†Parapapio lothagamensis (Cercopithecidae)
Parapapio lothagamensis ist eine Primatenart innerhalb der Familie Cercopithecidae, die ab dem Neogen (Miozän) im Tortonium lebte, das vor rund 11,6 Millionen Jahren begann und bis vor 7,2 Millionen Jahren andauerte.
Fundorte
Die Funddaten, die Systematik sowie die unten folgende Literatursammlung stammen aus der Paleobiology Database, Lizenz
Daten zu den einzelnen Funden von Parapapio lothagamensis
| Sammlung | Kommentar zum Fundort | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung |
|---|---|---|---|---|
| Lothagam-Nawata Formation | 64 km N of Kanapoi, 4.8 km SW of Kerio delta on SW side of Lake Turkana | Tortonian zwischen 5.33 und 11.62 Millionen Jahren |
Nawata | ETE Locality 1066, Lothagam 1B, Lothagam 1A, Lothagam 1, Lothagam, Lothagam-Nawata fm indet. |
| Kommentar z. Stratigraphie | Lithographie | Kommentar z. Taxonomie | ||
| K-Ar dating for bottom of the Nawata Formation is 7.44 +/- 0.05 Ma or somewhat older. Top of Nawata formation (Purple Marker) is poorly dated, but is older than 4.2 Ma and is probably close to 5.0 Ma. | The Nawata Formation is a heterogeneous mix of sedimentary rocks, made u mostly of upward-fining sandstone to mudstone intervals, multistoried sandstones, conglomerates, and altered distal tephra. Many of the lithologies have been heavily altered by diagenesis. Has been informally subdivided into two members - the Upper and Lower Nawta using the Marker Tuff as a boundary. | This list contains only specimens collected from the Nawata formation that could not be definitively assigned to the Upper or Lower Member of the Formation. All other specimens are listed in collections 22241 and 22242 under the Upper and Lower Members. |
| Sammlung | Kommentar zum Fundort | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung |
|---|---|---|---|---|
| Lothagam-Lower Nawata Mb. | 64 km N of Kanapoi, 4.8 km SW of Kerio delta on SW side of Lake Turkana. | Tortonian zwischen 5.33 und 11.62 Millionen Jahren |
Nawata | ETE Locality 1064, Lothagam 1B, Lothagam 1A, Lothagam 1, Lothagam, Lothagam-Lower Nawata mbr, |
| Kommentar z. Stratigraphie | Lithographie | |||
| K-Ar dating constrains lower Nawata to 7.44 +/- 0.05 Ma and 6.54 +/- 0.04 Ma (Marker Tuff). | In the type section, roughly 20% of the sequence consists of conglomerats, 34% sandstones, 36% mudstones, and 10% altered tephra. Sandstones of the member typically display well-developed low-angle planar (epsilon) cross stratification, along with a variety of medium to large scale trough and planar cross bedding. Mudstones of the member typically display the wedge-shaped polygons and large-scale, slickensided dish fractures of vertisols. The basal strata of the Lower Nawata include numerous volcanic-cobble conglomerates, but such coarse lithologies are not seen higher in the member. The uppermost unit of the Lower Nawata is a prominent marker complex termed the Red Marker. This is a heterogeneous mix of sandstones and mudstones, which have a strong secondary component of analcome and iron oxides. Other noteworthy marker units witin the Lower Nawata include the Lower Markers (an altered tephra complex), the Gateway sandstone, and the Middle Markers (another tephra sequence). |
| Sammlung | Kommentar zum Fundort | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung |
|---|---|---|---|---|
| Lothagam-Upper Nawata Mb | 64 km N of Kanapoi, 4.8 km SW of Kerio delta on SW side of Lake Turkana | Messinian zwischen 3.6 und 7.25 Millionen Jahren |
Nawata or Nachukui | ETE Locality 1065, Lothagam 1C, Lothagam 1, Lothagam, Lothagam-Upper Nawata |
| Kommentar z. Stratigraphie | Lithographie | |||
| K-Ar dating constrains the Upper Nawata Member to 6.54 +/- 0.04 Ma (Marker Tuff) and 4.22 +/- 0.03 Ma (pumice clasts from 35 m above the top of the Upper Nawata Purple Marker). Thus, top of the Upper Nawata is older than 4.2 Ma, and is estimated to be 5.0 Ma. | The Upper Nawata is characterized by thick, multistoried sandstone bodies, with subsidiary mudstones, and by a paucity of altered distal tephra. The type section consists of some 75% sandstones, 21% mudstones, and 4% altered tephra. The basal unit of the member is a tephra complex termed the Marker Tuff. This complex consists of a thin-bedded, relatively homogeneous lower interval (interpreted as airfall tuff), overlain by a massive, poorly sorted sandy tuff. Sandstones of the upper Nawata are typically characterized by well-developed epsilon cross-stratification and trough cross-beds in the coarser units, grading into small-scale troughs and ripple marks in the overlying finer intervals, with abrupt transitions back to coarser sands. Mudstones are subordinate, but where present they show characteristics of paleosol development. (ref # 8636 p. 22-23). |
| Sammlung | Kommentar zum Fundort | Epoche, Alter | Geologie, Formation | Kommentar zur Sammlung |
|---|---|---|---|---|
| Middle Awash - Adu-Asa fm. | Latitude and logitude assigned from Asa Koma, Adu-Asa fm. is exposed in SW valley between 725-825 m a.s.l. and in the Central Awash Complex between ~640-660 m a.s.l. | Tortonian zwischen 3.6 und 11.62 Millionen Jahren |
Adu-Asa | ETE Locality 960, Middle Awash - Adu-Asa fm., |
| Kommentar z. Stratigraphie | Lithographie | |||
| ETE dating method: absolute, ETE age comment: Max age = 9.0 (ignimbrite overlying Chorora fm).Min age = 3.89 +/- .02 (AT-1 or VT-1 in Aramis mbr, Ar/Ar & Ca/K dates). radiometric intage_max, radiometric intage_min | ETE rock type adj: 0, ETE lithology comments: Silts, sands, clays, tuffs, and diatomites. | |||
| U.a. am Fundort ausgegraben: | Ardipithecus kadabba | |||
Literatur
M. G. Leakey, J. M. Harris 2003, Lothagam: the dawn of humanity in eastern Africa. Lothagam: the dawn of humanity in eastern Africa. , p. 678Y. HaileSelassie, G. Woldegabriel, T.D. White, R.L. Bernor, D. Degusta, P.R. Renne, W.K. Hart, E. Vrba, A. Stanley, F.C. Howell 2004, Mio-Pliocene Mammals from the Middle Awash, Ethiopia. Geobios. 37, p. 536 - 552