Trilobita - Redlichiida - Olenellidae
Alternative spelling: Olenellus (Mesonacis)
Synonyms: Angustolenellus Palmer and Repina 1993, Elliptocephalus (Schmidtia) Moberg 1899, Fremontia Raw 1936, Olenellus (Fremontia) Raw 1936, Schmidtia Moberg 1899
Full reference: C. D. Walcott. 1885. New genus of Cambrian trilobites, Mesonacis. American Journal of Science 3(29):328-330
Parent taxon: Mesonacinae according to B. S. Lieberman 1999
See also Harrington 1956, Jell and Adrain 2002, Lochman 1952, Palmer and Halley 1979, Palmer and Repina 1993, Riccio 1952, Sepkoski 2002, Walcott 1890, Walcott 1891, Walcott 1910 and Walcott 1916
Sister taxon: Mesolenellus
Subtaxa: Fremontia canadensis Mesonacis bonnensis Mesonacis cylindricus Mesonacis eagerensis Mesonacis fremonti Mesonacis hamoculus Mesonacis vermontanus Mesonacis wileyi
Type: Olenus vermontana
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Cambrian of Canada (6: British Columbia, Newfoundland, Northern Territories, Nunavut collections), Mexico (1), United States (30: California, Nevada, Vermont)
• Delamaran of United States (1: California)
• Caerfai of United States (1: Nevada)
Total: 39 collections including 40 occurrences
Specimen images are retrieved through the ePANDDA API.
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