Gram Formation
Stratigraphic range: Tortonian
~11.6–7.2 Ma

PreЄ

Gram Clay Pit, the prime source of fossils from the Gram Formation

Type| Formation
Lithology
Primary| Claystone
Location
Coordinates|  [ ⚑ ] : 55°18′N 9°06′E﻿ / ﻿55.3°N 9.1°E﻿ / 55.3; 9.1
Paleocoordinates|  [ ⚑ ] 55°36′N 8°06′E﻿ / ﻿55.6°N 8.1°E﻿ / 55.6; 8.1
Region| Jutland
Country| Denmark
Type section
Named for| Gram

Gram Formation (Denmark)

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. The Gram Formation was a very animal rich environment, having many different animals like whales, sharks, rays and fish. Sharks like basking shark and sandtiger shark lived in the area, but the most famous and biggest shark of this formation was Otodus megalodon. Megalodon would have been the apex predator of Denmark during the Miocene.

## 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 Otodus megalodon.[3]

## See also

* List of fossil sites
* Gram Natural History Museum

## References

1. ↑ Ramassamy, Benjamin; Lauridsen, Henrik (October 2019). "A new specimen of Ziphiidae (Cetacea, Odontoceti) from the late Miocene of Denmark with morphological evidence for suction feeding behaviour". Royal Society Open Science 6 (10). doi:10.1098/rsos.191347. PMID 31824732. Bibcode: 2019RSOS....691347R.
2. ↑ http://natuurtijdschriften.nl/download?type=document&docid=674554 [full citation needed]
3. ↑ Almgreen, S. E. Bendix (15 November 1983). "Carcharodon megalodon from the Upper Miocene of Denmark, with comments on elasmobranch tooth enameloid: coronoïn". Bulletin of the Geological Society of Denmark 32: 1–32. doi:10.37570/bgsd-1983-32-01. NAID 10012345550.

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