Phylum Chordata | Class †Conodonta Species P. pulchrum Rank Genus | |
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Similar Jamoytius, Pseudopetalichthyida, Arandaspis prionotolepis, Perleidus, Pituriaspida | ||
Installing the promissum swift framework
Promissum is an extinct genus of conodonts, primitive chordates, that lived during the Upper Ordovician period.
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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.
Well-preserved specimens were discovered in the Soom shale of South Africa in 1994.
Promissum was probably capable of maintaining a cruising speed, but not of bursts of speed.
Promissum manuel alejandro gonz lez cruz ct
References
Promissum Wikipedia(Text) CC BY-SA