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) 2018, due to the concerns about user privacy raised by the "#deletefacebook" effort. Mastodon, along with a number of other alternative social media sites, saw a large uptick in membership, gaining thousands of new members in the period of a few hours compared to dozens in days prior, following Tumblr's announcement of intent in early December 2018 to ban all sensitive content from their site. Mastodon (software) Mastodon is a distributed, federated social network that forms part of the Fediverse, an interconnected and decentralized network of independently operated servers. Mastodon has microblogging features similar to Twitter. Each user is a