from or referring to the period of time between around 245 and 208 million years ago, in which dinosaurs (= large reptiles that no longer exist) first appeared:

]]>https://definedictionarymeaning.com/topic/231704/the-triassicsRSS for NodeWed, 24 Jun 2026 00:56:16 GMTSun, 08 Aug 2021 09:24:52 GMT60the Triassic period (= between around 245 and 208 million years ago) :

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