Mosasaur
Mosasaurs (from Latin "Mosa" meaning the 'Meuse river', and Greek σαύρος "sauros" meaning 'lizard') are an extinct group of large marine reptiles containing 38 genera in total. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known as aigialosaurs in the Early Cretaceous. During the last 20 million years of the Cretaceous period (Turonian-Maastrichtian ages), with the extinction of the ichthyosaurs and pliosaurs, mosasaurs became the dominant marine predators. They became extinct as a result of the K-Pg event at the end of the Cretaceous period, about 66 million years ago.
Joan Wiffen
In 1975 Wiffen discovered the first dinosaur fossils in New Zealand in the Maungahounga Valley in Northern Hawkes Bay. Her first discovery was the tail bone of a theropod dinosaur. Her later finds included bones from a hypsilophodont, a pterosaur, an ankylosaur, mosasaurs and plesiosaurs. In 1999, Wiffen discovered the vertebra bone of a titanosaur in a tributary of the Te Hoe River. The fossils Wiffen found are primarily held in a GNS Science collection.