Triarthrus
From Wikipedia, the free encyclopedia
| Triarthrus Temporal range: Upper Ordovician |
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| T. eatoni fossil | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Trilobita |
| Order: | Ptychopariida |
| Suborder: | Olenina |
| Family: | Olenidae |
| Genus: | Triarthrus Green, 1832 |
| Type species | |
| T. becki Green, 1832 |
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Triarthrus is an Upper Ordovician trilobite found in New York, Ohio, Kentucky, and Indiana, eastern and northern Canada, and Scandinavia. It is the last of the Olenid trilobites, a group which flourished in the Cambrian period. T. eatoni have been found in the Beecher's Trilobite Bed, Rome, New York area with soft body parts preserved in iron pyrite. Pyrite preservation has given scientists a rare opportunity to examine the gills, walking legs, antennae and digestive systems of trilobites, which are rarely preserved.[1][2][3] Triarthrus is therefore commonly used in science texts to illustrate trilobite physiology.
[edit] Sources
[edit] Further reading
- Thomas E. Whiteley, Gerald J. Kloc, and Carlton E. Brett Trilobites of New York. Cornell University Press, 2002. 456 pages. ISBN 978-0801439698
[edit] References
- ^ Beecher, C.E. (1893a). "A larval form of Triarthrus". American Journal of Science 46: 361–362.
- ^ Beecher, C.E. (1893b). "On the thoracic legs of Triarthrus". American Journal of Science 46: 467–470.
- ^ Beecher, C.E. (1902). "The ventral integument of trilobites". American Journal of Science, series 4 13: 165–173.
