plural noun

: a family of extinct birds (order Ichthyornithiformes) from the Upper Cretaceous of North America that comprises the genus Ichthyornis and in some classifications Apatornis and possibly one other genus

Word History


New Latin, from Ichthyornith-, Ichthyornis, type genus + -idae

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Dictionary Entries Near Ichthyornithidae

Cite this Entry

“Ichthyornithidae.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Ichthyornithidae. Accessed 18 May. 2024.

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