Encrinuridae

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: †Trilobitomorpha
Classis: Trilobita
Ordo: Phacopida
Subordo: Cheirurina
Superfamilia: Cheiruroidea

Familia: Encrinuridae
Genera: Aegrotocatellus - Alwynulus - Atractocybeloides - Atractopyge - Avalanchurus - Balizoma - Batocara - Bevanopsis - Billevittia - Brianurus - Celtencrinurus - Coronocephalus - Cromus - Curriella - Cybele - 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 - Rongxiella - Sinocybele - Staurocephalus - Stiktocybele - Struszia - Tewonia - Walencrinuroides - Wallacia - Wuoaspis
Name
Encrinuridae Angelin 1854

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]
Taxonomy

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

†Aegrotocatellus
†Alwynulus
†Atractocybeloides
†Atractopyge
†Avalanchurus
†Balizoma
†Batocara
†Bevanopsis
†Billevittia
†Brianurus
†Celtencrinurus
†Coronaspis
†Coronocephalus
†Cromus
†Curriella
†Cybele
†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 to Lochkovian ages. Locations were varied and stretched from Florentine Valley, Tasmania to Xinjiang Province, China to Will County, Illinois.
Sources

PaleoBiology Database: Encrinuridae, basic info
Edgecombe, Gregory D. (1994). "New Lower Silurian (Llandovery) encrinurine trilobites from the Mackenzie Mountains, Canada". Journal of Paleontology. 68 (4): 824–837. doi:10.1017/S0022336000026263. JSTOR 1306150.

S. M. Gon III. "Order Phacopida". Retrieved November 21, 2010.

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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