Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
Devonian | Yes | No | No | No |
geological period | Yes | No | No | No |
Devonian (noun) | geological period (noun) |
---|---|
the period from 405 million to 345 million years ago; characterized by preponderance of fishes and appearance of amphibians and ammonites | a unit of geological time during which a system of rocks formed |