Invertebrates To Fish
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| The Invertebrates → Fish Evolutionary Series | |||||
|---|---|---|---|---|---|
| Appearance | Taxa | Relationships | Status | Description | Image |
| ??? Ma |
Genus:
|
Lancelet-like in appearance. Oldest known ancestor of modern vertebrates
Vertebrate characters
|
|||
| ??? Ma |
Class:
|
Had fin rays, chevron-shaped muscles and a notochord. | |||
| 530 Ma |
Genus:
|
Appears to have a cranium, thus being a craniat. | |||
| 480 to 470 Ma |
Genus:
|
Jawless fish | A well armoured jawless fish, resembling a large tadpole in life | ||
| ??? Ma |
Genus:
|
An anaspid, ancestral to the jawed vertebrates, | An unarmored, scaly jawless fish | ||
| 419 Ma |
Genus:
|
Oldest known bony fish | |||
Read more about this topic: List Of Transitional Fossils
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—Anne Sexton (1928–1974)