Middle Cambrian animals (Time series) - Wildlife in the Fossil sites
Classified animal and plant picture guide. Clicking the Organism name 
shows the images, and pointing the Organism name shows the tooltip with three links at the left-top corner.
shows the images, and pointing the Organism name shows the tooltip with three links at the left-top corner.The middle Cambrian in Paleozoic spanned from 513 to 496 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 time range is shown in the Geological Time Table. The followings are a part of the Evolutionary Tree.
Combrian, Early Combrian, Middle Cambrian, Late Combrian
The right map is the continents at Late Combrian provided by C. R. Scotese PALEOMAP Project.
Combrian, Early Combrian, Middle Cambrian, Late Combrian
The right map is the continents at Late Combrian provided by C. R. Scotese PALEOMAP Project.
| 513 Mya | ||||
| 513～501 Mya |  | Unknown animal | Echmatocrinus | |
| Sponge | Vauxia | ||
| Comb jelly | Ctenorhabdotus | ||
| Penis worms | Ancalagon , Louisella, Fieldia | ||
| Ringed worm | Peronochaeta, Insolicorypha , Burgessochaeta | ||
| Lobopodia | Aysheaia | ||
| Echinoderm | Castericystis , Trochocystites, Gyrocystis, Ctenocystis | ||
| Edrioasteroid | Totiglobus, Stromatocystites, Cambraster, Walcottidiscus | ||
| Sea bud | Akadocrinus | ||
| Eocrinoidea | Lyracystis, Sinoeocrinus | ||
| First chordata fossil | ||||
| Chordata | Pikaia | ||
| Sea anemone | Mackenzia | ||
| Mollusc | Odontogriphus | ||
| Anomalocaridid | Laggania , Hurdia (５０cm), Opabinia | ||
| Arachnomorpha | Habelia , Helmetia , Burgessia , Sarotrocercus , Alalcomenaeus , Yohoia , Perspicaris , Forfexicaris | ||
 | Trilobite | Marrella , Basocephalus, Dorypygina, Lejopyge | ||
| Chelicerata | Sanctacaris | ||
| Crustacean | Plenocaris | ||
| 513～490 Mya | | Penis worms | Ottoia | |
| Trilobite | Emeraldella | ||
| 513～488.3 Mya | | Trilobite | Elrathia , Asaphiscus , Connagnostus, Kormagnostus, Proceratopyge | |
| 513～449.5 Mya | | Hemichordata | Chaunograptus | |
| 507 Mya | ||||
| 507～488.3 Mya | | Trilobite | Ptychagnostus | |
| 505 Mya | ||||
| 505 Mya | | Cephalopod | Nectocaris | |
| 504 Mya | ||||
| 504～503 Mya | | Trilobite | Clavagnostus, Paraclavagnostus, Lisogoragnostus | |
| 501 Mya | ||||
| 501～490 Mya | | Cephalopod | Plectronoceras | |
 | Horseshoe crab | Aglaspis | ||
| 501～488.3 Mya | | Horseshoe crab | Beckwithia | |
| 501～479 Mya | | Chiton | Matthevia | |
| 501～466 Mya | | Echinoderm | Minervaecystis | |
| 501～457.5 Mya | | Hemichordata | Nemagraptus | |
| 501～445.6 Mya | | Hemichordata | Glossograptus | |
| Monoplacophora | Archinacella | ||
| 501～412.3 Mya | | Chiton | Chelodes (Great Dying①) | |
| 501～388.1 Mya | | Hemichordata | Dendrograptus (Great Dying①), Desmograptus (Great Dying①) | |
| 501～383.7 Mya | | Hemichordata | Dictyonema (Great Dying①) | |
| 501～345 Mya | | Hemichordata | Callograptus (Great Dying①②) | |