About: Promissum   Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Promissum is an extinct genus of primitive chordate that lived in the Ordovician period, about 500 million years ago. A conodont, Promissum had a primitive mouth under its eyes with mineralized teeth, which are both typical for conodonts, and also a primitive backbone. It 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 in length. Well-preserved specimens were discovered in the Soom shale of South Africa in 1994.

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  • Promissum
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  • Promissum is an extinct genus of primitive chordate that lived in the Ordovician period, about 500 million years ago. A conodont, Promissum had a primitive mouth under its eyes with mineralized teeth, which are both typical for conodonts, and also a primitive backbone. It 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 in length. Well-preserved specimens were discovered in the Soom shale of South Africa in 1994.
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Row 1 info
  • Conodonta
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  • Class
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  • Order
Row 3 info
  • (Gabbot, Aldridge & Theron 1995)
  • Promissum
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  • Genus
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Name
  • Promissum
fossil range
abstract
  • Promissum is an extinct genus of primitive chordate that lived in the Ordovician period, about 500 million years ago. A conodont, Promissum had a primitive mouth under its eyes with mineralized teeth, which are both typical for conodonts, and also a primitive backbone. It 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 in length. Well-preserved specimens were discovered in the Soom shale of South Africa in 1994. Prosimmum was probably capable of maintaining a cruising speed, but not of bursts of speed.
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