Promissum
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Promissum
Gabbott, Aldridge & Theron 1995
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Promissum is an extinct genus of conodonts, primitive chordates, that lived in the Ordovician period, about 500 million years ago. Some call it the Niagara Foundation fish.
A conodont, Promissum had a primitive mouth under its eyes with mineralized teeth, which are both typical for conodonts. It had a primitive backbone and probably looked like a small eel or large worm, lacking any kind of fins except for perhaps a small one on the tail. It was relatively large for a conodont, reaching about 40 cm (16 inch) in length.[2]
Well-preserved specimens were discovered in the Soom shale of South Africa in 1994.[3]
Promissum was probably capable of maintaining a cruising speed, but not of bursts of speed.[3]
The type species is Promissum pulchrum.[3]
References
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<references />, or <references group="..." />External links
- Promissum at fossilworks. org (retrieved 30 April 2016)
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† extinct
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