By the end of the Cretaceous, the last theropods still ranged from giant bone-crushing hunters to smaller, lighter, faster forms, with birds overhead carrying the branch into the future. In North America and Asia, tyrannosaurids dominated the role of giant apex predator, while in southern continents abelisaurids filled a similar large-bodied role. Around them lived smaller theropods with very different builds and habits—sickle-clawed dromaeosaurids, long-legged ornithomimosaurs, and other small coelurosaurs—showing that the branch had not narrowed to one final shape. Late Maastrichtian sites in Europe also suggest a diverse mix of small theropods and avialans right near the end.

Their lifestyles reflected that variety. Some were giant ambush or pursuit predators with massive skulls and powerful bites. Others were built for speed, agility, or smaller prey. Some likely chased, some scavenged, some snapped up little animals, and some had begun leaning fully into the avian way of life. Even near the end, theropods were still experimenting within their winning blueprint: strong hind legs, balancing tails, grasping forelimbs or winged descendants, sharp senses, and body plans tuned for active lives. The latest European record in particular points to several small-bodied theropod niches existing side by side rather than one generic “last raptor” type.

Their broader journey is one of the great stories in evolution. Theropods began in the Late Triassic and, including birds, have lasted roughly 170 million years. Over that immense stretch of time, they produced towering predators, strange beaked forms, feathered runners, and finally the only dinosaurs still alive today: birds. So the last theropods were not just the closing scene of a dying branch. They were the final non-avian chapter of a lineage still full of variety, while one winged part of that same branch crossed the K–Pg boundary and kept going.