Mastodon (band) band for personal reasons after just a couple of months. After recording a four-song demo and a 7-inch picture disc through Reptilian Records, Mastodon landed a record deal with Relapse Records in 2001. Mastodon released the EP "Lifesblood" in 2001, and its first full-length album, "Remission", in 2002, with the singles "March of the Fire Ants" and "Crusher/Destroyer" (which was also featured on "Tony Hawk's Underground"). On each of Mastodon's first three full-length albums the last track was an instrumental composition with a title that related to the Elephant Man. The band's second full-length album, "Leviathan", was released in 2004.
Extinct radionuclide Extinct radionuclide An extinct radionuclide is a radionuclide that was formed by nucleosynthesis before the formation of the Solar System, about 4.6 billion years ago, and incorporated into it, but has since decayed to virtually zero abundance, due to having a half-life shorter than about 100 million years. Short-lived radioisotopes that are found in nature are continuously generated or replenished by natural processes, such as cosmic rays (cosmogenic nuclides), background radiation, or the decay chain or spontaneous fission of very long-lived isotopes such as uranium or thorium. Short-lived isotopes that are not generated or replenished by natural processes are not