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Etymology from Wiktionary, CC BY-SA 4.0.
mesosaur
Today it means: Any of a group of small aquatic reptiles, from the early Permian period, of the order †Mesosauria. Full definition →
Today it means: Any of a group of small aquatic reptiles, from the early Permian period, of the order †Mesosauria. Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.