< New Latin (1872) < Greek ichthy- ichthy- ( def. ) + órnis “bird”
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They suspect the jointed beak was present in even older birds, because the rest of the specimen indicates it was a relative of Ichthyornis, another ancient bird that lived about 20 million years earlier.
From Science Magazine ● Nov. 30, 2022
Several skulls of its older Ichthyornis relative have been described in recent years with bones that suggested the bird’s upper palate might have been jointed, but the evidence was still fuzzy.
From Science Magazine ● Nov. 30, 2022
Fort Hays State University undergraduate Kris Super found the new Ichthyornis specimen in 2014, unearthing it from the 82- to 87-million-year-old-rocks of Kansas’s Niobrara Chalk.
From National Geographic ● May 2, 2018
But chambers on each side of the skull suggest Ichthyornis had large jaw muscles more similar to those of its dinosaurian ancestors.
From Scientific American ● May 2, 2018
The largest collection of toothed birds, including the types of Hesperornis, Ichthyornis and others, is in the Yale University Museum, at New Haven.
From Animals of the Past by Lucas, Frederic A.
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