rudist
Noun
Meaning
rudist (plural rudists)
(paleontology) Any of many box-, tube- or ring-shaped marine heterodont bivalves from the Jurassic and Cretaceous periods. [from 19th c.]
Noun
rudist (plural rudists)
(paleontology) Any of many box-, tube- or ring-shaped marine heterodont bivalves from the Jurassic and Cretaceous periods. [from 19th c.]