Furcalithus Explained

Furcalithus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the early part of the Arenig stage of the Ordovician Period, a faunal stage which lasted from approximately 478 to 471 million years ago.^[1]

Notes and References

1. Sepkoski . Jack . A compendium of fossil marine animal genera (Trilobita entry) . Bulletins of American Paleontology . 364 . 560 . 2002 . 2008-01-12 . dead . https://web.archive.org/web/20060905162524/http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=307&rank=class . 2006-09-05 .