Gram Formation Explained

Gram Formation
Type:Formation
Age:Tortonian
~
Period:Tortonian
Prilithology:Claystone
Namedfor:Gram
Region:Jutland
Country: Denmark
Coordinates:55.3°N 9.1°W
Paleocoordinates:55.6°N 8.1°W

The Gram Formation is a geological formation in Gram, Denmark. It preserves fossils dating from the Miocene period. The formation consists of three layers: the glauconite-rich, the Gram Clay, and the Gram sand. The sediments in the formation were deposited in an open marine depositional environment known as the Gram Sea.

Fossil content

Many fossils of new species have been discovered in the formation, including those of the beaked-whale Dagonodum mojnum[1] and the mollusk species Pseudocochlespira gramensis,[2] as well as specimens of better-known species such as Carcharodon megalodon.[3]

See also

Notes and References

  1. Ramassamy . Benjamin . Lauridsen . Henrik . A new specimen of Ziphiidae (Cetacea, Odontoceti) from the late Miocene of Denmark with morphological evidence for suction feeding behaviour . Royal Society Open Science . October 2019 . 6 . 10 . 191347 . 10.1098/rsos.191347 . 31824732 . 6837206 . 2019RSOS....691347R .
  2. http://natuurtijdschriften.nl/download?type=document&docid=674554{{dead link|date=January 2022}}
  3. Almgreen . S. E. Bendix . Carcharodon megalodon from the Upper Miocene of Denmark, with comments on elasmobranch tooth enameloid: coronoïn . Bulletin of the Geological Society of Denmark . 15 November 1983 . 32 . 1–32 . . 10.1.1.514.1782 . 10.37570/bgsd-1983-32-01 . free . 53311833 .