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Fremouw Formation information


Fremouw Formation
Stratigraphic range: latest Permian-early Late Triassic252–235 Ma
PreꞒ
O
S
D
C
P
T
J
K
Pg
N
TypeGeological formation
Unit ofBeacon Supergroup
Sub-unitsLower, middle, upper
UnderliesFalla Formation
OverliesBuckley Formation
Thicknessup to 1,000 m (3,300 ft)
Lithology
PrimarySandstone, siltstone, mudstone
Location
Coordinates84°00′00″S 165°00′00″E / 84.0000°S 165.0000°E / -84.0000; 165.0000
Approximate paleocoordinates81°48′S 69°48′E / 81.8°S 69.8°E / -81.8; 69.8
RegionTransantarctic Mountains of Antarctica
Type section
Named forFremouw Peak, Queen Alexandra Range, Antarctica.[1]
Named byP. J. Barrett[1]
Fremouw Formation is located in Antarctica
Fremouw Formation
Fremouw Formation (Antarctica)

The Fremouw Formation is a Triassic-age rock formation in the Transantarctic Mountains of Antarctica. It contains the oldest known fossils of tetrapods from Antarctica, including synapsids, reptiles and amphibians. Fossilized trees have also been found. The formation's beds were deposited along the banks of rivers and on floodplains. During the Triassic, the area would have been a riparian forest at 70–75°S latitude.

  1. ^ a b Barrett, P.J., 1969, Stratigraphy and petrology of the mainly fluviatile Permian and Triassic Beacon rocks, Beardmore Glacier area, Antarctica. Ohio State University Institute of Polar Studies Report 34, pp1-132 .

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The Fremouw Formation is a Triassic-age rock formation in the Transantarctic Mountains of Antarctica. It contains the oldest known fossils of tetrapods...

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of capitosauroid temnospondyl known from the Middle Triassic upper Fremouw Formation in the Transantarctic Mountains of Antarctica. It contains a single...

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Gordon Valley exposes the middle and upper members of the Triassic Fremouw Formation of the Beacon Supergroup. They consist of discontinous beds of volcaniclastic...

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Edward J. Fremouw, a United States Antarctic Research Program aurora scientist at South Pole Station, 1959. The Triassic Fremouw Formation is named for...

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region. L. curvatus, L. murrayi, and L. maccaigi are known from the Fremouw Formation in the Transantarctic Mountains of Antarctica. Lystrosaurus was a...

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(2008). "A new Triassic temnospondyl from Antarctica and a review of Fremouw Formation biostratigraphy". Journal of Vertebrate Paleontology. 28 (3): 656–663...

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beds of the upper Fremouw Formation at Gordon Valley in the central Transantarctic Mountains. This portion of the Fremouw Formation consists largely of...

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within the Katberg Formation of the Beaufort Group in South Africa, and from a partial jaw found in the Lower Triassic Fremouw Formation in Antarctica. Ericiolacerta...

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"Re-description of the early Triassic diapsid Palacrodon from the lower Fremouw formation of Antarctica". Journal of Anatomy. 241 (6): 1441–1458. doi:10.1111/joa...

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browni. Fossils have been found in the Karoo, the Puesto Viejo Formation, Fremouw Formation, in South Africa/Lesotho, Argentina and Antarctica. Cynognathus...

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Zone / Burgersdorp Formation (subzones A-B)* (South Africa) Lower Ermaying Formation* (Shaanxi and Shanxi, China) Upper Fremouw Formation* (Antarctica) Jialingjiang...

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Antarctica

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the early Triassic, with the earliest known fossils found in the Fremouw Formation of the Transantarctic Mountains. Synapsids (also known as "mammal-like...

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New units were then described from this location: the Fremouw Formation and Prebble Formation, the latter term being introduced for a laharic unit, not...

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novel component to the Lower Triassic tetrapod assemblage of the Fremouw Formation (Transantarctic Basin) of Antarctica". Journal of Vertebrate Paleontology...

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Thrinaxodon Col

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Fremouw Formation. At this location, the base of the Fremouw Formation overlies a younger diabase sill. Diabase sills and dikes cross-cut the Fremouw...

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Palacrodon

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lizard or procolophonid. A skull collected from the lower part of Fremouw Formation of Antarctica was named Fremouwsaurus geludens by Gow (1992), but...

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Diademodontidae

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Remains of a diademodontid were reported in the Early-Middle Triassic Fremouw Formation in Antarctica, but that specimen was later referred to the trirachodontid...

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Triassic land vertebrate faunachrons

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assemblage (distinguishing collection of taxa) from a fossiliferous geological formation. Together, the defining index fossil and assemblage could be used to correlate...

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Los Colorados Formation

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fossiliferous formation of Arizona Elliot Formation, contemporaneous fossiliferous formation of the Karoo Basin, South Africa Fremouw Formation, contemporaneous...

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Normandien and Katberg Formations. It had not been until 1977 that additional fossils of Thrinaxodon had been discovered in the Fremouw Formation of Antarctica...

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Ericiolacertidae

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found in the Fremouw Formation of Antarctica and the Normandien Formation of South Africa, Pedaeosaurus found in the Fremouw Formation of Antarctica...

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Formation, contemporaneous fossiliferous formation of the Karoo Basin in southern Africa Fremouw Formation, contemporaneous fossiliferous formation of...

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Middle Triassic Fremouw Formation (Antarctica) by Gee & Sidor (2022), who also interpret the historic material from the Fremouw Formation attributed to...

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which the same formation is exposed. Such sites may have separate entries if they are considered to be more notable than the formation as a whole. In...

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Lossiemouth Sandstone

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southern Africa Fremouw Formation, contemporaneous fossiliferous formation of Antarctica British Geological Survey. "Lossiemouth Sandstone Formation". The BGS...

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Africa, as far as the Fremouw Formation of Antarctica, Donguz Formation ("Eryosuchus fauna") of Russia, and Lower Ermaying Formation of China. Cynognathus...

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novel component to the Lower Triassic tetrapod assemblage of the Fremouw Formation (Transantarctic Basin) of Antarctica". Journal of Vertebrate Paleontology...

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therocephalian therapsid. Its fossilized remains have been found in the Fremouw Formation of Antarctica and Australia. Part of a juvenile skull was found near...

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