ventriculite

Ven*tric"u*lite, n. Etym: [See Ventriculus.] (Paleon.) Defn: Any one of numerous species of siliceous fossil sponges belonging to Ventriculites and allied genera, characteristic of the Cretaceous period. Note: 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.

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