Isotelus is a genus of asaphid trilobite from the middle and upper Ordovician period, fairly common in the Northeastern United States, northwest Manitoba, southwestern Quebec and southeastern Ontario. One species, Isotelus rex, is currently the world`s largest trilobite ever found as a complete fossil. ==Isotelus rex== A specimen of Isotelus rex,....
Found on
http://en.wikipedia.org/wiki/Isotelus
genus of trilobites (extinct arthropods) restricted to Europe and North America during the Ordovician Period (505 to 438 million years ago). ...
Found on
http://www.britannica.com/eb/a-z/i/45
No exact match found.
