ARCHAEOPTERYX
\ˈɑːkiːˌɒptəɹˌɪks], \ˈɑːkiːˌɒptəɹˌɪks], \ˈɑː_k_iː__ˌɒ_p_t_ə_ɹ_ˌɪ_k_s]\
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extinct primitive toothed bird of the Upper Jurassic having a long feathered tail and hollow bones; usually considered the most primitive of all birds
By DataStellar Co., Ltd
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extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds
By Princeton University