aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormat
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aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormat
A new middle Paleocene mammalian fauna from the Fort Union Formation, Great Divide Basin, WyomingbyEmily K. LannoyeB.S., University of Wisconsin-Madis aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormatson, 2012A thesis submitted to theFaculty of the Graduate School of theUniversity of Colorado in partial fulfillment of the requirement for the degree of Masters of ScienceDepartment of Museum and Field Studies2015This thesis entitled:A new middle Paleocene mammalian fauna from the Fort Union Format aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormation, Great Divide Basin, WyomingWritten by Emily K. Lannoyehas been approved for the Department of Museum and Field StudiesDr. Jaelyn J. Eberle, CommiaNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormat
ttee ChairDr. Richard Stucky, Committee MemberDateThe final copy of this thesis has been examined by the signatories, and wefind that both the contentA new middle Paleocene mammalian fauna from the Fort Union Formation, Great Divide Basin, WyomingbyEmily K. LannoyeB.S., University of Wisconsin-Madis aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormattudies [Paleontology])A new middle Paleocene mammalian fauna from the Fort Union Formation, Great Divide Basin,WyomingThesis directed by Associate Professor & Curator of Fossil Vertebrates Jaelyn J. EberleOver the last three decades, mammalian faunas that span the Torrejonian-Tiffanian boundaryhave aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormatbeen reported by others from the Hanna and Bighorn Basins, and are important for assessing mammalian diversity and evolution during middle Paleocene taNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormat
ime. Reported here is a Torrejonian -Tiffanian transitional fauna from the Overland Member of the Fort Union Formation in the Great Divide Basin, soutA new middle Paleocene mammalian fauna from the Fort Union Formation, Great Divide Basin, WyomingbyEmily K. LannoyeB.S., University of Wisconsin-Madis aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormathe Overland Member include the pantodont Pantolambda cavinctis; 'condylarths' Mimotricentes sp., Haplaletes disceptatrix, Haploletes pelicotus, Litomylus dissentaneus, Litaletes disjunctus, Promioclaenus acolytus, Promioclaenus sp., Phenacodus andEctocion; cimolestids Acmeodon hyoni, Acmeodon secans aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormat, Gelastops parcus and Gelostopsjoni;pantolestids Paleotomus junior and Paleotomus senior as well as Bessoecetor; leptictids Prodiacodon concordiarcenaNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormat
sis and Prodiacodon puercensis; and the primate Nannodectes intermedius.The Overland fauna is similar to latest Torrejonian faunal assemblages elsewheA new middle Paleocene mammalian fauna from the Fort Union Formation, Great Divide Basin, WyomingbyEmily K. LannoyeB.S., University of Wisconsin-Madis aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormat index taxon for the earliest Tiffanian (Til) lineage zone, and Ectocion, which first appears in Til as well. Surprisingly, Plesiodapis praecursor, the index species on which Til is defined, has not yet been recovered in the Overland fauna. Nevertheless, based upon presence of N. intermedius and Ect aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormatocion, as well as similarities to earliest Tiffanian fauna in the Hanna Basin, I suggest the Overland fauna is earliest Tiffanian (Til) in age.With reaNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormat
gard to geographic range extensions, the largest occurs for Paleotomus junior, previouslydocumented only from localities in Alberta, Canada. Reported A new middle Paleocene mammalian fauna from the Fort Union Formation, Great Divide Basin, WyomingbyEmily K. LannoyeB.S., University of Wisconsin-Madis aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormattended from ToS to Til. While the Overland fauna is not as diverse as the earliest Tiffaman fauna in the Hanna Basin, it is comparable to other earliest Tiffanian faunas. aNewMiddlePaleoceneMammalianFaunaFromTheFortUnionFormatA new middle Paleocene mammalian fauna from the Fort Union Formation, Great Divide Basin, WyomingbyEmily K. LannoyeB.S., University of Wisconsin-MadisGọi ngay
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