Encrinuridae is a

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

trilobite Trilobites (; meaning "three-lobed entities") are extinction, extinct marine arthropods that form the class (biology), class Trilobita. One of the earliest groups of arthropods to appear in the fossil record, trilobites were among the most succ ...

within 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 thoraci ...

that lived in what would be

Africa Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...

Asia Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

, and

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...

from the middle

Ordovician The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era, and the second of twelve periods of the Phanerozoic Eon (geology), Eon. The Ordovician spans 41.6 million years f ...

to the early

Devonian The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian per ...

from , existing for approximately 66.7 million years.

Taxonomy

Encrinuridae was named by Angelin (1854). It was assigned to

Gregory Edgecombe Gregory Donald Edgecombe is a paleontologist who is a merit researcher in the department of Earth Sciences at the Natural History Museum, London. He is a leading figure in understanding the evolution of arthropods, their position in animal evol ...

(1994). It contains the following genera: *'' Aegrotocatellus'' *'' Alwynulus'' *'' Atractocybeloides'' *'' Atractopyge'' *'' Avalanchurus'' *'' Balizoma'' *'' Batocara'' *'' Bevanopsis'' *'' Billevittia'' *'' Brianurus'' *'' Celtencrinurus'' *'' Coronaspis'' *'' Coronocephalus'' *'' Cromus'' *'' Curriella'' *''

Cybele Cybele ( ; Phrygian: ''Matar Kubileya, Kubeleya'' "Kubeleya Mother", perhaps "Mountain Mother"; Lydian: ''Kuvava''; ''Kybélē'', ''Kybēbē'', ''Kybelis'') is an Anatolian mother goddess; she may have a possible forerunner in the earliest ...

'' *'' Cybeloides'' *'' Cybelurus'' *'' Dayongia'' *'' Deacybele'' *'' Dindymene'' *'' Distyrax'' *'' Dnestrovites'' *'' Elsarella'' *'' Encrinuroides'' *'' Encrinurus'' *'' Eodindymene'' *'' Erratencrinurus'' *'' Fragiscutum'' *'' Frammia'' *'' Frencrinuroides'' *'' Johntempleia'' *'' Kailia'' *'' Koksorenus'' *'' Langgonia'' *'' Lasaguaditas'' *'' Libertella'' *'' Lyrapyge'' *'' Mackenziurus'' *'' Mitchellaspis'' *'' Nucleurus'' *'' Oedicybele'' *'' Paracybeloides'' *'' Paraencrinurus'' *'' Parakailia'' *'' Perirehaedulus'' *'' Perryus'' *'' Physemataspis'' *'' Plasiaspis'' *'' Prophysemataspis'' *'' Prostrix'' *'' Rielaspis'' *'' Rongxiella'' *'' Sinocybele'' *'' Staurocephalus'' *'' Stiktocybele'' *'' Struszia'' *'' Tewonia'' *'' Walencrinuroides'' *'' Wallacia''

Fossil distribution

Fossils were found in strata dating from the

Arenig In geology, the Arenig (or Arenigian) is a time interval during the Ordovician period and also the suite of rocks which were deposited during this interval. History The term was first used by Adam Sedgwick in 1847 with reference to the "Areni ...

Lochkovian The Lochkovian is one of three faunal stages in the Early Devonian Epoch. It lasted from 419.2 ± 3.2 million years ago to 410.8 ± 2.8 million years ago. It marked the beginning of the Devonian Period, and was followed by the Pragian Stage. It is ...

ages. Locations were varied and stretched from Florentine Valley,

Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The sta ...

to Xinjiang Province,

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

Will County, Illinois Will County is a county in the northeastern part of the state of Illinois. According to the 2020 census, it had a population of 696,355, an increase of 2.8% from 677,560 in 2010, making it Illinois's fourth-most populous county. The county sea ...

Sources

* ''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 links

''Encrinurus''
in the

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

Trilobite families Ordovician trilobites Silurian trilobites Devonian trilobites Trilobites of Africa Trilobites of Oceania Trilobites of Europe Middle Ordovician first appearances Early Devonian extinctions Trilobites of North America Trilobites of South America {{phacopida-stub