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Webster 1913 Edition

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Noun.

[See

(Paleon.)

Any one of numerous species of siliceous fossil sponges belonging to

Ventriculites

and allied genera, characteristic of the Cretaceous period.

☞ Many of them were shaped like vases, others like mushrooms. They belong to the hexactinellids, and are allied to the Venus’s basket of modern seas.

ventriculite ‎(plural ventriculites)

(paleontology) Any of numerous species of siliceous fossil sponges belonging to Ventriculites and allied genera.