ornitholite
/ˈɔːnɪθə(ʊ)lʌɪt/Geology. Now historical and rare
noun
A fossil formed from the remains of a bird.
Origin
Early 19th century; earliest use found in Amos Eaton (1776–1842). From ornitho- + -lite, after scientific Latin Ornitholithus (Linnaeus Systema Naturae) or French ornitholithe.