The Late Silurian in Paleozoic spanned from
423 to
418.1 millon years ago. The explanation in brackets is the ages they lived in extinct species. Note that
Mya is million years ago. For example, "48.6~40.4 Mya" shows a range between 48.6 and 40.4 million years ago. The italic and bold figures, e.g.
488, show out of the range. The time range is shown in the
Geological Time Table. The followings are a part of the Evolutionary Tree.
Silurian,
Early Silurian,
Middle Silurian, Late Silurian
The right map is the continents at Middle Silurian provided by
C. R. Scotese PALEOMAP Project.
| 422.9 Mya |
| 422.9~418.7 Mya |  | Trilobite | Linguocalymene , Metacalymene |
 | Sea scorpion | Rhinocarcinosoma, Tylopterella , Melbournopterus |
 | Crustacean | Ainiktozoon |
 | Jawless fish | Lasanius , Longodus |
| First Lobe-finned fish fossil? |
 | Tetrapodomorpha | Guiyu |
| 422.9~416 Mya |  | Jawless fish | Dartmuthia |
| 422.9~412.3 Mya |  | Sea scorpion | Acutiramus |
| 422.9~391.9 Mya |  | Vascular plant | Salopella , Baragwanathia (Primitive land plant) |
| 422.9~376.1 Mya |  | Sea lily | Codiacrinus |
 | Trilobite | Crotalocephalus |
| 422.9~345.3 Mya |  | Coral | Pleurodictyum (Great Dying②) |
| 422.9~251 Mya |  | Lamp shell | Syringothyris (Great Dying②③) |
| 422.9~171.6 Mya |  | Lamp shell | Spiriferina (Great Dying②③④) |
| 422.9~0 Mya |  | Tusk shell | (Dentalium) (Great Dying②③④⑤) |
| 421.3 Mya |
| 421.3~418.7 Mya |  | Trilobite | Cerauroides |
| 421.3~418.1 Mya |  | Sea scorpion | Salteropterus |
| First Ray-finned fish fossil |
 | Ray-finned fish | Andreolepis |
| 421.3~409.1 Mya | | First Spiny shark fossil |
 | Spiny shark | Ischnacanthus |
| 421.3~391.9 Mya |  | Spiny shark | Nostolepis |
| 421.3~383.7 Mya |  | Vascular plant | Zosterophyllum |
| 421.3~0 Mya |  | Bivalve | (Solemya) (Great Dying②③④⑤) |
| 420 Mya |
| 420~400 Mya |  | Non-vascular plant | Horneophytopsida |
| 418.7 Mya |
| 418.7~418.1 Mya |  | Horseshoe crab | Limuloides , Pseudoniscus , Bunaia |
 | Sea scorpion | Brachyopterus |
 | Jawless fish | Tolypelepis |
| 418.7~412.3 Mya |  | Green algae | Parka , Tortilicaulis |
 | Sea lily | Scyphocrinites |
 | Sea scorpion | Stylonurus |
 | Spiny shark | Climatius |
| 418.7~409.1 Mya |  | Non-vascular plant | Nematothallus |
 | Sea scorpion | Tarsopterella |
| 418.7~388.1 Mya |  | Lamp shell | Mutationella |
| 418.7~376.1 Mya |  | Coral | Aulocystis |
| 418.7~0 Mya |  | Bivalve | (Mytilus) (Great Dying②③④⑤) |