Also known as Corner Lot exposure
Where: Washington (48.7° N, 118.7° W: paleocoordinates 54.4° N, 101.9° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Tom Thumb Member (Klondike Mountain Formation), Ypresian (56.0 - 47.8 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: lacustrine - large; lithified, brown mudstone
Size class: macrofossils
Primary reference: N. D. Sinitshenkova. 1999. A new mayfly species of the extant genus Neoephemera from the Eocene of North America (Insecta: Ephemerida = Ephemeroptera: Neoephemeridae). Paleontological Journal 33:403-405 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 104761: authorized by Matthew Clapham, entered by Matthew Clapham on 09.02.2011, edited by Jered Karr and Karl Volkman
Creative Commons license: CC BY (attribution)
Taxonomic list
Insecta | |
Neoephemera antiqua n. sp.
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"Cephalozygoptera indet." = Zygoptera3
"Cephalozygoptera indet." = Zygoptera3 Selys-Longchamps 1854 damselfly SR 15-001-004.1; SRUI -9-96-91
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Okanagrion sp.3, Okanagrion threadgillae n. sp.3, Okanagrion hobani3, Okanagrion worleyae3, Okanopteryx sp.3
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Ulteramus republicensis n. gen. n. sp.8
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Eourocerus anguliterreus n. gen. n. sp.9
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Megaraphidia klondika n. sp.6
Megaraphidia klondika n. sp.6 Archibald and Makarkin 2021 snakefly SR 03-01-01/UWBM 97073, SR 16-004-001.01, SR 99-71-63
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"Cretomerobius wehri n. sp." = Archibaldia wehri15
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Ainigmapsychops inexspectatus n. gen. n. sp.14
Ainigmapsychops inexspectatus n. gen. n. sp.14 Makarkin and Archibald 2014 silky lacewing SRUI 99-96-76
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Nymphes georgei n. sp.7
Nymphes georgei n. sp.7 Archibald et al. 2009 split-footed lacewing SR09-07-08 collected by Steven George
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"Polystoechotidae indet." = Ithonidae5, Polystoechotites lewisi n. sp.5, Polystoechotites falcatus n. sp.5, Allorapisma chuorum12
Allorapisma chuorum12 Makarkin and Archibald 2009 moth lacewing SRUI08-04-01 collected by Karl Volkman in June 2007
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Eoceneithycerus carpenteri n. gen. n. sp.11
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Angiospermae | |
Acer spitzi n. sp.16, Acer washingtonense n. sp.16, Acer republicense n. sp.16, Acer wehri n. sp.16, Acer hillsi n. sp.16, Acer stonebergae16
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