Encrinuridae is a family of trilobite within the order Phacopida that lived in what would be Africa, Asia, Australia, Europe, North America, and South America from the middle Ordovician to the early Devonian from 479 to 412.3 million years ago, existing for approximately 66.7 million years.[1]

Temporal range: Middle Ordovician–Early Devonian
Fossil of "Encrinurus egani" from the Racine Dolomite
Fossil of Encrinurus egani from the Racine Dolomite
Scientific classification e
Kingdom: Animalia
Phylum: Arthropoda
Class: Trilobita
Order: Phacopida
Family: Encrinuridae
Angelin, 1854


Encrinuridae was named by Angelin (1854). It was assigned to Phacopida by Edgecombe (1994).[2] It contains the following genera:[3]

Fossil distributionEdit

Fossils were found in strata dating from the Arenig to Lochkovian ages. Locations were varied and stretched from Florentine Valley, Tasmania to Xinjiang Province, China to Will County, Illinois.


  1. ^ PaleoBiology Database: Encrinuridae, basic info
  2. ^ G. D. Edgecombe. 1994. New Lower Silurian (Llandovery) encrinurine trilobites from the Mackenzie Mountains, Canada. Journal of Paleontology 68(4):824-837
  3. ^ S. M. Gon III. "Order Phacopida". Retrieved November 21, 2010.
  • Fossils (Smithsonian Handbooks) by David Ward
  • Trilobites by Riccardo Levi-Setti
  • Invertebrate Palaeontology and Evolution by E.N.K. Clarkson
  • Trilobites: Common Trilobites of North America (A NatureGuide book) by Jasper Burns

External linksEdit