A Gervais’ beaked whale, a very rare species of whale that lives 300 miles+ offshore, was found alive on the beach in Emerald Isle, North Carolina late last month.

Source: https://www.wccbcharlotte.com/2023/11/10/whale-calf-dies-on-a-north-carolina-beach-after-ingesting-a-balloon/

Dating to the Cretaceous Period, it shows the four-legged mammal Repenomamus robustus - the size of a domestic cat - ferociously entangled with the beaked two-legged dinosaur Psittacosaurus lujiatunensis - as big as a medium-sized dog.

Source: https://www.channelnewsasia.com/world/dramatic-fossil-shows-pugnacious-mammal-attacking-dinosaur-3637266?cid=cna_flip_070214

Deep-diving whales that feed primarily on squid in offshore waters were estimated to be 3,000 pilot whales, 148 and 5,000 beaked whales of several different species.

Source: https://phys.org/news/2023-10-population-million-whales-dolphins-porpoises.html

The fossil shows a badgerlike creature chomping down on a small, beaked dinosaur, their skeletons intertwined.

Source: https://www.reddeeradvocate.com/news/mammals-may-have-hunted-down-dinosaurs-for-dinner-rare-fossil-suggests/