Scientists want to split Tyrannosaurus rex into three species. Not everyone is happy - Sydney Morning Herald

A team of researchers say variations they spotted in an examination of Tyrannosaurus fossils warranted the recognition of two additional species: T. imperator, meaning “tyrant lizard emperor,” and T. regina, meaning “tyrant lizard queen”.

Ultimately, to me, this variation is very minor and not indicative of meaningful biological separation of distinct species that can be defined based on clear, explicit, consistent differences, Univer… [+1644 chars]

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