question: Avian species such as Anchiornis huxleyi and Xiaotingia zhengi are from which time period ?
answer: late Jurassic period
turker_answer: Avian species such as Anchiornis huxleyi and Xiaotingia zhengi are from the late Jurassic time period .
rule-based: Avian species such as Anchiornis huxleyi and Xiaotingia zhengi are from late Jurassic period time period .