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Noun1.anaspid - extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian
agnathan, jawless fish, jawless vertebrate - eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms
Anaspida, order Anaspida - extinct order of jawless vertebrates
References in periodicals archive ?
elegans shoal has preserved in a lens-like fish bed with rare ostracods and a few osteostracans (Tremataspis and Dartmuthia) occurring on the same bedding plane, while most of osteostracan and anaspid exoskeletons were buried under more agitated water conditions.
Bolau excavated in Himmiste between 1942 and 1944, thus later than the main material of osteostracans, an anaspid and Phlebolepis elegans were collected.