People Richard J. Twitchett peoplepill id: richard-j-twitchettRJT 5 views today 24 views this weekRichard J. TwitchettBiographyListsAlso ViewedListsRichard J. Twitchett is in following listsBy field of workNotable biologistsGender:MaleNotable scientistsGender:MaleBy work and/or countryNotable ScientistsGender:MaleNotable PaleontologistsGender:MaleFrom our partnersSponsoredRichard J. Twitchett