Agnatha


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Related to Agnatha: Osteichthyes

Agnatha

aquatic, jawless, fish-like vertebrates characterized by fewer than two pairs of limbs (fins). The group is often given the status of a subphylum to separate it from other vertebrates with jaws which are included in the subphylum Gnathostomata. The Agnatha includes lampreys, hagfish, and the fossil OSTRACODERMI.
References in periodicals archive ?
Ploesoma truncatum# P (Levander, 1894) Polyarthra dolichoptera P Idelson,1925 Synchaeta stylata Wierzejski, 1893 P Trichocerca agnatha P Wulfert, 1939 Trichocerca bicristata P (Gosse, 1887) Trichocerca cf capucina * P (Wierzejski & Zacharias, 1893) Trichocerca chattoni (De P Beauchamp, 1907) Trichocerca cf pusilla# P (Jennings, 1903) Trichocerca similis (Wierzejski, P 1893) Trichocerca cf stylata# * P (Gosse,1851) Trichocerca sp.
1: Crustacea, 2: Osteichthyes, 3: Chondrichthyes, 4: Mollusca, 5: Agnatha.