Limnopithecus legetet (Hominidae)



Limnopithecus legetet ist eine Primatenart innerhalb der Familie Hominidae, die ab dem Neogen (Miozän) im Burdigalium lebte, das vor rund 20,4 Millionen Jahren begann und bis vor 16 Millionen Jahren andauerte.

Fundorte

Systematik

Daten zu den einzelnen Funden von Limnopithecus legetet
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Fort Ternan Wicker's Farm, 2km south of Fort Ternan Serravallian
zwischen 11.62 und 13.82 Millionen Jahren
Upper Koru Series ETE Locality 139, Fort Ternan,
Kommentar z. Stratigraphie Lithographie
ETE dating method: absolute, ETE age comment: MinBFA - 13.9 +/- 0.03 - stepwised degassing isochron methodMaxBFA - 14.0 +/- 0.02 - total fusion method;both on biotite radiometric intage_min bed: Soil #1/ Soil #2 ETE rock type adj: tuffaceous, ETE lithology comments: .
U.a. am Fundort ausgegraben: Proconsul africanus
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Maboko Island - surface "Island in Winam Gulf, L. Victoria." Langhian
zwischen 13.82 und 15.97 Millionen Jahren
Maboko ETE Locality 890, Kiboko, Maboko Island - surface,
Kommentar z. Stratigraphie Lithographie
ETE dating method: composite, ETE age comment: Min age = 13.8 +/- .04 Ma (Bed 8 Tuff). Max age = ~17 Ma (based on biostratigraphy) radiometric intage_min ETE rock type adj: ., ETE lithology comments: "massive muds and silts, calcretes, altered and unaltered tuffs"
U.a. am Fundort ausgegraben: Victoriapithecus macinnesi
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Maboko Island - ?Maboko fm. "Island in Winam Gulf, L. Victoria." Langhian
zwischen 13.82 und 15.97 Millionen Jahren
Maboko ETE Locality 891, Kiboko, Maboko Island - ?Maboko fm.,
Kommentar z. Stratigraphie Lithographie
ETE dating method: composite, ETE age comment: Min age = 13.8 +/- .04 Ma (Bed 8 Tuff). Max age = ~17 Ma (based on biostratigraphy) radiometric intage_min ETE rock type adj: ., ETE lithology comments: "massive muds, silts, calcretes, altered and unaltered tuffs"
U.a. am Fundort ausgegraben: Victoriapithecus macinnesi
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Maboko Main Locality, Maboko Island (Bed 3) "Island in Winam Gulf, L. Victoria." Langhian
zwischen 13.82 und 15.97 Millionen Jahren
Maboko ETE Locality 899, Quarry 1, Kiboko, Maboko Island - Bed 3
Kommentar z. Stratigraphie Lithographie
ETE dating method: composite, ETE age comment: Min age = 14.71 +/- .16 Ma (Bed 8 Tuff). Max age = ~17 Ma (based on biostratigraphy). radiometric intage_min greenish-yellow sandy clay underlain by mottled brown and white bentonite
U.a. am Fundort ausgegraben: Victoriapithecus macinnesi
Sammlung Kommentar zum Fundort Epoche, Alter Geologie, Formation Kommentar zur Sammlung
Maboko Island - Quarry 2 "Island in Winam Gulf, L. Victoria." Langhian
zwischen 13.82 und 15.97 Millionen Jahren
Maboko ETE Locality 902, Maboko Island - Quarry 2,
Kommentar z. Stratigraphie Lithographie
ETE dating method: composite, ETE age comment: Min age = 13.8 +/- .04 Ma (Bed 8 Tuff). Max age = ~17 Ma (based on biostratigraphy) radiometric intage_min ETE rock type adj: ., ETE lithology comments: pebbly mudstones with matrix-supported pebbles which have been altered to clay
U.a. am Fundort ausgegraben: Victoriapithecus macinnesi
Sammlung Kommentar zum Fundort Epoche, Alter Kommentar zur Sammlung
Bukwa II on the lower northeastern slopes of Mount Elgon (34°47.085′, 1°17.098′), approximately 2.25 miles east of the town of Bukwa, Uganda Burdigalian
zwischen 15.97 und 20.44 Millionen Jahren
BUKII
Kommentar z. Stratigraphie Lithographie Kommentar z. Taxonomie
revised age estimate for the Bukwa localities of 19.1–19.5 Ma (MacLatchy et al., 2006 MacLatchy, L., A. Deino, and J. Kingston. 2006. An updated chronology for the early Miocene of NE Uganda. Journal of Vertebrate Paleontology 26(3, Supplement):93A. Cote et al. 2018: 40Ar/39Ar incremental heating ages on lavas bracketing the site indicate that the Bukwa fossils were deposited ~19 Ma, roughly 3 Ma younger than the original radiometric age. green ostracod clay unit within the larger lacustrine tuff and silt beds produces fish fossils plants, ostracods reported present

Literatur

A. Walker 1969, Fossil Mammal Locality on Mount Elgon, Eastern Uganda. Nature. 223, p. 591 - 593
W. W. Bishop, J. A. Miller, F.J. Fitch 1969, New Potassium-Argon Age Determinations Relevant to the Miocene Fossil Mammal Sequence in East Africa. American Journal of Science. 267, p. 669 - 699
B. R. Benefit, M. L. McCrossin, F.J. Fitch 1989, New primate fossils from the Middle Miocene of Maboko Island, Kenya. Journal of Human Evolution. 18, p. 493 - 497
C. S. Feibel, F. H. Brown, F.J. Fitch 1991, Age of the primate-bearing deposits on Maboko Island, Kenya. Journal of Human Evolution. 21, p. 221 - 225
M. L. McCrossin, F. H. Brown, F.J. Fitch 1992, New species of bushbaby from the Middle Miocene of Maboko Island, Kenya. American Journal of Physical Anthropology. 89, p. 215 - 233
M. Pickford, F. H. Brown, F.J. Fitch 1992, Evidence for an arid climate in western Uganda during the middle Miocene. Comptes Rendus Acad. des Sci.,serie II. 315:11, p. 1419 - 1424