Quadragnostus

Taxobox
name = "Quadragnostus"
status = fossil
fossil_range = Cambriancite journal
last = Sepkoski| first = Jack| authorlink =| coauthors =| title = A compendium of fossil marine animal genera (Trilobita entry)| journal = Bulletins of American Paleontology| volume = 364| issue =| pages = p.560| publisher =| location =| date = 2002| url = http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=307&rank=class| doi =| id =| accessdate = 2008-01-12 ]
regnum = Animalia
phylum = Arthropoda
classis = Trilobita
ordo =
superfamilia =
genus = "Quadragnostus"

"Quadragnostus" is an extinct genus from a well known class of fossil marine arthropods, the trilobites. It lived during the Cambrian Period, which lasted from approximately 542 to 488 million years ago.

References