1. From 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites
   - Devonian period, Age of Fishes

Derived forms: Devonians

Type of: geological period, period

Part of: Palaeozoic [Brit, Cdn], Paleozoic, Paleozoic era

Encyclopedia: Devonian

• slackening
• slacker
• slacking
• slackly
• slackness
• slacks
• slag
• slag code
• slag off
• slagheap
• slain
• slake
• slaked
• slaked lime
• slalom
• slam
• slam dance
• slam dancing
• slam on
• slam-bang
• slam-dunk
• slammer
• slander
• slanderer
• unbalconied