The Devonian Period Trilobites made a brief come back during this period, then populations dropped off again. Jawed fishes appear in the fossil record, and three substantial meteorite impacts recorded at the end of this time period, may have played a part in their demise. The end of this period also marks the end of the complex schizochoal eye system among trilobites. |
Paralejurus with Phacops Age: M. Devonian Location: Morocco |
Crotalocephalus gibbus Age: L. Devonian Location: Morocco |
Eldredgeia venustus Age: L. Devonian Location: Bolivia |
Psychopyge elegans Age: L. Devonian Location: Morocco |
Spinodontochile spinifera Age: L. Devonian Location: Morocco |
Bellacartwrightia Age: M. Devonian Location: New York |
Greenops widderensis Formation: Hamilton Age: M. Devonian Location: Canada |
Ceratarges sp. Age: L. Devonian Location: Morocco |
Kettneraspis sp. Age: L. Devonian Location: Morocco |
Cornuproetus cornutus cornutus Age: M. Devonian Location: Morocco |
Gerastos tuberculatus Age: M. Devonian Location: Morocco |
Phacops rana milleri Formation: Silica Age: M. Devonian Location: Ohio |
Phacops rana crassituberculata Formation: Silica Age: M. Devonian Location: Ohio |
Drotops megalomanicus Age: L Devonian Location: Morocco |
Drotops megalomanicus Age: L Devonian Location: Morocco |
Dicranurus hamatus elegantus Formation: Haragan Age: L. Devonian Location: Oklahoma |
Dicranurus monstrosus Age: L. Devonian Location: Morocco |
Devonian Trilobites 417-354 MYA |
