A new genus and species of pachycormiform fish that lived 150 million years ago has been identified from fossils found in the Neuquén Basin of Argentina. Life reconstruction of Kaykay lafken. Image credit: Martina Charnelli. Pachycormiformes is a large order of extinct ray-finned fishes known from marine deposits of Eurasia, the Americas and Antarctica. They inhabited the oceans of the Early Jurassic and the Late Cretaceous epochs, from 182 to 66...
