Hypertext Webster Gateway: "Mezozoic"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Reptilian \Rep*til"i*an\ (-an), a.
Belonging to the reptiles.
{Reptilian age} (Geol.), that part of geological time
comprising the Triassic, Jurassic, and Cretaceous periods,
and distinguished as that era in which the class of
reptiles attained its highest expansion; -- called also
the {Secondary} or {Mezozoic} age.
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