Definition of Agnatha. Meaning of Agnatha. Synonyms of Agnatha

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Definition of Agnatha

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Meaning of Agnatha from wikipedia

- Agnatha (/ˈæɡnəθə, æɡˈneɪθə/; from Ancient Gr**** ἀ- (a-) 'without' and γνάθος (gnáthos) 'jaws') or jawless fish is a paraphyletic infraphylum of animals...
- and various classes of fish and reptiles. The fish include the jawless Agnatha, and the jawed Gnathostomata. The jawed fish include both the cartilaginous...
- taxonomy. Traditional classification divides fish into three extant classes (Agnatha, Chondrichthyes, and Osteichthyes), and with extinct forms sometimes classified...
- (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 35,800 species of fish had been described as of...
- Fish vary greatly in size. The extant whale shark and basking shark exceed all other fish by a considerable margin in weight and length. With the extinct...
- first craniates and vertebrates. The first fish lineages belong to the Agnatha, or jawless fish. Early examples include Haikouichthys. During the late...
- with Metaspriggina and the other craniates (both gnathostomatans and Agnatha) grouped with Branchiostoma and the cephalochordates, and Pikaia out on...
- 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...
- cartilaginous fishes or primitive vertebrates. Cope (1889) coined the name Agnatha ("jawless") for a group that included the cyclostomes and a number of fossil...
- Examples of infraphyla include the Mycetozoa, the Gnathostomata and the Agnatha. Hutchinson 1973. Hutchinson, John (1973). The families of flowering plants...