Dome Fossil

If brought to the one of the following locations, the Dome Fossil can be regenerated into a Kabuto.

In the Generation I and III games, the Dome Fossil is a Key Item.

In Pokémon Emerald, the Dome Fossil (as well as the Helix Fossil and Old Amber) is found in the game data, but it is not legitimately obtainable and has no effect. The player is unable to regenerate this fossil in the Devon Corporation.

From Generation IV onward, the Dome Fossil is no longer a Key Item, and is a normal item. Therefore, multiples of them can be obtained, they can be held, and sent to other players via trading.

Dome Fossils were first seen in Shell Shock!. They made up the structure of the island Fukuhara Island No. 4, and were revived into Kabuto in red moonlight, causing the whole island to collapse and sink.

A Dome Fossil made a cameo appearance in Ancient Family Matters! during a visual representation of Roark's love of Fossils in an argument with Byron.

In A Night in the Nacrene City Museum!, a Dome Fossil was first seen chasing Hawes, as he claimed it to be doing, but was later seen safely placed in a display case. Hawes later explained what it was to Ash and his friends. It was later revealed that the Yamask in the Nacrene City Museum was using its move Psychic to make the Dome Fossil float and chase after Hawes after he put its mask in a display case, thinking that it was a replica Yamask mask given to him as a gift from the company that made a Cofagrigus replica after purchasing it from them for the museum.

A Dome Fossil in Pokémon Origins

A Dome Fossil briefly appeared in File 2: Cubone, where it was shown being hogged by a Super Nerd at Mt. Moon.