Niobrara River (coll. Hayden 1857) (Miocene to of the United States)

Where: Sheridan County, Nebraska (42.7° N, 102.5° W: paleocoordinates 43.2° N, 99.7° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Loup Fork Formation, Barstovian to Barstovian (16.3 - 9.4 Ma)

• Wang et al. (1999) considers the Niobrara River localities to be Barstovian - Clarendonian in age

•entered as "Loop Fork"

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by F. V. Hayden group in 1857; reposited in the USNM

Primary reference: J. Leidy. 1858. Notice of Remains of Extinct Vertebrata, from the Valley of the Niobrara River, Collected during the Exploring Expedition of 1857, in Nebraska, under the Command of Lieut. G. K. Warren, U. S. Top. Eng., by Dr. F. V. Hayden, Geologist to the Expedition. Proceedings of the Academy of Natural Sciences of Philadelphia 10:15-89 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 190543: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 11.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Testudines - Testudinidae
"Testudo (Stylemys) niobrarensis n. sp." = Testudo niobrarensis
"Testudo (Stylemys) niobrarensis n. sp." = Testudo niobrarensis Leidy 1858 turtle
Mammalia
 Proboscidea - Elephantidae
"Elephas (Euelephas) imperator n. sp." = Mammuthus columbi
"Elephas (Euelephas) imperator n. sp." = Mammuthus columbi Falconer 1857 imperial mammoth
 Proboscidea - Gomphotheriidae
"Mastodon (Tetralophodon) mirificus n. sp." = Stegomastodon mirificus
"Mastodon (Tetralophodon) mirificus n. sp." = Stegomastodon mirificus Leidy 1858 gomphothere
 Perissodactyla - Rhinocerotidae
Rhinoceros crassus n. sp.
Rhinoceros crassus n. sp. Leidy 1858 rhinoceros
 Perissodactyla - Equidae
Merychippus insignis, "Hippotherium speciosum" = Neohipparion affine, "Hippotherium occidentale" = Cormohipparion occidentale, "Merychippus mirabilis" = Pliohippus mirabilis, "Equus (Protohippus) perditus n. sp." = Protohippus perditus, Equus excelsus n. sp., "Anchitherium (Parahippus) cognatus n. sp." = Parahippus cognatus, "Anchitherium (Hypohippus) affinis n. sp." = Hypohippus affinis
Merychippus insignis Leidy 1856 horse
"Hippotherium speciosum" = Neohipparion affine Leidy 1869 hipparionine horse
"Hippotherium occidentale" = Cormohipparion occidentale Leidy 1856 hipparionine horse
"Merychippus mirabilis" = Pliohippus mirabilis Leidy 1858 horse
"Equus (Protohippus) perditus n. sp." = Protohippus perditus Leidy 1858 horse
Equus excelsus n. sp. Leidy 1858 horse
"Anchitherium (Parahippus) cognatus n. sp." = Parahippus cognatus Leidy 1858 anchitheriine horse
"Anchitherium (Hypohippus) affinis n. sp." = Hypohippus affinis Leidy 1858 anchitheriine horse
 Artiodactyla - Antilocapridae
"Cervus warreni n. sp." = Merycodus warreni, Merycodus necatus n. sp.
"Cervus warreni n. sp." = Merycodus warreni Leidy 1858 pronghorn
Merycodus necatus n. sp. Leidy 1854 pronghorn
 Artiodactyla - Merycoidodontidae
"Merychyus major n. sp." = Ustatochoerus major, "Merychyus medius n. sp." = Ustatochoerus medius, Merychyus elegans n. gen. n. sp., Merycochoerus proprius n. gen. n. sp.
"Merychyus major n. sp." = Ustatochoerus major Leidy 1858 oreodont
"Merychyus medius n. sp." = Ustatochoerus medius Leidy 1858 oreodont
Merychyus elegans n. gen. n. sp. Leidy 1858 oreodont
Merycochoerus proprius n. gen. n. sp. Leidy 1858 oreodont
 Artiodactyla - Camelidae
Procamelus occidentalis n. gen. n. sp., Megalomeryx niobrarensis n. gen. n. sp.
Procamelus occidentalis n. gen. n. sp. Leidy 1858 camel
Megalomeryx niobrarensis n. gen. n. sp. Leidy 1858 camel
 Carnivora - Felidae
"Felis (Pseudaelurus) intrepidus n. sp." = Pseudaelurus intrepidus
"Felis (Pseudaelurus) intrepidus n. sp." = Pseudaelurus intrepidus Leidy 1858 cat
 Carnivora - Canidae
Aelurodon ferox n. gen. n. sp., "Canis temerarius n. sp." = Paratomarctus temerarius, "Canis (Epicyon) haydeni n. sp." = Epicyon haydeni, "Canis saevus n. sp." = Epicyon saevus, "Canis vafer n. sp." = Leptocyon vafer
Aelurodon ferox n. gen. n. sp. Leidy 1858 bone-crushing dog
"Canis temerarius n. sp." = Paratomarctus temerarius Leidy 1858 bone-crushing dog
"Canis (Epicyon) haydeni n. sp." = Epicyon haydeni Leidy 1858 bone-crushing dog
"Canis saevus n. sp." = Epicyon saevus Leidy 1858 bone-crushing dog
"Canis vafer n. sp." = Leptocyon vafer Leidy 1858 canine
 Rodentia - Castoridae
"Hystrix (Hystricops) venustus n. sp." = Hystricops venustus, "Castor (Eucastor) tortus n. sp." = Eucastor tortus
"Hystrix (Hystricops) venustus n. sp." = Hystricops venustus Leidy 1858 beaver
"Castor (Eucastor) tortus n. sp." = Eucastor tortus Leidy 1858 beaver