Euloma Angelin 1854 (trilobite)

Artiopoda - Olenida - Eulomidae

Alternative spelling: Ptychoparia (Euloma)

Synonym: Calymenopsis Bergeron 1895

Parent taxon: Eulomidae according to P. A. Jell and J. M. Adrain 2002

See also Sepkoski 2002 and Walcott 1884

Sister taxa: Acrocephalaspina, Altaiaspis, Amzasskiella, Crucicephalus, Dolgeuloma, Duplora, Eulominae, Iveria, Karataspis, Ketyna, Kujandaspis, Limpeina, Loparella, Lopeuloma, Natmus, Pareuloma, Probilacunaspis, Proteuloma, Pseudoacrocephalites, Stigmatoa

Subtaxa: Euloma (Archaeuloma) Euloma (Plecteuloma) Euloma granulatum Ptychoparia (Euloma) dissimilis

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Ecology: fast-moving low-level epifaunal carnivore

Distribution:

• Billingen of Sweden (2 collections)

• Arenig of France (1), Morocco (1), Sweden (3)

• Klabava of Czechia (2)

• Ordovician of Canada (1: Newfoundland and Labrador), China (10), France (8), Iran (1), Morocco (5), Norway (4), the Russian Federation (2), Spain (2), Sweden (5), the United Kingdom (1), United States (1: Montana)

• Taoyuanian of China (2)

• Cambrian to Ordovician of the Russian Federation (1)

• Cambrian of Australia (1), China (5), the Russian Federation (3)

Total: 61 collections including 62 occurrences

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