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.
Gram Formation | |
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Stratigraphic range: Tortonian ~ | |
Type | Formation |
Lithology | |
Primary | Claystone |
Location | |
Coordinates | 55°18′N 9°06′E / 55.3°N 9.1°E |
Approximate paleocoordinates | 55°36′N 8°06′E / 55.6°N 8.1°E |
Region | Jutland |
Country | Denmark |
Type section | |
Named for | Gram |
Gram Formation (Denmark) |
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]