MolluscaBase source details
White, C.A. (1885). On Marine Eocene, fresh-water Miocene, and other fossil Mollusca of western North America. United States Geological Survey Bulletin. 18: 1-26.
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White, C.A.
1885
On Marine Eocene, fresh-water Miocene, and other fossil Mollusca of western North America
United States Geological Survey Bulletin
18: 1-26
Publication
Date
action
by
Helix (Mesodon) A. Férussac, 1821 accepted as Mesodon A. Férussac, 1821 (basis of record)
Helix (Mesodon) dallii Stearns, 1885 † accepted as Vespericola dallii (Stearns, 1885) † (original description)
Unio condoni C. A. White, 1885 † accepted as Margaritifera condoni (C. A. White, 1885) † (original description)
Helix (Mesodon) dallii Stearns, 1885 † accepted as Vespericola dallii (Stearns, 1885) † (original description)
Unio condoni C. A. White, 1885 † accepted as Margaritifera condoni (C. A. White, 1885) † (original description)
Fossil range
Exact age uncertain. Claimed to be from the "John Day group" (today John Day Formation), which roughly ranges in ... [details]
Spelling
Subgenus misspelt as "Monodon" in heading of species description. [details]
Type locality
"The North Fork of John Day River, Oregon, at the angle of the big bend, longitude 119° 40', latitude 44° 50" ... [details]
Type locality
"The North Fork of John Day River, Oregon, at the angle of the big bend, longitude 119° 40', latitude 44° 50'" ... [details]
