acanthodii. Synonyms of Acanthodii

- Acanthodii or acanthodians is an extinct class of gnathostomes (jawed fishes). They are currently considered to represent a paraphyletic grade of various...
- (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...
- 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)...
- comprehensive listing of all genera that have ever been included in the subclass Acanthodii, excluding purely vernacular terms. The list includes all commonly accepted...
- This article contains a list of all of the classes and orders that are located in the Phylum Chordata. The subphyla Tunicata and Vertebrata are in the...
- 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...
- Tetanopsyrus is a genus of Acanthodii. There are two species of this genus that lived through the lower Devonian (Lochkovian), some 416 to 359 million...
- there are two classes of extinct armoured fishes, the Placodermi and the Acanthodii, both considered paraphyletic. Other ways of classifying the vertebrates...
- ? †Acanthodii...