Archaeopteryx Archaeopterygiformes • Archaeornis · · · Info · Definitions · Synonyms · Characters · · Archaeopteryx · · Text Latin · · Script 13 · · Length Definitions · · · (noun) extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds. Synonyms: archaeopteryx, archeopteryx, Archaeopteryx lithographica. · · Noun Definition 1 Synonyms · · · archeopteryx · · Synonym 1 archaeopteryx lithographica · · Synonym 2 Characters · · A latin capital letter a U+0041 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074 x latin small letter x U+0078 y latin small letter y U+0079