Ichthyornis

Extinct genus of birds

Ichthyornis (meaning "fish bird", after its fish-like vertebrae) is an extinct genus of toothy seabird-like ornithuran from the Late Cretaceous of North America. Its fossil remains are mostly known from the chalks of Alberta, Alabama, Kansas (Greenhorn Limestone), New Mexico, Saskatchewan, and Texas, in strata that were laid down in the Western Interior Seaway, spanning from the Cenomanian to the Campanian ages of the Late Cretaceous. Ichthyornis is a common component of the Niobrara Formation fauna, and numerous specimens have been found.

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