Isalo III Formation
The Isalo III Formation is a geological formation in Madagascar, off the eastern coast of Africa. It dates back to the Middle Jurassic. The use of the term "Isalo III" is somewhat controversial as the two prior units and II are Triassic cross-bedded sandstone units that form a continuous depositional sequence, while the "Isalo III" sandstones are not part of the same depositional sequence, and were deposited considerably later. and are perhaps better treated as part of several separate formations. It is traditionally divided into two subunits the lower, Bajocian aged Isalo IIIa unit also known as the Beronono Formation and the upper, Bathonian aged Isalo IIIb unit also known as the Sakaraha Formation or Sakahara Formation. The Sakaraha Formation consists of sandstones, marls and carbonate
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2019 in archosaur paleontology2020 in archosaur paleontologyAmbondro mahaboArchaeodontosaurusGeology of MadagascarIsalo IIILapparentosaurusList of fossiliferous stratigraphic units in MadagascarList of pterosaur-bearing stratigraphic unitsNarindasaurusNotosuchiaRazanandrongobeSakahara FormationSakaraha Formation
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Isalo III Formation
The Isalo III Formation is a geological formation in Madagascar, off the eastern coast of Africa. It dates back to the Middle Jurassic. The use of the term "Isalo III" is somewhat controversial as the two prior units and II are Triassic cross-bedded sandstone units that form a continuous depositional sequence, while the "Isalo III" sandstones are not part of the same depositional sequence, and were deposited considerably later. and are perhaps better treated as part of several separate formations. It is traditionally divided into two subunits the lower, Bajocian aged Isalo IIIa unit also known as the Beronono Formation and the upper, Bathonian aged Isalo IIIb unit also known as the Sakaraha Formation or Sakahara Formation. The Sakaraha Formation consists of sandstones, marls and carbonate
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The Isalo III Formation is a g ...... provided a variety of fossils.
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20,589,267
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extent
name
Isalo III Formation
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overlies
Isalo II Formation
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period
Bathonian
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prilithology
region
Mahajanga & Fianarantsoa Provinces
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subunits
Isalo IIIa or Beronono Formation
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Isalo IIIb or Sakaraha Formation
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subject
hypernym
point
-16.6 47.0
comment
The Isalo III Formation is a g ...... andstones, marls and carbonate
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label
Isalo III Formation
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