Rhamphorhynchus gemmingi, skeleton #1 Iguanodon the first four pairs of

the first four pairs of legs were used for walking and the fifth pair was modified into a set of paddle-like flippers

Mammoths would probably weigh in the region of 6-8 tons

Ediacaran (=Vendian) period

naming it for the "dental pavement" on both the upper and lower jaws

Rhamphorhynchus gemmingi, skeleton #1 Iguanodon the first four pairs ofRhamphorhynchus, meaning "beak snout", is a genus of long tailed pterosaurs from 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 diamond shaped vane. The jaws of Rhamphorhynchus housed needle like teeth, which were angled forward, with a curved, sharp, beak like tip lacking teeth, indicating a diet mainly