Tanystropheus, whose name means "long vertebra," was a remarkable marine reptile from the Middle Triassic, about 242 million years ago. Its most striking feature was its extraordinary neck, which could reach three meters long, longer than its body and tail combined, and was made of elongated, rod-like vertebrae that were surprisingly light and hollow. Despite its fragile appearance, this neck was reinforced by interlocking ribs, and Tanystropheus likely used it to hunt fish and squid from rocky shores and shallow waters while keeping its body safely on land. Growing to around six meters in total length, it had a small head armed with sharp, interlocking teeth perfect for snatching slippery prey. Fossil remains have been found across Europe, the Middle East, and China, and its extreme neck continues to fascinate paleontologists studying how such a bizarre body plan could have evolved.
