| Cambrian | ||
| Paleozoic Era | Orsten Lagerstätte |
| Timescale | Tommotian Biota |
'Orsten' Research and Dieter Waloszek's View of Arthropod and Crustacean Phylogeny - includes info on arthropods from this important but less well-known late Cambrian Lagerstätten - best on the Web
