†Smilodectes gracilis (Notharctidae)
Smilodectes gracilis ist eine Primatenart innerhalb der Familie Notharctidae, die ab dem Paläogen (Eozän) im Ypresium lebte, das vor rund 56 Millionen Jahren begann und bis vor 47,8 Millionen Jahren andauerte.
Daten zu den einzelnen Funden von Smilodectes gracilis
| Sammlung | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung | |
|---|---|---|---|---|
| 1375 No.8 | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger | B-8 | |
| U.a. am Fundort ausgegraben: | Microsyops elegans | |||
| Sammlung | Epoche, Alter | Geologie, Formation |
|---|---|---|
| B-11 | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger |
| Sammlung | Epoche, Alter | Geologie, Formation | ||
|---|---|---|---|---|
| Cottonwood Creek (Lower Bridger) | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger | ||
| Kommentar z. Taxonomie | ||||
| "Bridger C is exposed along the upper course": Wood 1934 "Viverravus gracilis" Thorpe 1923a: level not stated AMNH 19231 from B3 is either "Eotrigonias petersoni" or Hyrachyus: Wood 1927 |
||||
| U.a. am Fundort ausgegraben: | Notharctus tenebrosus | |||
| Sammlung | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung | |
|---|---|---|---|---|
| Fault | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger | B-1; Big Sandy; UW V-570001 | |
| Kommentar z. Taxonomie | ||||
| due to errors and omissions in their list, I am unsure if the following "Bridger, Big Sandy" records of Black and Sutton 1984 pertain to Fault: Paramys excavatus Leptotomus parvus "Ischyrotomus oweni" | ||||
| U.a. am Fundort ausgegraben: | Omomys carteri | |||
| 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 | |
|---|---|---|---|---|
| Hawk | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger | B-3 | |
| U.a. am Fundort ausgegraben: | Omomys carteri | |||
| Sammlung | Kommentar zum Fundort | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung |
|---|---|---|---|---|
| Huerfano I | "Sec. 14, 15, 16, T26S, R70W" | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Huerfano | Huerfano Muddy Divide, Muddy Fork |
| Kommentar z. Taxonomie | ||||
| Gardnerbuttean; "Most specimens are from below the white bed (unit 20 of measured section)" | ||||
| U.a. am Fundort ausgegraben: | Microsyops scottianus | |||
| Sammlung | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung | |
|---|---|---|---|---|
| Jean's Quarry | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger | B-9 | |
| U.a. am Fundort ausgegraben: | Microsyops elegans | |||
| Sammlung | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung | |
|---|---|---|---|---|
| Little White Butte | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger | B-7 | |
| U.a. am Fundort ausgegraben: | Microsyops elegans | |||
| Sammlung | Epoche, Alter | Geologie, Formation | ||
|---|---|---|---|---|
| Morrow Creek Locality 10 | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Green River | ||
| Kommentar z. Taxonomie | ||||
| said to be in the "Morrow Creek Mbr.," which is actually the Laney Mbr. according to Gazin 1962 | ||||
| U.a. am Fundort ausgegraben: | Omomys carteri | |||
| Sammlung | Kommentar zum Fundort | Epoche, Alter | Geologie, Formation | |
|---|---|---|---|---|
| North Fork of the Shoshone River (NF-4) | Wapiti Valley | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Aycross | |
| Kommentar z. Taxonomie | ||||
| level is approximate said to be Bridger B |
||||
| U.a. am Fundort ausgegraben: | Washakius insignis | |||
| Sammlung | Kommentar zum Fundort | Epoche, Alter | Geologie, Formation | |
|---|---|---|---|---|
| Picket Lake | near Honeycomb Buttes, Great Divide Basin | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Green River | |
| U.a. am Fundort ausgegraben: | Cantius nunienus | |||
| 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 | Kommentar zur Sammlung | |
|---|---|---|---|---|
| Tree Road | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger | B-4 | |
| U.a. am Fundort ausgegraben: | Omomys carteri | |||
| Sammlung | Epoche, Alter | Geologie, Formation |
|---|---|---|
| Twin Buttes (Lower Bridger) | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger |
| Kommentar z. Taxonomie | ||
| Twin Buttes records of unclear status: "Notharctus robustior" Robinson 1957: supposedly upper Bridger, but probably lower Bridger based on Gazin's discussion of Smilodectes; could be N. pugnax or perhaps N. tenebrosus based on chart Patriofelis ferox Wortman 1894: "Twin Buttes" Limnocyon verus Thorpe 1923a: level not stated Orohippus progressus type if from an unknown level at Twin Buttes according to Gazin but from "Hor. C" according to Granger 1908; see also Kitts 1957b, who implies that O. progressus and O. sylvaticus are present in Bridger C sensu Gazin Palaeosyops robustus Osborn 1929: from "C or "D" Telmatherium cultridens Osborn 1929: "C or D" Mesatirhinus megarhinus Osborn 1929: level not stated "Homogalax bridgerensis" Troxell 1922b: type, level not stated and Isectolophus latidens ranges throughout section according to Gazin Hyrachyus eximius Wood 1934: "Twin Buttes... hence Bridger C or D" and "South Twin Buttes"; referred specimen of "H. princeps"; all are possibly from Bridger B based on revised stratigraphy of Gazin Hyrachyus modestus and type of "Ephyrachyus cristalophus" of Wood 1934: both from "Bridger C3" and based on Wood's map it is not clear whether this is above or below the Sage Creek White Layer "agreeing in size with" Homacodon sp. Sinclair 1914: Bridger "C1"; specimen not mentioned by West 1984, and probably from Bridger B based on stratigraphy of Gazin 1976 "Lophiohyus alticeps" type is from an unknown level; see also Sinclair 1914 |
| Sammlung | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung | |
|---|---|---|---|---|
| Wash | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger | B-5 | |
| Kommentar z. Taxonomie | ||||
| Korth 1984: "Microparamys sp. B" is either Mattimys or Janimus | ||||
| U.a. am Fundort ausgegraben: | Omomys carteri | |||
| Sammlung | Kommentar zum Fundort | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung |
|---|---|---|---|---|
| Bill’s Smilodectes BLM locality | "in T 16N R 110W" (no section number or any other details given) | Ypresian zwischen 46.2 und 50.3 Millionen Jahren |
Bridger | DMNS loc. 885 |
| Kommentar z. Stratigraphie | Lithographie | Museum | ||
| "approximately 1-m-thick horizon... about 4–5 m below Gazin’s (1965) Sugar White Layer" | "slate green coloured mudstone" | DMNH | ||
| U.a. am Fundort ausgegraben: | Omomys carteri | |||
Literatur
J. L. Wortman 1903, Studies of Eocene Mammalia in the Marsh Collection, Peabody Museum. Part II. Primates. Suborder Cheiromyoidea. The American Journal of Science, series 4. 16, p. 345 - 368P. Robinson 1957, The species Notharctus from the Middle Eocene. Postilla. 28, p. 1 - 27
R. M. West 1973, Geology and mammalian paleontology of the New Fork-Big Sandy area, Sublette County, Wyoming. Fieldiana: Geology. 29, p. - 27
C. L. Gazin 1976, Mammalian Faunal Zones of the Bridger Middle Eocene. Smithsonian Contributions to Paleobiology. 26, p. 1 - 25
P. D. Gingerich 1979, Phylogeny of middle Eocene Adapidae (Mammalia, Primates) in North America: Smilodectes and Notharctus. Journal of Paleontology. 53:1, p. 153 - 163
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, W. S. Bartels, P. D. Ginberich, V. Torres 1992, Wapiti Valley Faunas: Early and Middle Eocene Fossil Vertebrates from the North Fork of the Shoshone River, Park County, Wyoming. Contributions from the Museum of Paleontology, University of Michigan. 28:11, p. 247 - 287
R. K. Stucky, W. S. Bartels, P. D. Ginberich, V. Torres 1994, Personal communication regarding identifications of Eocene mammals. . :11, p. - 287
J. Alroy, W. S. Bartels, P. D. Ginberich, V. Torres 2002, Synonymies and reidentifications of North American fossil mammals. . :11, p. - 287
M. Spaulding, J. J. Flynn, R. K. Stucky 2010, A new basal Carnivoramorphan (Mammalia) from the ‘Bridger B’ (Black’s Fork member, Bridger Formation, Bridgerian Nalma, middle Eocene) of Wyoming, USA. Palaeontology. 53:4, p. 815 - 832, DOI: 10.1111/j.1475-4983.2010.00963.x
