Where: southern Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.2° N, 99.0° W)
• coordinate based on political unit
When: Lower Member (Harrison Formation), Monroecreekian to Monroecreekian (26.3 - 24.8 Ma)
• Skinner 1968 "Monroe Creek-Harrison formations(undifferentiated) from the Tunnel Hill locality on the Ledingham ranch, Sioux County,Nebraska;"
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Primary reference: X. Wang. 1994. Phylogenetic systematics of the Hesperocyoninae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 221:1-207 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 17704: authorized by John Alroy, entered by John Alroy on 30.04.1994
Creative Commons license: CC BY (attribution)
Taxonomic list
status unclear: specimen of Schultz and Falkenbach 1949 tentatively referred to Mesoreodon "cheeki" but also to "M." megalodon; from "Ledingham Ranch"
| Mammalia | |
"Merychyus siouxensis" = Paramerychyus harrisonensis2, "Megoreodon hollandi" = Megoreodon grandis2, "Pseudocyclopidius lullianus" = Leptauchenia lullianus1, "Pithecistes copei" = Leptauchenia decora1
"Merychyus siouxensis" = Paramerychyus harrisonensis2 Peterson 1907 oreodont "vicinity" of Tunnel Hill in the Harrison Fm., but this is a field attribution
"Megoreodon hollandi" = Megoreodon grandis2 Douglass 1907 oreodont "M. grandis loomisi" of Schultz and Falkenbach 1954; middle of local sequence at Tunnel Hill
"Pseudocyclopidius lullianus" = Leptauchenia lullianus1 Thorpe 1921 oreodont "Pseudocyclopidius lullianus expiratus": "Ledingham Ranch" in supposed "upper Monroe Creek"
"Pithecistes copei" = Leptauchenia decora1 Leidy 1856 oreodont "upper part of Monroe Creek Formation... Tunnel Hill locality, Ledingham Ranch"
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"Protomeryx leonardi" = Miotylopus leonardi2
"Protomeryx leonardi" = Miotylopus leonardi2 Loomis 1911 camel "Monroe Creek-Harrison sequence in the vicinity of the Tunnel Hill locality"
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"Mesocyon" temnodon Wortman and Matthew 1899 canid
Enhydrocyon pahinsintewakpa Macdonald 1963 canid 3/4 NW of Ledingham Ranch; Tunnell Hill sensu stricto
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