[F] Niobrara Chalk Formation - Kansas - US
Kansas - US
Apatornis celer ~/~ -Ornithothoraces Ornithurae - Cretaceous Late Coniacian Santonian Campanian
Baptornis advenus ~/~ - Ornithurae [Hesperonithiformes] [Baptornithidae] - Cretaceous Late Santonian Campanian
Claosaurus agilis - Ornithopoda Hadrosauridae - Cretaceous Late Campanian
Colonosaurus mudgei ~/~ - Cartinatae Ichtyornithiformes - Cretaceous Late
Graculavus agilis ~/~ - Cartinatae Ichtyornithiformes - Cretaceous Late
Guildavis tener ~/~ - Cartinatae Ichtyornithiformes - Cretaceous Late Santonian Campanian
Hadrosaurus agilis - Ornithopoda Hadrosauridae - Cretaceous Late Campanian
Hargeria gracilis ~/~ - Ornithurae [Hesperonithiformes] - Cretaceous Late Coniacian Santonian Campanian
Hesperornis crassipes ~/~ - Ornithurae [Hesperonithiformes] - Cretaceous Late Coniacian Santonian Campanian
Hesperornis gracilis ~/~ - Ornithurae [Hesperonithiformes] - Cretaceous Late Coniacian Santonian Campanian
Hesperornis regalis ~/~ - Ornithurae [Hesperonithiformes] - Cretaceous Late Coniacian Santonian Campanian Maastrichtian
Hierosaurus coleii - Ankylosauria Nodosauridae - Cretaceous Late Campanian
Hierosaurus sternbergi - Ankylosauria Nodosauridae - Cretaceous Late Campanian
Iaceornis marshi ~/~ - Ornithothoraces Ornithurae - Cretaceous Late Coniacian Santonian Campanian
Ichthyornis agilis ~/~ - Cartinatae Ichtyornithiformes - Cretaceous Late
Ichthyornis celer ~/~ - Ornithothoraces Ornithurae - Cretaceous Late Coniacian Santonian Campanian
Ichthyornis dispar ~/~ - Cartinatae Ichtyornithiformes - Cretaceous Late Coniacian Santonian Campanian
Ichthyornis tener ~/~ - Cartinatae Ichtyornithiformes - Cretaceous Late Coniacian Santonian Campanian
Lestornis crassipes ~/~ - Ornithurae [Hesperonithiformes] - Cretaceous Late Coniacian Santonian Campanian
Niobrarasaurus coleii - Ankylosauria Nodosauridae -Cretaceous Late Campanian
Nodosaurus textilis - Ankylosauria Nodosauridae - Cretaceous Early Cretaceous Late Albian Cenomanian Turonian Coniacian Santonian Campanian
Parahesperornis alexi ~/~ - Ornithurae [Hesperonithiformes] - Cretaceous Late Coniacian Santonian Campanian