Chaoaspis

Chaoaspis Temporal range: Early Botomian[1]
Conservation status
Fossil
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Trilobita
Genus:	Chaoaspis

Chaoaspis is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the early part of the Botomian stage^[1], which lasted from approximately 524 to 518.5 million years ago. This faunal stage was part of the Cambrian Period.

References

1. ^ ^{a b} Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Trilobita entry)". Bulletins of American Paleontology 364: p.560. http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=307&rank=class. Retrieved 2008-01-12.