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Okanagrion
''Okanagrion'' is an extinct odonate genus in the damselfly-like family Dysagrionidae. The genus was first described in 2021 with a series of eight species included from early Eocene Eocene Okanagan Highlands, Okanagan Highlands sites in western North America. The genus is known from the Late Ypresian sediments exposed in northeast central Washington (state), Washington at Republic, Washington, Republic where five species are present, and from the coeval McAbee Fossil Beds near Cache Creek, British Columbia, Cache Creek in Central British Columbia, where four species are present. The species richness is attributed to high latitude high alpha diversity resulting from climatic equitability during the Early Eocene in combination with resultant beta diversity between sites due to impassible topographical barriers. Distribution ''Okanagrion'' fossils have been found at two sites belonging to the Eocene Okanagan Highlands of Washington and British Columbia. Of the eight described speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zacallites
''Zacallites'' is a genus of extinct damselfly, damselflies in the Family (biology), family Zacallitidae. The genus was created for the species ''Zacallites balli'' from the Eocene Green River Formation of Colorado. Another species ''Zacallites cockerelli'' was also described from the same area in 2020. Two Eocene Okanagan Highlands fossils from the Klondike Mountain Formation at Republic, Washington were tentatively identified as ''Zacallites'' sp. by Standley Lewis (1992). However, redescription of the fossils by S. Bruce Archibald and Robert Cannings (2021) moved specimen Burke Museum, UWBM 72289 to the Dysagrionidae, dysagrionid genus ''Okanagrion'' and specimen Stonerose Interpretive Center, SCSU7B-16 to the Whetwhetaksidae, whetwhetaksid genus ''Whetwhetaksa''. References Calopterygoidea Fossil odonates Fossil Odonata genera Taxa named by Theodore Dru Alison Cockerell Green River Formation {{Calopterygoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
