''Encrinuroides'' is a genus of

trilobite Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the At ...

s in the order

Phacopida Phacopida ("lens-face") is an order of trilobites that lived from the Late Cambrian to the Late Devonian. It is made up of a morphologically diverse assemblage of taxa in three related suborders. Characteristics Phacopida had 8 to 19 thorac ...

, that existed during the upper

Ordovician The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start ...

in what is now

Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...

. It was described by Reed in 1931, and the

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

is ''Encrinuroides sexcostata'', which was originally described under the genus ''

Cybele Cybele ( ; Phrygian: ''Matar Kubileya/Kubeleya'' "Kubileya/Kubeleya Mother", perhaps "Mountain Mother"; Lydian ''Kuvava''; el, Κυβέλη ''Kybele'', ''Kybebe'', ''Kybelis'') is an Anatolian mother goddess; she may have a possible forer ...

'' by Salter in 1848. It also contains the species, ''Encrinuroides enshiensis'', ''Encrinuroides insularis'', and ''Encrinuroides rarus''. The type locality was in the Sholeshook Limestone Formation.Available Generic Names for Trilobites
P.A. Jell and J.M. Adrain.

Species

* ''Encrinuroides sexcostata'' (Salter, 1848) * ''Encrinuroides enshiensis'' * ''Encrinuroides rarus'' (Walcott, 1877) - Originally assigned to ''

Ceraurus ''Ceraurus'' is a genus of cheirurid trilobite of the middle and, much more rarely, the upper Ordovician. They are commonly found in strata of the lower Great Lakes region. These trilobites have eleven thoracic segments, a very small pygidium a ...

''; later moved by Chatterton and Ludvigsen in 1976. * ''Encrinuroides insularis'' Shaw, 1968

References

External links

''Encrinuroides''
at the

Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ...

Encrinuridae genera Fossil taxa described in 1931 Ordovician trilobites of Europe Ordovician trilobites of North America Paleozoic life of Ontario Verulam Formation Paleozoic life of the Northwest Territories Paleozoic life of Quebec {{Phacopida-stub