'Age of invertebrates' definitions:
Definition of 'Age of invertebrates'
- Invertebrate \In*ver"te*brate\, a. (Zool.)
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]
