Sauropod

The scientists say they unearthed two enormous vertebrae and a femur, or thigh bone, of a plant-eating sauropod species called Alamosaurus.

His most memorable work is an illustrated compendium of dinosaurian copulatory positions - a sort of reptilian Kama Sutra - that includes a “leg over” manoeuvre by the sauropods, the largest dinosaurs of all - that many consider highly dubious.