Crepicephalus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period. == Reassigned species == Some species, previously described as Crepicephalus have since been moved to other genera. ...
Found on
http://en.wikipedia.org/wiki/Crepicephalus
genus of trilobites (extinct arthropods) useful as an index fossil for Upper Cambrian rocks in North America (dating 512 to 505 million years ago); ...
Found on
http://www.britannica.com/eb/a-z/c/157
No exact match found.
