Echinacean
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 Any sea urchin of the superorder Echinacea.
"The echinaceans range from Late Triassic to present-day and are all regular echinoids, with more complex structures than occur in the diademataceans."
Example
More examples"The echinaceans range from Late Triassic to present-day and are all regular echinoids, with more complex structures than occur in the diademataceans."