• Webster's Revised Unabridged Dictionary
    • n Gastornis (Paleon) A genus of large eocene birds from the Paris basin.
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Century Dictionary and Cyclopedia
    • n gastornis A genus of gigantic Eocene birds found in the conglomerate below the plastic clay of the Paris basin. G. parisiensis was about as large as an ostrich, and is believed to have been a ratite or struthious bird, though referred to the Anatidæ by A. Milne-Edwards. The Diatryma gigantea of Cope, from the Eocene of New Mexico, is referred to the genus Gastornis by Coues. G. minor and G. edwardsi are other species recently discovered at Rheims in France. The additional material shows a remarkable character in the permanence of the cranial sutures, usually obliterated in adult birds.
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Webster's Revised Unabridged Dictionary
NL., from Gaston, M. Plante, the discover + Gr. bird