Also known as SC-29
Where: Park County, Wyoming (44.8° N, 109.0° W: paleocoordinates 49.4° N, 92.3° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Willwood Formation, Early/Lower Eocene (55.8 - 48.6 Ma)
• said to be both late Clarkforkian and Eocene
• group of beds-level stratigraphic resolution
Environment/lithology: wet floodplain; lithified, lenticular, brown wackestone
Size classes: macrofossils, mesofossils
Preservation: replaced with calcite, bone collector
Collected by P. D. Gingerich in 1975; reposited in the UMMP
Collection methods: bulk, quarrying, chemical,
• "The entire lens J fauna [at SC-29] was recovered from a mass of freshwater limestone occupying a volume of approximately 2,000 c3 and weighing an estimated 5 kg" and vertebrates fossil were recovered by "dissolution of the limestone in dilute formic acid (10%)"
Primary reference: P. D. Gingerich. 1987. Early Eocene bats (Mammalia, Chiroptera) and other vertebrates in freshwater limestones of the Willlwood Formation, Clark's Fork Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 27(11):275-320 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 15081: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Will Clyde and Patricia Holroyd
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Gastropoda | |
Oreohelix megarche Cockerell and Henderson 1912 mountain snail | |
cf. Microphysula sp. Cockerell 1926 slug | |
"Hendersonia evanstonensis" = Helix evanstonensis, "Grangerella sinclairi" = Gastrodonta evanstonensis sinclairi
"Hendersonia evanstonensis" = Helix evanstonensis White 1878 slug
"Grangerella sinclairi" = Gastrodonta evanstonensis sinclairi Cockerell 1912 slug | |
cf. Albertanella minuta Russell 1931 slug | |
"Discus ralstonensis" = Pyramidula ralstonensis
"Discus ralstonensis" = Pyramidula ralstonensis Cockerell 1914 slug | |
"cf. Pupilla sp." = Pupa (Pupilla)
"cf. Pupilla sp." = Pupa (Pupilla) Leach 1828 snail | |
Amphibia | |
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Aves | |
Calcardea junnei n. gen. n. sp.
Calcardea junnei n. gen. n. sp. Gingerich 1987 bird | |
Reptilia | |
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Anguimorpha indet. squamates
Varanoidea indet. Gray 1827 squamates | |
Mammalia | |
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Limaconyssus habrus n. gen. n. sp., cf. Leptacodon sp., Wyonycteris chalix n. gen. n. sp., "Leptacodon rosei" = Plagioctenodon rosei, Plagioctenodon thewisseni5
Limaconyssus habrus n. gen. n. sp. Gingerich 1987 placental
cf. Leptacodon sp. Matthew and Granger 1921 placental
Wyonycteris chalix n. gen. n. sp. Gingerich 1987 placental thought by Gingerich to be a bat, but by Hand et al. 1994 to be a non-chiropteran archontan of unclear affinities
"Leptacodon rosei" = Plagioctenodon rosei Gingerich 1987 placental | |
Carpolestes simpsoni n. sp.3
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Tinimomys graybulliensis Szalay 1974 primate | |
cf. Worlandia sp. Bown and Rose 1979 colugo | |
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Ectypodus powelli Jepsen 1940 multituberculate | |
Boysia | |
"cf. Grangerella phenacodorum" = Boysia phenacodorum
"cf. Grangerella phenacodorum" = Boysia phenacodorum Cockerell 1914 |