†family Eurekiidae HupĂ© 1953 (trilobite)

Trilobita - Asaphida - Eurekiidae

Parent taxon: Asaphida according to H. B. Whittington et al. 1997

See also Adrain 2011 and Westrop et al. 2005

Sister taxa: Aethodionide, Ajacicrepida, Anomocaridae, Asaphina, Asaphoidea, Borogothus, Borthaspis, Boschchekulia, Brandysops, Bumastides, Callaspis, Caulaspis, Ceratolithus, Clavatellus, Cremastoglottos, Cyclopygoidea, Digrypos, Dikelocephalacea, Dikelocephalinidae, Dikelocephalopsis, Dipleuropyge, Doremataspis, Eirelithus, Elkia, Elongatanileus, Eoapatokephalus, Eoptychaspis, Eowuhuia, Erbenia, Flabellocephalus, Galerosaukia, Glyphopeltis, Gogiura, Homalopyge, Hukasawaia, Hungaiidae, Isyrakopeltis, Kaniniella, Kobayashella, Kogenium, Kokuria, Lakaspis, Liaoningella, Lichengia, Lingukainella, Lophoholcus, Lynaspis, Macropygella, Macrotoxus, Mansuyella, Mapanopsis, Meeria, Metayuepingia, Nadiyella, Nanlingia, Neopeltis, Nomadinis, Notoaphelaspis, Osceolia, Paivinia, Palella, Parabumasttides, Paratrinucleus, Pedinocephalina, Pedinocephalus, Plecteuloma, Plesiyuepingia, Portentosus, Psalaspis, Pseudocyclopyge, Pseudoptyocephalus, Ptychaspididae, Quitacetra, Quitalia, Remopleuridae, Rhyssometopidae, Rhyssometropus, Saimachia, Saukioides, Sinosaukia, Stigmacephaloides, Tchukeraspis, Telaemarrolithus, Temnoura, Theodensia, Toernquistina, Tramoria, Trinucleoidea, Walcottaspis, Xenasaphus

Subtaxa: Arcadiaspis Bandalaspis Bayfieldia Corbinia Eurekia Maladia Tostonia

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Ecology: fast-moving low-level epifaunal deposit feeder

Distribution:

• Ordovician of Canada (3: Newfoundland and Labrador, Yukon collections), United States (1: Texas)

• Cambrian of Australia (1), Canada (22: Alberta, Newfoundland and Labrador, Quebec, Yukon), United States (14: Alaska, Montana, Nevada, Utah, Vermont, Wisconsin, Wyoming)

Total: 41 collections including 53 occurrences

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