Geologic map of upper cretaceous and tertiary strata and coal stratigraphy of the Paleocene Fort Union Formation, Rawlins-Little Snake River area, south-central Wyoming

Hettinger, Robert D.; Honey, James G.; Ellis, Margaret S.; Barclay, C.S. Venable; East, Joseph A.

doi:10.3133/sim3053

Cited by 8 publications

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“…1) which separates it from the Washakie Basin (Love 1961;Kirschbaum et al 1994). The Granite Mountains Uplift bounds the GDB to the north, and to the east is the Rawlins Uplift which separates the GDB from the Hanna Basin (Lillegraven et al 2004;Hettinger et al 2008). During the earliest Paleocene, however, the GDB was contiguous with the Hanna Basin, and both formed part of the Greater Green River Basin (Lillegraven et al 2004;Lillegraven 2015).…”

Section: Geological Settingmentioning

confidence: 99%

“…The stratigraphy and sedimentology of the Paleocene Fort Union Formation in the GDB have been characterized in a number of studies (Hettinger et al , 2008Hettinger & Kirschbaum 1991;Honey & Hettinger 2004;Hettinger & Honey 2006). In the eastern Washakie Basin and south-eastern GDB, the Fort Union Formation is subdivided into three members that were named and described by Honey & Hettinger (2004) and Hettinger & Honey (2006): the oldest and most basal China Butte Member, the poorly exposed Blue Gap Member and the uppermost Overland Member.…”

Section: Geological Settingmentioning

confidence: 99%

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New earliest Paleocene (Puercan) periptychid ‘condylarths’ from the Great Divide Basin, Wyoming, USA

Atteberry

Eberle

2021

Journal of Systematic Palaeontology

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An earliest Paleocene (Puercan) locality in the China Butte Member of the Fort Union Formation in the Great Divide Basin (GDB) of Wyoming contains a diverse mammalian faunal assemblage, including a number of 'condylarth' taxa. From UCM locality 2011035, we describe three new periptychid 'condylarths' and report first occurrences of Maiorana noctiluca, Ampliconus antoni and Conacodon harbourae from the GDB. The new genus and species Miniconus jeanninae is characterized by a ridge-like metaconid and incipient paraconid on p4, and a molar parastylid. Based on its similarity to M. jeanninae and differences from other species of Oxyacodon, O. archibaldi is placed within the new genus Miniconus. A second new genus and species Beornus honeyi is characterized by its large size with inflated premolars and molars, and small molar paraconid. A new species of Conacodon, C. hettingeri, is similar to other species of Conacodon but differs in its m3 morphology. To examine the relationships of the three new GDB taxa to each other and to other Puercan 'condylarths' from the Western Interior of North America, a phylogenetic analysis was performed using 28 Puercan periptychid and arctocyonid taxa as well as the eutherian outgroup taxon Procerberus formicarum and 64 dental characters. The resulting strict consensus tree of 210 steps confirms that the three new species from the GDB fall within Periptychidae. Beornus honeyi forms a polytomy with Mithrandir gillianus and Hemithlaeus kowalevskianus. Conacodon hettingeri is recovered as the basal member of a clade that includes the other species of Conacodon. Miniconus jeanninae is the sister to M. archibaldi. Additionally, the early Puercan Mimatuta spp. and Maiorana noctiluca fall within the Arctocyonidae, supporting the phylogenetic placement of these taxa by other recent analyses. The occurrence of the three new periptychids in the GDB indicates that mammalian diversity is higher than previously suggested for the early Puercan. http://zoobank.org/urn:lsid:zoobank.org.pub:4F31F461-814D-4C4A-99A9-3D7ED5D6701C

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Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

New earliest Paleocene (Puercan) periptychid ‘condylarths’ from the Great Divide Basin, Wyoming, USA

Atteberry

Eberle

2021

Journal of Systematic Palaeontology

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“…UCM loc. 2011035 lies~50 m (166 ft) above the base of the Fort Union Formation in the China Butte Member (Hettinger et al, 2008) in the GDB. Using the North American Land Mammal Ages (NALMA) as the biochronological framework, the fauna is hypothesized to represent the early Puercan Interval Zone (Pu1).…”

Section: Geologic Settingmentioning

confidence: 99%

Phylogeny of New Earliest Paleocene (Puercan) Periptychid ‘Condylarths’ From the Great Divide Basin, Wy

Atteberry¹,

Eberle²

2018

Geological Society of America Abstracts With Programs

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“…Ridge low and lingual on p4No paraconid or metaconid on p4 Distinct, lingual paraconulid (circled) Closely appressed trigonid cusps Anteriorly pitched Earliest Paleocene (Puercan) Periptychid 'Condylarths' from the Great Divide Basin, WY Atteberry, Madelaine R., University of Colorado, Boulder, CO; Eberle, Jaelyn J., University of Colorado, Boulder, CO Map of the Greater Green River Basin showing the Great Divide Basin study locality, indicated by star (modified fromHettinger et al 2008).…”

mentioning

confidence: 99%

“…Stratigraphic section showing the position of UCM locality 2011035 (modified fromHettinger et al 2008).…”

mentioning

confidence: 99%

Phylogeny of New Earliest Paleocene (Puercan) Periptychid ‘Condylarths’ From the Great Divide Basin, Wy

Atteberry¹,

Eberle²

2018

Geological Society of America Abstracts With Programs

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Geologic map of upper cretaceous and tertiary strata and coal stratigraphy of the Paleocene Fort Union Formation, Rawlins-Little Snake River area, south-central Wyoming

Cited by 8 publications

References 0 publications

New earliest Paleocene (Puercan) periptychid ‘condylarths’ from the Great Divide Basin, Wyoming, USA

New earliest Paleocene (Puercan) periptychid ‘condylarths’ from the Great Divide Basin, Wyoming, USA

Phylogeny of New Earliest Paleocene (Puercan) Periptychid ‘Condylarths’ From the Great Divide Basin, Wy

Phylogeny of New Earliest Paleocene (Puercan) Periptychid ‘Condylarths’ From the Great Divide Basin, Wy

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