KingdomAnimaliaanimals
- Animalia: information (1)
- Animalia: pictures (19697)
- Animalia: specimens (7386)
- Animalia: sounds (709)
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- Eumetazoametazoans
- Bilateriabilaterally symmetrical animals
- Protostomiaprotostomes
- Protostomiaprotostomes
- Bilateriabilaterally symmetrical animals
- Annelids have been around for a very long time as you can see from one of the multiple pictures above.
- Fossils were found that were formed about 505 million years ago in the early Cambrian found in Australia.
- It was not until the early Ordovician that the first annelid jaws were found, that the crown-group appeared appeared somewhat later.
- The earliest good evidence for oligochaetes occurs in the Tertiary period, which began 65 million years ago, and it has been suggested that these animals evolved around the same time as flowering plants in the early Cretaceous, from 130 to 90 million years ago.