Ichthyosaurus was a marine reptile that dominated the Mesozoic seas from the Triassic to the Late Cretaceous period. Resembling modern dolphins, they represent a prime example of convergent evolution, adapting optimally to life in vast oceanic environments. Their fascinating discovery was first revealed by excavations in 19th-century England, shedding unprecedented light on prehistoric marine life. In This Article Understanding IchthyosaursIchthyosaurs were not dinosaurs but a distinct order of Mesozoic marine reptiles. The name comes from the Greek words for “fish” and “lizard”. Weird combina…