Agate (5-7 Miles NE) ( of the United States)

Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.3° N, 98.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Marsland Formation (Hemingford Group), Harrisonian (24.8 - 18.5 Ma)

• = Upper Harrison beds

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: T. H. V. Rich. 1981. Origin and History of the Erinaceinae and Brachyericinae (Mammalia, Insectivora) in North America. Bulletin of the American Museum of Natural History 171(1):1-116 [J. Alroy/J. Alroy/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 17738: authorized by John Alroy, entered by John Alroy on 18.10.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• the American Museum "4 mi. N.E. of Agate" locality is the American Museum-Cook Quarry (see)
Show authors, comments, and common names
Mammalia
 Carnivora - Canidae
Desmocyon thomsoni6
Desmocyon thomsoni6 Matthew 1907 bone-crushing dog
"low in section"
 Artiodactyla - Merycoidodontidae
Merycochoerus matthewi4, Merychyus verrucomalus5
Merycochoerus matthewi4 Loomis 1924 oreodont
5 mi and 6 mi NE of Agate, "Marsland" Fm.
Merychyus verrucomalus5 Stevens 1970 oreodont
"5-7 miles NE of Agate"
 Artiodactyla - Camelidae
Michenia agatensis n. sp.2
Michenia agatensis n. sp.2 Frick and Taylor 1971 camel
from 6 mi NE of "former post office of Agate"; and second locality 5 mi NE of Agate
 Artiodactyla - Protoceratidae
Syndyoceras cooki3
Syndyoceras cooki3 Barbour 1905 protoceratid
"Lower... Marsland, 5 to 7 miles northeast of Agate"
 Artiodactyla - Moschidae
Machaeromeryx tragulus n. sp.1
Machaeromeryx tragulus n. sp.1 Matthew 1926 musk deer
"Upper Harrison Beds... 7 miles N.E. of Agate"; see also Matthew 1926
 Theriamorpha - Erinaceidae
Brachyerix macrotis
Brachyerix macrotis Matthew 1933 hedgehog
"5 to 7 miles... northeast of Agate" (formation unknown)
1Frick 1937; 2Frick and Taylor 1971; 3Patton and Taylor 1971; 4Schultz and Falkenbach 1940; 5Stevens 1970; 6Wang et al. 1999