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. These trilobites have a rounded and moderately convex cephalon. Glabella is convex or flattened, with a sub-rectangular outline. Thorax shows eleven segments.

Selected species

  • Paraceraurus aculeatus
  • Paraceraurus exsul
  • Paraceraurus gladiator
  • Paraceraurus ingricus
  • Paraceraurus macrophthalmus
  • Paraceraurus spinulosus
  • 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.