Niobrara Canyon: Harrisonian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Carnivora - Mustelidae
Aelurocyon brevifacies n. sp. Peterson 1907
synonym of Megalictis simplicidens
Mammalia - Carnivora - Amphicyonidae
Daphoenodon falkenbachi Hunt 2002
Hunt 2002
(1 measurement)
Ysengrinia americana (Wortman 1901)
Hunt 2002
Mammalia - Carnivora - Canidae
Tomarctus sp. Cope 1873
    = Borophaginae indet. Simpson 1945
Hunt 1985
presumably includes "Canis vafer" of Peterson
Cynarctoides acridens (Barbour and Cook 1914)
Wang et al. 1999
"9 mi southwest of Harrison, in high brown sand"
Mammalia - Perissodactyla - Equidae
Parahippus nebrascensis n. sp. Peterson 1907
recombined as Desmatippus nebrascensis
Mammalia - Perissodactyla - Chalicotheriidae
Moropus elatus Marsh 1877
    = Moropus hollandi n. sp. Peterson 1913
Peterson 1913
reidentified M. elatus specimen "from the Upper Harrison Beds of western Nebraska" and collected in 1901 (clearly Peterson's Niobrara Canyon material)
Mammalia - Perissodactyla - Rhinocerotidae
Diceratherium sp. Marsh 1875
Hunt 1985
Mammalia - Merycoidodontidae
Merycochoerus sp. Leidy 1858
    = Merycochoerus matthewi Loomis 1924
Schultz and Falkenbach 1940
includes their "10 mi. S.W. of Harrison, Sioux County" specimen, see Yatkola 1978
Merychyus minimus n. sp. Peterson 1907
Mammalia - Tayassuidae
Tayassuidae indet. Palmer 1897
Hunt 1985
"? Thinohyus"
Mammalia - Camelidae
Procamelus sp. Leidy 1858
    = Camelidae indet. Gray 1821
Alroy 2002
no description, this could be anything
Oxydactylus longipes Peterson 1904
Oxydactylus brachyceps
    = Tanymykter brachyodontus Peterson 1904
Alroy 2002
(lapsus calami)
Mammalia - Protoceratidae
Syndyoceras cooki Barbour 1905
Patton and Taylor 1971
"Lower... Marsland, 4 miles south of Van Tassel, Sioux County, Nebraska"; based on location in Sioux County, direction is SE instead of S and this is on the Niobrara River in the Upper Harrison of Niobrara Canyon
Mammalia - Moschidae
Blastomeryx sp. Cope 1877
    = Blastomerycinae indet. Frick 1937
Alroy 2002
repeated by Hunt 1981, although Hunt 1985a refers only to "ruminants"
see common names

Geography
Country:United States State/province:Nebraska County:Sioux
Coordinates: 42.4° North, 103.8° West (view map)
Paleocoordinates:43.3° North, 98.8° West
Basis of coordinate:based on political unit
Time
10 m.y. bin:Cenozoic 4-5
*Period:Tertiary *Epoch:Miocene
Key time interval:Harrisonian
Age range of interval:23.10000 - 18.50000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Hemingford Formation:Marsland
Local section:PineR Local bed:15
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: = Upper Harrison beds
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Taxonomic list comments:above Harper Quarry and other basal Upper Harrison sites
seems to be 6 to 7 mi SW of Harrison based on rough maps
"includes Peterson's (1907) stratotype Upper Harrison mammal assemblage": Hunt 1985a; Peterson's list for the Upper Harrison is therefore merged with Hunt's;
Yatkola 1978: Peterson's collections come from "a few miles east of Wyoming-Nebraska state line for 4 or 5 miles along the south side of the Niobrara River"
status of "Merychus medius" is unclear as identification is extremely tentative and is omitted from faunal list
Metadata
Database number:17809
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:M. Carrano Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2018-02-05 13:51:43
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
2751. O. A. Peterson. 1907. The Miocene Beds of Western Nebraska and Eastern Wyoming and Their Vertebrate Faunae. Annals of Carnegie Museum 4(3):21-72 [J. Alroy/J. Alroy/J. Marcot]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1278 M. C. Coombs and W. P. Coombs, Jr. 1997. Analysis of the geology, fauna, and taphonomy of Morava Ranch Quarry, Early Miocene of northwest Nebraska. Palaios 12:165-187 [J. Alroy/J. Alroy/J. Marcot]
1971 R. M. Hunt, Jr. 1985. Faunal succession, lithofacies, and depositional environments in Arikaree rocks (lower Miocene) of the Hartville Table, Nebraska and Wyoming. Dakoterra 2(2):155-204 [J. Alroy/J. Alroy/J. Alroy]
7675 R. M. Hunt, Jr. 2002. Intercontinental migration of Neogene amphicyonids (Mammalia, Carnivora): appearance of the Eurasian beardog Ysengrinia in North America. American Museum Novitates 3384:1-53 [J. Alroy/J. Alroy/J. Alroy]
7676 R. M. Hunt, Jr. 2002. New amphicyonid carnivorans (Mammalia, Daphoeninae) from the early Miocene of southeastern Wyoming. American Museum Novitates 3385:1-41 [J. Alroy/J. Alroy/J. Alroy]
2739 T. H. Patton and B. E. Taylor. 1971. The Synthetoceratinae (Mammalia, Tylopoda, Protoceratidae). Bulletin of the American Museum of Natural History 145(2):119-218 [J. Alroy/J. Alroy/B. Beatty]
35470 O. A. Peterson. 1913. A new species of Moropus (M. Hollandi) from the base of the middle Miocene of western Nebraska. Science 38:673 [J. Alroy/J. Alroy]
3062 C. B. Schultz and C. H. Falkenbach. 1940. Merycochoerinae, a new subfamily of oreodonts. Bulletin of the American Museum of Natural History 77(5):213-306 [J. Alroy/J. Alroy/J. Marcot]
3558 X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy]