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ichthyornis

Ichthyornis is a 11 letter word which starts with the letter I and ends with the letter S for which we found 1 definitions.

Definition
(n.) An extinct genus of toothed birds found in the American Cretaceous formation. It is remarkable for having biconcave vertebrae and sharp conical teeth set in sockets. Its wings were well developed. It is the type of the order Odontotormae.
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