A bizarre new genus and species of mosasaur with teeth unlike those of any known reptile has been identified from fossils found in Morocco. Life reconstruction of Xenodens calminechari. Image credit: Andrey Atuchin. The mosasaurs were a group of lizards that became highly specialized for marine life in the mid-Cretaceous period. By the end of the Cretaceous, these creatures had undergone an adaptive diversification, and showed a wide range of body...