being a freshwater aquatic predator with sharp teeth and a body prepared both to swim and to make use of its fin structures to hold on to the bottom of shallow watercourses or in soft ground near the riverbank

se cree que en el caso de Xenoceratops foremostensis

high-browing herbivores

un cuerno nasal más pequeño y dos protuberancias adicionales en la región de las mejillas

agile hindlimbs

Desmostylus hesperus Ichthyosaurus being a freshwater aquatic predatorDesmostylus hesperus was a semi aquatic marine mammal from the Miocene belonging to Desmostylia, an extinct order of mammals known exclusively from the North Pacific. Unlike sirenians, pinnipeds or cetaceans, desmostylians represented a distinct evolutionary lineage that has completely disappeared. They have traditionally been associated with Tethytheria, the broader evolutionary group that includes sirenians and proboscideans. The generic name means