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The Waco

Otter-like critter swam lakes and rivers in the age of dinosaurs

Otter-like critter swam lakes and rivers in the age of dinosaurs
Photo: Waco Tribune-Herald · view original

While dwarfed by most dinosaurs, Megacauda was twice as big as the next-largest member of the mammalian lineage in the Jurassic and displayed critical anatomical features shared with modern mammals.

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