Plesiolestes problematicus (Palaechthonidae)



Plesiolestes problematicus ist eine Primatenart innerhalb der Familie Palaechthonidae, die ab dem Paläogen (Paläozän) im Danium lebte, das vor rund 66 Millionen Jahren begann und bis vor 61,6 Millionen Jahren andauerte.

Fundorte

Systematik

Daten zu den einzelnen Funden von Plesiolestes problematicus
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Swain Quarry SE 1/4 NE 1/4 sec 3 T15N R92W, Washakie Basin Danian
zwischen 61.7 und 63.3 Millionen Jahren
Fort Union CM loc 217
Kommentar z. Taxonomie
there are seven other localities in the same section, but none of the material is described Mesodma pygmaea, i.e. sp. P, not listed, but mentioned by Krause 1977
U.a. am Fundort ausgegraben: Paromomys maturus
Sammlung Kommentar zum Fundort Epoche, Alter Kommentar zur Sammlung
Rock Bench Quarry Bighorn Basin Danian
zwischen 61.7 und 63.3 Millionen Jahren
Locality No. 6
Kommentar z. Stratigraphie Kommentar z. Taxonomie
in a stratigraphically isolated reversed polarity zone interpreted as chron 27r: Butler et al. 1987 >I have used Van Valen's 1978 list of condylarths because Rose gives no reason for ignoring it
meter level follows Butler et al. 1981
above two records presumably include "Tricentes cf. punitor" and "cf. Chriacus sp."
U.a. am Fundort ausgegraben: Palenochtha minor
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation
Bangtail Gallatin N. F., Crazy Mountain Basin -
zwischen 56.8 und 61.7 Millionen Jahren
Fort Union
Kommentar z. Taxonomie
far removed from main CMB section of Simpson 1937a
U.a. am Fundort ausgegraben: Palaechthon woodi
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Shotgun NE 1/4 SE 1/4 sec 31 T6N R3W, northern Wind River Basin: MacIntyre 1966 -
zwischen 56.8 und 61.7 Millionen Jahren
Fort Union UW V-60014, V-60016; Keefer Hill; Twin Buttes; Jenkins Mountain; New Anthill
Kommentar z. Taxonomie
this is NOT West Side of Shotgun Butte (see), which is the uppermost of three fossiliferous horizons; the fauna of the lowest horizon is not discussed by Gunnell apart from the plesiadapiforms, Gunnell's list is mostly repeated from ancient sources without modification Gunnell lists Eudaemonema cuspidata from "Shotgun fauna, Keefer Hill" but omits this from his faunal list
U.a. am Fundort ausgegraben: Nannodectes intermedius
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Who Nose? near Nose Creek in Calgary in SW 1/4 S23 T25 R1, W5 Danian
zwischen 61.7 und 63.3 Millionen Jahren
Paskapoo Nose Creek
Kommentar z. Stratigraphie Kommentar z. Taxonomie
(?middle Torrejonian, To2), Protoselene opisthacus/Mixodectes pungens Interval Zone of Lofgren et al. (2004). "fish, amphibians, lizards, and crocodylians" also present
U.a. am Fundort ausgegraben: Edworthia greggi
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Narcissus (TMP locality L2395) South side of Bow River, west of Bearspaw Dam near the western limits of the city of Calgary, in Rocky View County Danian
zwischen 61.7 und 63.3 Millionen Jahren
Porcupine Hills Bearspaw local fauna; Bow river
Kommentar z. Stratigraphie Lithographie Museum
Middle Torrejonian (To2) Caliche and clay clast lags at the base of massively bedded sandstones TMP
U.a. am Fundort ausgegraben: Pronothodectes matthewi

Literatur

J. K. Rigby, Jr. 1980, Swain Quarry of the Fort Union Formation, Middle Paleocene (Torrejonian), Carbon County, Wyoming: geologic setting and mammalian fauna. Evolutionary Monographs. 3, p. 1 - 178
K. D. Rose 1981, The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary. University of Michigan Papers on Paleontology. 26, p. 1 - 197
G. F. Gunnell 1989, Evolutionary History of Microsyopoidea (Mammalia, ?Primates) and the Relationship Between Plesiadapiformes and Primates. University of Michigan Papers on Paleontology. 27, p. 1 - 157
J. Alroy 2002, Synonymies and reidentifications of North American fossil mammals. . , p. - 157
C. S. Scott 2003, Late Torrejonian (middle Paleocene) mammals from south central Alberta, Canada. Journal of Paleontology. 77:4, p. 745 - 768
C. S. Scott, D. N. Spivak, A. R. Sweet 2013, First mammals from the Paleocene Porcupine Hills Formation of southwestern Alberta, Canada. Canadian Journal of Earth Sciences. 50:4, p. 355 - 378