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Re: Tyrannotitan, new carcharodontosaurid from Argentina



During this interval, the diplodocoid
sauropods and giant titanosaurians went extinct
(probably as part of a global-scale crisis),

What? Transgression?

The famous Cenomanian-Turonian boundary mass extinction. EXTREME heat worldwide, an Oceanic Anoxic Event, IIRC a carbon isotope ratio spike...