Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Ămyntor, ŏris, m., = Ἀμύντωρ, king of the Dolopians, and father of Phœnix, Ov. M. 8, 307; id. H. 3, 27.
Hence, Ămyn-tŏrĭdes, ae, m., son of Amyntor, i. e. Phœnix, Ov. A. A. 1, 337.