PBDB Collection

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 - 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
Artiodactyla - Protoceratidae	Syndyoceras cooki³ Syndyoceras cooki³ Barbour 1905 protoceratid "Lower... Marsland, 5 to 7 miles northeast 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 - 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"
Tribosphenida - 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