Astylospongia

noun
Asty·lo·spon·gia | \ ¦āˌstīləˈspənjēə , -pän- \

Definition of Astylospongia 

: a genus of small pear-shaped siliceous fossil sponges including important index fossils occurring in Middle Silurian strata

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History and Etymology for Astylospongia

New Latin, from astyl-, astylo- (from a- entry 2 + styl-) + -spongia

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to deposit or conceal in a hiding place

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