nautiloid

/nawt-l-oid/US // ˈnɔt lˌɔɪd //UK // (ˈnɔːtɪˌlɔɪd) //

鹦鹉螺类,鹦鹉螺,鹦鹉螺类动物,鹦鹉类

Definitions

n.名词 noun

1
- : a mollusk of the subclass Nautiloidea, including nautiluses and many fossil species that were abundant in the Ordovician and Silurian periods.

adj.形容词 adjective

Cephalic shield pointed behind; shell internal, chiefly membranous, with calcified nucleus, nautiloid; parapodia forming fins.
The remarkable group of the Trilobites had precedence in order of time of the Nautiloid shell-fishes.
He referred also to the nautiloid shell of the larva falling to one side.