- Review
The Hesperornithiformes: A Review of the Diversity, Distribution, and Ecology of the Earliest Diving Birds
- Alyssa Bell and
- Luis M. Chiappe
The Hesperornithiformes (sometimes referred to as Hesperornithes) are the first known birds to have adapted to a fully aquatic lifestyle, appearing in the fossil record as flightless, foot-propelled divers in the early Late Cretaceous. Their known fo...

