Bathyuriscus

Bathyuriscus is an extinct genus of Cambrian trilobite. It was a nektobenthic predatory carnivore. The genus Bathyuriscus is endemic to the shallow seas that surrounded Laurentia. Its major characteristics are a large forward-reaching glabella, pointed pleurae or pleurae with very short spines, and a medium pygidium with well-impressed furrows. Co...
Found on http://en.wikipedia.org/wiki/Bathyuriscus

Bathyuriscus

genus of trilobites (extinct arthropods) that provide a useful index fossil for the Middle Cambrian epoch of North America (520 to 512 million years ...
Found on http://www.britannica.com/eb/a-z/b/31
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