Kettneraspis angelini Age: Silurian Location: Sweden |
Dalmanites limulurus Formation: Rochester shale Age: Upper Silurian Location: New York |
Gravicalymene celebra Formation: Springfield Age: L. Silurian Location: Ohio |
Calymene clavicula Formation: Henryhouse Location: Oklahoma |
Leonaspis aracana Location: Bolivia |
Fragiscutum glebalis Formation: Henryhouse Age: U. Silurian Location: Oklahoma |
Sinespinaspis markhami Age: L. Silurian Location: Australia |
Bumastus sp. Age: L. Silurian Location: Indiana |
Glyptambon verrucosus Formation: Waldron Shale Age: Location: Indiana |
Kainops guttulus Formation: Henryhouse Age: U. Silurian Location: Oklahoma |
The Silurian Period During the Silurian period trilobite genera and populations decreased and remained at an all time low. |
Silurian Trilobites 440-417 MYA |
