Restoration of Ichthyornis
"Ichthyornis, though the wings are well developed, with fused metacarpals, and the sternum is keeled, the vertebrae present the extraordinary primitive character of being biconcave." Elliot Coues, 1884. This bird is believed to come from the Cretaceous of North America and is a seabird."
Benjamin Franklin Mudge, bird anatomy, bird bones, bird fossils, bird skeleton, birds, extinct birds, Ichthyornis, Ichthyornis skeleton, Ichthyornis victor, late Cretaceous period birds, medium birds, ornithology, restoration of Ichthyornis victor, seabirds
Elliot Coues Key to North American Birds (Boston, MA: Estes and Lauriat, 1884)