1. In other vertebrates, the number of cervical vertebrae can range from a single vertebra in amphibians, to as many as 25 in swans or 76 in the extinct plesiosaur Elasmosaurus.

2. 28 The lake monster, like that of Loch Ness, is supposed to be akin to a plesiosaur, a kind of a long-necked aquatic dinosaur thought to have been an herbivore.