Jamoytius kerwoodi
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Extinct (fossil)
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| 'Jamoytius kerwoodi' | |
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| Type | jawless fish |
| Length | 10.8 in (27 cm) |
| Movement | swimming |
| Age | 420 million years ago |
| Diet | detrius-feeder |
| Environment | ocean |
| Distribution | Scotland |
Jamoytius kerwoodi was an extinct species of primitive jawless fish that lived in the Silurian period.
It was a somewhat eel-like creature with several long fins running along its body, making it a good swimmer. J. kerwoodi resembled a lamprey, especially with its rounded mouth and elongated body. However, as it had no teeth or teeth-like structures in its mouth, it was not carnivorous like its distant modern-day relative, the lamprey. More likely, it was a filter-feeder or a detrius-feeder (possibly in the manner of larval lampreys).
[edit] References
Long, John A. The Rise of Fishes: 500 Million Years of Evolution Baltimore: The Johns Hopkins University Press, 1996. ISBN 0-8018-5438-5
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