The small museum focuses primarily on fossils found in the Gram Clay Pit, most of which are from animals such as the prehistoric megalodon shark Otodus megalodon[1] who died in the Gram Sea (the shallow sea that covered most of Denmark) 10 million years ago in the early Miocene epoch.

[2] The exhibit focuses in particular on whales and the evolution from land mammals to giants of the sea, as the remains of prehistoric whales have been found in the region.

Of particular note is the discovery of a new species, Dagonodum mojnum, known as the Mojn-whale, named after the word for "goodbye" in the local dialect.

In addition, a discovery of a new whale specimen in 2007 is thought to be a new species, but evidence is still lacking.

[4] Visitors to the museum can explore the Gram Clay Pit and search for fossils themselves.