Darwinius masillae (Bild: Jens L. Franzen)

†Uintanius ameghini (Omomyidae)

Uintanius ameghini ist eine Primatenart innerhalb der Familie Omomyidae, die ab dem Paläogen (Eozän) im Ypresium lebte, das vor rund 56 Millionen Jahren begann und bis vor 47,8 Millionen Jahren andauerte.

Die Funddaten, die Systematik sowie die unten folgende Literatursammlung stammen aus der Paleobiology Database, Lizenz

Systematik

Daten zu den einzelnen Funden von Uintanius ameghini
Sammlung Epoche, Alter Geologie, Formation
Grizzly Buttes Ypresian
zwischen 46.2 und 50.3 Millionen Jahren 		Bridger
Museum Kommentar z. Taxonomie
AMNH,USNM,YPM mostly from Bridger B2 according to Matthew 1909 and Osborn 1929
type of "Triacodon nanus" is from Grizzly Buttes: Thorpe 1923a
U.a. am Fundort ausgegraben: Microsyops elegans
Sammlung Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Henry's Fork Hill (Bridger D) Ypresian
zwischen 46.2 und 50.3 Millionen Jahren 		Bridger Cedar Mountain; Henry's Fork Table
Kommentar z. Taxonomie
not the same as North of Cedar Mountain (see)
U.a. am Fundort ausgegraben: Uintasorex parvulus
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Powder Wash (Upper) 2 mi SE of Powder Springs Ypresian
zwischen 46.2 und 50.3 Millionen Jahren 		Green River Powder Springs
Lithographie Kommentar z. Taxonomie
"a uniformly muddy, fine-grained sublitharenite" (Gunnell and Bartels 1999) sec 8 T 7S R 25E: Van Houten 1945
same as the "Green River" fauna of Burke 1935 and Kay 1957
according to Remy 1992 there is an Ar-Ar date of 47.2 Ma on the "curly tuff... between the S1 marker unit and the Magohany oil shale bed" (S1 unit is lower); because the fauna is from "82 m below" the shale and the date is interpreted by Remy as Uintan, I assume it is too young for use as a calibration point
"Class 1" reliability K-Ar date of 44.8 (= 46.0) +/- 0.9 Ma (Mauger 1977) for the Wavy Tuff is definitely too young for use as the tuff is 20 ft above the Mahogany Oil Shale; Wavy Tuff redated at 42.3 +/- 2.0 (FT on zircon) by Bryant et al. 1989
original list repeated almost without modification by Gunnell and Bartels 1999
Black and Sutton list the following: Thisbemys corrugatus "Leptotomus bridgerensis"
falls in the Parachute Creek Mbr. sensu Roehloer 1992
early Bridgerian
the record of Apatemys hendryi reported by Robinson 1966b is omitted without comment by K & S
U.a. am Fundort ausgegraben: Uintasorex parvulus
Sammlung Epoche, Alter Geologie, Formation
Summer's Dry Creek (Bridger C) Ypresian
zwischen 46.2 und 50.3 Millionen Jahren 		Bridger
Kommentar z. Taxonomie
same as Big Dry Creek based on locality data of Gazin 1965a
"The campsite at Lonetree was along the stage road at Summer's Ranch": West 1990; however, this is nowhere near Big Dry Creek based on map of West 1976a
"Helohyus (?)" Sinclair 1914: "B5, mouth of Summers' Dry Creek"; specimen not mentioned by West 1984
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation
UM BRW-14 county assignment uncertain Ypresian
zwischen 46.2 und 50.3 Millionen Jahren 		Bridger
Kommentar z. Taxonomie
Bridger B according to Gunnell 1995a
U.a. am Fundort ausgegraben: Trogolemur myodes
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation
UM BRW-35 county assignment uncertain Ypresian
zwischen 46.2 und 50.3 Millionen Jahren 		Bridger
U.a. am Fundort ausgegraben: Trogolemur myodes

Literatur

C. L. Gazin 1958, A review of the middle and upper Eocene primates of North America. Smithsonian Miscellaneous Collections. 136:1, p. 1 - 112
L. Krishtalka, R. K. Stucky 1984, Middle Eocene marsupials (Mammalia) from northeastern Utah and the mammalian fauna from Powder Wash. Annals of Carnegie Museum. 53:2, p. 31 - 46
G. F. Gunnell, R. K. Stucky 1995, Omomyid primates (Tarsiiformes) from the Bridger Formation, middle Eocene, southern Green River Basin, Wyoming. Journal of Human Evolution. 28:2, p. - 46
J. Alroy, R. K. Stucky 2002, Synonymies and reidentifications of North American fossil mammals. . :2, p. - 46