Related Research Articles
Daphoenus is an extinct genus of amphicyonids. Daphoenus inhabited North America from the Late Eocene to the Middle Miocene, 37.2—16.0 Mya, existing for approximately 21 million years.
Eomyidae is a family of extinct rodents from North America and Eurasia related to modern day pocket gophers and kangaroo rats. They are known from the Middle Eocene to the Late Miocene in North America and from the Late Eocene to the Pleistocene in Eurasia. Eomyids were generally small, but occasionally large, and tended to be squirrel-like in form and habits. The family includes the earliest known gliding rodent, Eomys quercyi.
The John Day Formation is a series of rock strata exposed in the Picture Gorge district of the John Day River basin and elsewhere in north-central Oregon in the United States. The Picture Gorge exposure lies east of the Blue Mountain uplift, which cuts southwest–northeast through the Horse Heaven mining district northeast of Madras. Aside from the Picture Gorge district, which defines the type, the formation is visible on the surface in two other areas: another exposure is in the Warm Springs district west of the uplift, between it and the Cascade Range, and the third is along the south side of the Ochoco Mountains. All three exposures, consisting mainly of tuffaceous sediments and pyroclastic rock rich in silica, lie unconformably between the older rocks of the Clarno Formation below and Columbia River basalts above.
The North American land mammal ages (NALMA) establishes a geologic timescale for North American fauna beginning during the Late Cretaceous and continuing through to the present. These periods are referred to as ages or intervals and were established using geographic place names where fossil materials were obtained.
The Orellan North American Stage on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), 34-32 million years ago. It is usually considered to fall within the Early Oligocene. The Orellan precedes the Whitneyan and follows the Chadronian NALMA stages.
Brachyhyops is an extinct genus of entelodont artiodactyl mammal that lived during the Eocene Epoch of western North America and southeastern Asia. The first fossil remains of Brachyhyops are recorded from the late Eocene deposits of Beaver Divide in central Wyoming and discovered by paleontology crews from the Carnegie Museum of Natural History during the early 20th century. The type species, Brachyhyops wyomingensis, is based on a single skull and was named by E.H. Colbert in 1937, but was not officially described until 1938. During the latter half of the 20th century, additional specimens from North America have been recorded from Saskatchewan and as far south as Texas, indicating that Brachyhyops had a broad distribution and was well-dispersed throughout western North America.
The White River Fauna are fossil animals found in the White River Group of South Dakota, North Dakota, Wyoming, Colorado and Nebraska in the United States. In southwest South Dakota and northwest Nebraska, these fossils are characteristic of the White River Badlands, though they can be found far beyond the limits of the White River watershed.
Palaeogale is an extinct genus of carnivorous mammal known from the Late Eocene, Oligocene, and Early Miocene of North America, Europe, and Eastern Asia. A small carnivore often associated with the mustelids, Palaeogale might have been similar to living genets, civets, and linsangs.
Dominickus is an extinct genus of moth in the butterfly-moth family Castniidae containing a single species Dominickus castnioides. The species is known from late Eocene, Priabonian stage, lake deposits near the small community of Guffey in Teller County, Colorado, United States.
Megaleptictis is an extinct genus of large insectivore mammal from Late Paleogene deposits of Custer County, South Dakota. It is known from the holotype KUVP 2568 a nearly complete skull including the mandibles. It was collected in an 1894 University of Kansas expedition from the tan siltstone of the White River Group. It was first named by Tj Meehan and Larry D. Martin in 2011 and the type species is Megaleptictis altidens.
This paleomammalogy list records new fossil mammal taxa that were described during the year 2013, as well as notes other significant paleomammalogy discoveries and events which occurred during that year.
Aphaenogaster donisthorpei is an extinct species of ant in formicid subfamily Myrmicinae known from a Late Eocene fossil from North America. A. donisthorpei was one of two Aphaenogaster species described in the 1930 paper.
The White River Formation is a geologic formation of the Paleogene Period, in the northern Great Plains and central Rocky Mountains, within the United States.
The Washakie Formation is a geologic formation in northern Colorado and southern Wyoming. It preserves many mammal, bird, reptile and other fossils dating back to the Lutetian stage of the Eocene within the Paleogene period. The sediments fall in the Bridgerian and Uintan stages of the NALMA classification.
The DeBeque Formation is a geologic formation in Colorado's Piceance Basin, preserving fossils which date back to the Late Paleocene to Early Eocene period (Clarkforkian to Wasatchian in the NALMA classification. Examples of these fossils are held in the University of Colorado Museum of Natural History.
The Sheep Pass Formation is a geologic formation in Nevada. It preserves fossils dating back to the Paleogene period.
The Diligencia Formation (Td) is a geologic formation cropping out in the Orocopia Mountains in southern California. It preserves mammal fossils dating to the Late Oligocene to Early Miocene.
Priabona is an extinct genus of big-headed flies in the dipteran subfamily Nephrocerinae, within which it is one of only two genera. The genus contains a single described species, Priabona florissantius. Priabona is known from a single Late Eocene fossil from western North America.
Xenocranium is an extinct monotypic genus of placental mammal from extinct paraphyletic subfamily Epoicotheriinae within extinct paraphyletic family Epoicotheriidae in extinct order Palaeanodonta, that lived in North America during the late Eocene.
Oaxacagale is an extinct weasel genus of Mustelidae that lived in the Eocene in North America. It is thought to have resembled the extant Mustela frenata.
References
- 1 2 3 4 Prothero, Donald R.; Emry, Robert J. (2004). "5. The Chadronian, Orellan, and Whitneyan North American Land Mammal Ages". In Woodburne, Michael O. (ed.). Late Cretaceous and Cenozoic Mammals of North America: Biostratigraphy and Geochronology. Columbia University Press. pp. 156–168. doi:10.7312/wood13040-007. ISBN 978-0-231-13040-0.
- 1 2 Hanneman, Debra; Lofgren, Don; Hasiotis, Stephen; McIntosh, William (2022). "Late Eocene (Priabonian) chronostratigraphy, depositional environment, and paleosol-trace fossil associations, Pipestone Springs, southwest Montana". Acta Palaeontologica Polonica. 67: 5–20. doi:10.4202/app.00901.2021. ISSN 0567-7920.
- ↑ Fostowicz-Frelik, Łucja; Tabrum, Alan R. (2009). "Leporids (Mammalia, Lagomorpha) from the Diamond O Ranch Local Fauna, Latest Middle Eocene of Southwestern Montana". Annals of Carnegie Museum. 78 (3): 253–271. doi:10.2992/007.078.0303. ISSN 0097-4463.
- ↑ Sweedler, Rory E.; Eberle, Jaelyn J.; Mihlbachler, Matthew C. (2021-06-01). "A latest Eocene (Chadronian) brontothere (Mammalia, Perissodactyla) from the Antero Formation, South Park, Colorado". Rocky Mountain Geology. 56 (1): 37–50. doi:10.24872/rmgjournal.56.1.37. ISSN 1555-7340.
- ↑ Lloyd, K. J.; Eberle, J. J. (2012-09-01). "A late Eocene (Chadronian) mammalian fauna from the White River Formation in Kings Canyon, northern Colorado". Rocky Mountain Geology. 47 (2): 113–132. doi:10.2113/gsrocky.47.2.113. ISSN 1555-7332.
- ↑ Lucas, Spencer G. (2015). "Eocene fossil vertebrates of New Mexico". New Mexico Museum of Natural History and Science Bulletin. Vol. 68. pp. 149–157.
- ↑ Jiménez-Hidalgo, Eduardo; Smith, Krister T.; Guerrero-Arenas, Rosalia; Alvarado-Ortega, Jesus (2015). "The first Late Eocene continental faunal assemblage from tropical North America". Journal of South American Earth Sciences. 57: 39–48. doi:10.1016/j.jsames.2014.12.001.
- ↑ Jiménez-Hidalgo, Eduardo; Lander, E. Bruce; Israde-Alcántara, Isabel; Rodríguez-Caballero, Nadia Wendoline; Guerrero-Arenas, Rosalía (2021). "Earliest Arikareean (later early Oligocene) Iniyoo local Fauna from Chilapa Formation of Santiago Yolomécatl area in northwestern Oaxaca, southern Mexico". Journal of South American Earth Sciences. 109: 103307. doi:10.1016/j.jsames.2021.103307.
 | This geochronology article is a stub. You can help Wikipedia by expanding it. |