noun As·traeo·spon·gia \¦astrē(ˌ)ōˈspənjēə, -pän-\

Definition of Astraeospongia

  1. :  a genus of saucer-shaped Silurian fossil sponges having 6-rayed stellate spicules and important as Paleozoic index fossils

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Origin and Etymology of astraeospongia

New Latin, from astraeo- (from Greek astraios starry, from aster-, astēr star) + -spongia — more at star

Seen and Heard

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a brief usually trivial fact

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