Gidley Quarry (Paleocene of the United States)
Where: Sweetgrass County, Montana (45.8° N, 109.8° W)
• Paleocoordinates: 56.0° N, 73.7° W (Wright 2013)
• coordinate based on political unit
• small collection-level geographic resolution
When: Fort Union Formation, Torrejonian (63.8 - 60.9 Ma)
• said by Buckley 1993 to be in the same (unidentified) reversed polarity chron as Silberling Quarry, i.e., possibly C27r
Environment/lithology: terrestrial
Primary reference: K. D. Rose. 1981. The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary. University of Michigan Papers on Paleontology 26:1-197 [J. Alroy/J. Alroy/P. Mannion]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 14906: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Chris Bell and Jonathan Marcot
Creative Commons license: CC0 (CC0)
Taxonomic list
• many of the types were described by Simpson 1935d
Simpson 1935d lists the type of "Chriacus pusillus" from "Gidley or Silberling Quarries" - no other specimens are listed but the type's catalogue number is close to that of other types from Gidley Quarry; however, this record is omitted by Simpson 1937a and later authors
Simpson 1935d lists the type of "Chriacus pusillus" from "Gidley or Silberling Quarries" - no other specimens are listed but the type's catalogue number is close to that of other types from Gidley Quarry; however, this record is omitted by Simpson 1937a and later authors
Show authors, comments, and common names
| Amphibia | |
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| Mammalia | |
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Myrmecoboides montanensis n. sp. Gidley 1915 eutherian
Prodiacodon concordiarcensis n. sp. Simpson 1935 eutherian | |
Haplaletes disceptatrix n. sp., Litomylus dissentaneus n. sp.
Haplaletes disceptatrix n. sp. Simpson 1935 elephant shrew
Litomylus dissentaneus n. sp. Simpson 1935 elephant shrew | |
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Adunator ladae1 Simpson 1935 elephant shrew includes "Mckennatherium libitum" type of Van Valen 1965
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Leptonysson basiliscus n. gen. n. sp.8 Van Valen 1967 placental AMNH 35295 - holotype (left mandible)
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Leptacodon munusculum n. sp.
Leptacodon munusculum n. sp. Simpson 1935 placental | |
Stilpnodon simplicidens n. sp.
Stilpnodon simplicidens n. sp. Simpson 1935 placental | |
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Prothryptacodon furens n. sp. Simpson 1935 placental
Coriphagus montanus Douglass 1908 placental | |
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Dissacus sp. Cope 1881 condylarth | |
Ictidopappus mustelinus n. sp.
Ictidopappus mustelinus n. sp. Simpson 1935 carnivoran | |
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Protictis haydenianus Cope 1882 placental | |
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Anisonchus sectorius Cope 1881 condylarth | |
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Tetraclaenodon puercensis Cope 1881 condylarth includes "T. septentrionalis" Thewissen 1990, which included some specimens of T. puercensis
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Chriacus punitor1, "Mimotricentes subtrigonus" = Tricentes subtrigonus1, Chriacus baldwini1, "Arctocyon corrugatus" = Arctocyon corrugatus2, "Arctocyon montanensis" = Arctocyon corrugatus1
"Arctocyon montanensis" = Arctocyon corrugatus1 Cope 1883 condylarth also includes his types of "Neoclaenodon silberlingi" and "N. latidens"
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Eudaemonema cuspidata n. sp.
Eudaemonema cuspidata n. sp. Simpson 1935 placental | |
Pronothodectes matthewi n. sp.
Pronothodectes matthewi n. sp. Gidley 1923 primate | |
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Picrodus silberlingi Douglass 1908 primate | |
Elphidotarsius florencae n. sp.
Elphidotarsius florencae n. sp. Gidley 1923 primate | |
Palaechthon alticuspis n. gen. n. sp.
Palaechthon alticuspis n. gen. n. sp. Gidley 1923 primate | |
Palenochtha minor n. gen. n. sp.
Palenochtha minor n. gen. n. sp. Gidley 1923 primate | |
Paromomys maturus n. sp., Paromomys depressidens n. sp.
Paromomys maturus n. sp. Gidley 1923 primate
Paromomys depressidens n. sp. Gidley 1923 primate | |
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Litaletes disjunctus n. sp. Simpson 1935 condylarth | |
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Aphronorus fraudator n. sp. Simpson 1935 eutherian | |
Pantolambda intermedium n. sp.
Pantolambda intermedium n. sp. Simpson 1935 pantodont includes type of "Titanoides simpsoni" of Simons 1960
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Jepsenella praepropera n. gen. n. sp.
Jepsenella praepropera n. gen. n. sp. Simpson 1940 eutherian | |
Avunculus didelphodonti n. sp., Gelastops parcus n. sp.
Gelastops parcus n. sp. Simpson 1935 eutherian is "probably from same level" according to Simpson 1935d "probably from Silberling Quarry" according to Simpson 1937a; record definitely includes type of "Emperodon acmeodontoides" Simpson 1935d
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Stygimys jepseni n. sp.
Stygimys jepseni n. sp. Simpson 1935 multituberculate | |
Neoplagiaulacidae indet., Mimetodon silberlingi n. sp., Neoplagiaulax grangeri n. sp., Ectypodus aphronorus n. sp.6, Ectypodus szalayi n. sp.5, Parectypodus sinclairi n. sp., Mesodma pygmaea n. sp.6
Mimetodon silberlingi n. sp. Simpson 1935 multituberculate
Neoplagiaulax grangeri n. sp. Simpson 1935 multituberculate
Parectypodus sinclairi n. sp. Simpson 1935 multituberculate | |
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Ptilodus montanus Douglass 1908 multituberculate | |
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Anconodon gidleyi n. sp. Simpson 1935 multituberculate
Anconodon cochranensis Russell 1929 multituberculate includes type of "A. russelli" - see Simpson 1935d
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