Paleontological and Paleobotanical Museum (Nostimo) teeth of a shark that was 20–25 m long, and a Late Pliocene (3.5 million years old) tooth of an "Anancus arvenensis", a mastodon, an ancient relative of the elephant, which has been recognised here for the first time in the wider area of Western Macedonia. The mastodon which lived in this area was about the same size as a modern elephant, but with longer tusks. Also displayed are some Neolithic tools (from the 4th millennium BC): a fishing weight, and a blade for harvesting crops. Paleontological and Paleobotanical Museum (Nostimo) The Paleontological and Paleobotanical Museum () at Nostimo is
Mastodon (software) available for a range of systems, including Android, iOS, SailfishOS and Windows Mobile. While Mastodon was first released in October 2016, the service began to expand in late March and early April 2017. "The Verge" wrote that the community at this time was small and that it had yet to attract the personalities that keep users at Twitter. In November 2017 artists, writers and entrepreneurs such as Chuck Wendig, John Scalzi, Melanie Gillman and later John O'Nolan joined in, while Mastodon had reached 1 million accounts on December 1, 2017. Another spike in popularity came in March, through April of