Rhamphorhynchus (, "beak snout") is a genus of long-tailed pterosaurs in the Jurassic period. Less specialized than contemporary, short-tailed pterodactyloid pterosaurs such as "Pterodactylus", it had a long tail, stiffened with ligaments, which ended in a characteristic soft-tissue tail vane. The mouth of "Rhamphorhynchus" housed needle-like teeth, which were angled forward, with a curved, sharp, beak-like tip lacking teeth, indicating a diet mainly of fish; indeed, fish and cephalopod remains are frequently found in "Rhamphorhynchus" abdominal contents, as well as in their coprolites.