Definition of agnathan Agnathan
We found 4 definitions of agnathan from 3 different sources.
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What does agnathan mean?
WordNet
Noun |
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| agnathan - eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms | ||
| jawless vertebrate, jawless fish | ||
| aquatic vertebrate animal living wholly or chiefly in or on water | ||
| agnatha, superclass agnatha superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms | ||
| ostracoderm extinct fish-like jawless vertebrate having a heavily armored body; of the Paleozoic | ||
| heterostracan extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian | ||
| cephalaspid, osteostracan extinct jawless fish of the Devonian with armored head | ||
| anaspid extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian | ||
| conodont small (2 inches long) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone; late Cambrian to late Triassic; possible predecessor of the cyclostomes | ||
| cyclostome primitive aquatic vertebrate | ||
| lamper eel, lamprey, lamprey eel primitive eellike freshwater or anadromous cyclostome having round sucking mouth with a rasping tongue | ||
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Wiktionary 
- agnathan (Noun)
A member of the superclass Agnatha of jawless vertebrates. - agnathan (Adjective)
Belonging or pertaining to the superclass Agnatha, the jawless vertebrates.
Part of speech
🔤- agnathan, noun, singular of agnathans.
