Early Ordovician animals (Time series) - Wildlife in the Fossil sites
Classified animal and plant picture guide. Highlighting the link 
of species shows the images, and clicking the link shows Evolutionary Tree.
of species shows the images, and clicking the link shows Evolutionary Tree.
The Early Ordovician in Paleozoic spanned from 488 to 472 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.Ordovician, Early Ordovician, Middle Ordovician, Late Ordovician
The left map is the continents at Middle Ordovician provided by C. R. Scotese PALEOMAP Project.
| 488.3 Mya | ||||
| 488.3～449 Mya |  | Trilobite | Neseuretus | |
| 488.3～445.6 Mya |  | Sea bud | Echinosphaerites | |
| Cephalopod | Cameroceras (９m) | ||
| Trilobite | Remopleurides , Triarthrus | ||
| 488.3～443.7 Mya | | Cephalopod | Endoceras | |
| 488.3～418.7 Mya | First coral fossil? | |||
 | Coral | Catenipora (Great Dying①), Palaeophyllum (Great Dying①) | ||
| 488.3～359.2 Mya | | Coral | Streptelasma (Great Dying①) | |
| 488.3～345 Mya |  | Bivalve | Ctenodonta (Great Dying①②) | |
| 488.3～260.5 Mya | | Mollusc | Tentaculites (Great Dying①) | |
| 488.3～203.6 Mya | | Gastropoda | Maclurites (Great Dying①②③) | |
| 488.3～0 Mya | | Lamp shell | Lingula shells' (Great Dying①②③④⑤) | |
| 488 Mya | ||||
| 488～472 Mya | | Aplacophora | Strophomenia | |
| Cephalopod | Estonioceras | ||
| Trilobite | Opipeuterella | ||
| 488～443 Mya | | Trilobite | Neoasaphus | |
| 488～250 Mya | | Green algae | Receptaculites (Great Dying①②) | |
| 479 Mya | ||||
| 479～466 Mya |  | Jellyfish | Eoconularia | |
 | Jawless fish | Pircanchaspis | ||
| 479～460.5 Mya | | Jawless fish | Arandaspis | |
| 479～457.5 Mya | | Hemichordata | Isograptus | |
| Sea bud | Mimocystites | ||
| Trilobite | Reedocalymene | ||
| Jawless fish | Sacabambaspis | ||
| 479～449 Mya | | Cystoid | Hemicosmites | |
| Jawless fish | Anatolepis | ||
| 479～445.6 Mya | | Hemichordata | Dicranograptus | |
| Echinoderm | Cothurnocystis | ||
| Trilobite | Isotelus (７２cm) | ||
| 479～443.7 Mya | | Trilobite | Synhomalonotus | |
| 479～422.9 Mya | | Echinoderm | Hemicystites (Great Dying①) | |
| 479～418.1 Mya | | Hemichordata | Climacograptus (Great Dying①) | |
| 479～203.6 Mya | | Cephalopod | Michelinoceras , Orthoceras (Great Dying①②③) | |
| 479～0 Mya | | Bivalve | Nut clams' (Great Dying①②③④⑤) | |
| 476.8 Mya | ||||
| 476.8～460.5 Mya | | Jawless fish | Porophoraspis | |
| 476.8～457.5 Mya | | Trilobite | Colpocoryphe | |
| 478.6 Mya | ||||
| 478.6～466 Mya | | Gastropoda | Euomphalopsis | |
| Cephalopod | Cassinoceras | ||
| 478.6～443.7 Mya | | Cephalopod | Tarphyceras | |
| 478.6～199.6 Mya | | Gastropoda | Euomphalus (Great Dying①②③) | |