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The term "Okanagan Highlands" for Eocene formations of the region was coined by Wesley Wehr and Howard Schorn in a 1992 Washington Geology paper on the conifer research at Republic. The name was derived from the current Okanagan Highlands but applied to the, as then identified, microthermal forests preserved at Republic and Princeton. [18]
The paleoflora of the Eocene Okanagan Highlands includes all plant and fungi fossils preserved in the Eocene Okanagan Highlands Lagerstätten.The highlands are a series of Early Eocene geological formations which span an 1,000 km (620 mi) transect of British Columbia, Canada and Washington state, United States and are known for the diverse and detailed plant fossils which represent an upland ...
Eosalmo driftwoodensis fossils have been recovered from a number of locations in the Okanagan Highlands. Articulated skeletons are known from the type locality Driftwood Shales in Driftwood Canyon Provincial Park, near Smithers, British Columbia, the Allenby Formation surrounding Princeton, British Columbia, Canada and the southernmost highlands sites in the Klondike Mountain Formation ...
The Stonerose Interpretive center & Eocene Fossil Site is a 501c(3) non-profit public museum and fossil dig located in Republic, Washington. The center was established in 1989 and houses fossils that have been featured in National Geographic Magazine , Sunset magazine , and numerous scientific works.
Research tapered off until a series of fish were collected in the Toroda Creek Graben northwest of Republic by Robert Carl Pearson during his early 1960's field mapping for the Geologic map of the Bodie Mountain quadrangle, Ferry and Okanogan Counties, Washington. The fossils were tentatively identified by paleoichthyologist David Dunkle in ...
The formation is a lagerstätte with exceptionally well-preserved plant and insect fossils has been found, along with fossil epithermal hot springs. The Klondike Mountain formation is the youngest in a series of formations which belong to the Challis Sequence volcanics, and is the southernmost of the Eocene Okanagan Highlands paleolake ...
The Quilchena fossil locality is dated to 51.5 ± 0.4 Ma corresponding to the Early Eocene Climatic Optimum (EECO), and is reconstructed as the warmest and wettest of the Early Eocene upland sites from the Okanagan Highlands of British Columbia and northern Washington State. Mean annual temperature (MAT) is estimated from leaf margin analysis ...
The fossiliferous deposits of the region were noted as early as 1873, with small amounts of systematic work happening in the 1880-90s on British Columbian sites, and 1920-30s for Washington sites. Focus and more detailed descriptive work on the Okanagan Highlands site started in the last 1970's.