Paraceraurus is a genus of trilobites that lived in the Ordovician period (485.4 to 443.4 Ma). Its remains have been found in China, Estonia, Sweden and North America.Paraceraurus in the Paleobiology Database These trilobites have a rounded and moderately convex cephalon. Glabella is convex or flattened, with a sub-rectangular outline. Thorax shows eleven segments.Fossilstock
Selected species Paraceraurus aculeatus Paraceraurus exsul Paraceraurus gladiator Paraceraurus ingricus Paraceraurus macrophthalmus Paraceraurus spinulosus
References
Trilobite: Eyewitness to Evolution by Richard Fortey Trilobites of the families Cheiruridae and Encrinuridae from Estonia.] Geoloogia Instituudi Uurimused [Trud Inst Geol Acad Sci Est SSR] Tallinn, 3 1958: 165–205, 210–212. [Zoological Record Volume 95] V. Klikushin, A. Evdokimov, A. Pilipyuk. Ordovician Trilobites of the St. Petersburg Region, Russia, 2009.