PBDB Collection

Bridgeport Quarries (Miocene of the United States)

Also known as UNSM Mo-113, 114, 115, 116, 118

Where: Morrill County, Nebraska (41.7° N, 103.1° W: paleocoordinates 42.4° N, 99.2° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Runningwater Formation, Early/Lower Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Reposited in the UNSM

Primary reference: R. M. Stecher, C. B. Schultz, and L. G. Tanner. 1962. A middle Miocene rhinoceros quarry in Morrill County, Nebraska (with notes on hip disease in Diceratherium). Bulletin of the University of Nebraska State Museum 4(7):101-111 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 17881: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Mammalia
Carnivora - Amphicyonidae	Amphicyonidae indet.⁶, Cynelos sp.⁴, Daphoenodon (Borocyon) robustum⁷ Amphicyonidae indet.⁶ Haeckel 1886 bear-dog Cynelos sp.⁴ Jourdan 1862 bear-dog Daphoenodon (Borocyon) robustum⁷ Peterson 1910 bear-dog
Carnivora - Ursidae	Cephalogale sp.⁵ Cephalogale sp.⁵ Jourdan 1862 bear said to be new
Carnivora - Canidae	Cynarctoides acridens¹¹, Desmocyon thomsoni¹¹, Metatomarctus canavus¹¹, Osbornodon iamonensis¹⁰ Cynarctoides acridens¹¹ Barbour and Cook 1914 bone-crushing dog UNSM Mo-115 Desmocyon thomsoni¹¹ Matthew 1907 bone-crushing dog UNSM Mo-113 Metatomarctus canavus¹¹ Simpson 1932 bone-crushing dog UNSM Mo-113, 114, 116 Osbornodon iamonensis¹⁰ Sellards 1916 canid
Artiodactyla - Merycoidodontidae	Merychyus arenarum Merychyus arenarum Cope 1884 oreodont described by Schultz and Falkenbach 1947 as from Quarry 1, 5, 11
Artiodactyla - Palaeomerycidae	Barbouromeryx trigonocorneus⁸, "Aletomeryx lugni n. sp." = Aletomeryx gracilis³ Barbouromeryx trigonocorneus⁸ Barbour and Schultz 1934 ruminant from Quarry 1 also at Quarry 2: Frick 1937 "Aletomeryx lugni n. sp." = Aletomeryx gracilis³ Lull 1920 ruminant from Quarry 3 also at Quarry 2
Artiodactyla - Moschidae	"Pseudoblastomeryx schultzi" = Pseudoblastomeryx advena¹ "Pseudoblastomeryx schultzi" = Pseudoblastomeryx advena¹ Matthew 1907 musk deer
Artiodactyla - Hypertragulidae	Hypertragulus minor n. sp.³ Hypertragulus minor n. sp.³ Frick 1937 ruminant UNSM 9-3-7-34; "From Bridgeport, Morrill County, Nebraska"
Artiodactyla - Camelidae	Camelidae indet.¹ Camelidae indet.¹ Gray 1821 camel
Perissodactyla - Equidae	Equidae indet.¹, Anchitherium sp.², Archaeohippus sp., Hypohippus sp. Equidae indet.¹ Gray 1821 horse Anchitherium sp.² von Meyer 1844 anchitheriine horse confirmed by MacFadden 2001 Archaeohippus sp. Gidley 1906 anchitheriine horse Hypohippus sp. Leidy 1858 anchitheriine horse
Perissodactyla - Rhinocerotidae	Diceratherium niobrarense⁹, Menoceras barbouri⁹ Diceratherium niobrarense⁹ Peterson 1906 rhinoceros Menoceras barbouri⁹ Wood 1964 rhinoceros
Reptilia
Squamata - Iguanidae	Sceloporus sp.¹² Sceloporus sp.¹² Wiegmann 1828 spiny lizard UNSM Mo-115
Squamata - Rhineuridae	Rhineura marslandensis¹² Rhineura marslandensis¹² Yatkola 1976 worm lizard UNSM Mo-115

¹Alroy 2002; ²Forsten 1991; ³Frick 1937; ⁴Hunt 1972; ⁵Hunt 1998; ⁶Hunt 2002; ⁷Hunt 2009; ⁸Liter and Prothero 2003; ⁹Prothero 2005; ¹⁰Wang 1994; ¹¹Wang et al. 1999; ¹²Yatkola 1976