Gram Formation

Gram Formation
Stratigraphic range: Tortonian ~11.6–7.2  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Gram Clay Pit, the prime source of fossils from the Gram Formation
Type	Formation
Lithology
Primary	Claystone
Location
Coordinates	55°18′N9°06′E / 55.3°N 9.1°E / 55.3; 9.1
Approximate paleocoordinates	55°36′N8°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.

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): 191347. Bibcode:2019RSOS....691347R. doi:10.1098/rsos.191347. PMC   6837206 . PMID   31824732.
2. http://natuurtijdschriften.nl/download?type=document&docid=674554%5B‍%5D%5B%5D
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. CiteSeerX   10.1.1.514.1782 . doi: 10.37570/bgsd-1983-32-01 . S2CID   53311833. NAID   10012345550.