The Middle Devonian in Paleozoic spanned from
397 to
385 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.
Devonian,
Early Devonian, Middle Devonian,
Late DevonianThe right map is the continents at Early devonian provided by
C. R. Scotese PALEOMAP Project.
| 397 Mya |
| 397~385 Mya |  | Chordata | Palaeospondylus |
 | Jawless fish | Pituriaspis |
 | Armoured fish | Eastmanosteus |
| 397~359 Mya |  | Coelacanth | Diplocercides |
| 392 Mya |
| 392~386 Mya |  | Armoured fish | Pterichthyodes |
| 391.9 Mya |
| 391.9~388.1 Mya |  | Jawless fish | Pycnosteus , Psammolepis , Tartuosteus |
| 391.9~383.7 Mya |  | Sea bud | Pentremitidea , Eleutherocrinus |
| 391.9~359.2 Mya |  | Vascular plant | Barinophyton |
| 391.9~305 Mya |  | Lamp shell | Cyrtospirifer (Great Dying②) |
| 391.9~249.7 Mya | | First fern fossil |
 | Fern | Caulopteris (Great Dying②③) |
| 391.9~0 Mya |  | Snail | (Cypraecassis) (Great Dying②③④⑤) |
| 390 Mya |
| 390~380 Mya |  | Spiny shark | Cheiracanthus |
| 388.1 Mya |
| 388.1~383.7 Mya |  | Fern | Wattieza (8m), Hyenia |
 | Sea bud | Nucleocrinus , Placoblastus |
| 388.1~376.1 Mya |  | Fern | Pseudosporochnus |
 | Sea bud | Hyperoblastus |
| 388.1~359.2 Mya |  | Vascular plant | Callixylon , Aneurophyton |
| 388.1~345.3 Mya |  | Fern | Cladoxylon (Great Dying②) |
| 388.1~318.1 Mya |  | Vascular plant | Archaeopteris (Great Dying②) |
 | Fern | Rhacophyton (Great Dying②) |
| 388.1~284 Mya |  | Sea lily | Synbathocrinus (Great Dying②) |
| 388.1~258 Mya |  | Vascular plant | Sigillaria (Great Dying②) |
| 388.1~251 Mya |  | Gastropoda | Bellerophon (Great Dying②) |
| 388.1~203.6 Mya |  | Vascular plant | Lepidodendron (Great Dying②) |
| 388.1~70.6 Mya |  | Fern | Sphenopteris (Great Dying②③④⑤) |
| 388.1~0 Mya |  | Buckthorn | (Buckthorn) (Great Dying②③④⑤) |
 | Coral | (Fire corals) (Great Dying②③④⑤) |
 | Snail | (Natica) (Great Dying②③④⑤) |
 | Bivalve | (Lucina) (Great Dying②③④⑤) |