pleosponge

noun ple·o·sponge \ ˈplēəˌspənj \

Definition of pleosponge

:any of various Lower and Middle Cambrian calcareous, cylindrical or cup-shaped, double-walled, porous fossils that may be the remains of sponges or primordial precursors of the true corals

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Origin and Etymology of pleosponge

New Latin Pleospongia, from pleio- + -spongia


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to suppress quietly or indirectly

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