NOUN
- extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian
How To Use anaspid In A Sentence
- Among the Anaspidea, numerous species of the genus Aplysia, such as A. brasiliana, are capable of swimming by undulating their parapodia.
- However, the gill arches seem to be jointed and they appear to be closely related to paired fin-folds on the anaspid model.
- In the Anaspidea there is a tendency for parapodia to enlarge and, together with the mantle, to enclose the fragile shell (with increasingly reduced and involute spire).
