Found 1 items, similar to Age of invertebrates.
English → English (gcide) Definition: Age of invertebrates Invertebrate \In*ver"te*brate\, a. (Zo["o]l.) Destitute of a backbone; having no vertebr[ae]; of or pertaining to the Invertebrata. -- n. One of the Invertebrata. [1913 Webster] Age of invertebrates. See Age, and Silurian. [1913 Webster]