Irish elk(redirected from Megaceros (deer))
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A large extinct deer of the genus Megaloceros of the Pliocene, Pleistocene, and Holocene Epochs, having very large palmate antlers. Many fossil remains have been found in Irish peat bogs. Also called giant deer.
(Palaeontology) an extinct Eurasian giant deer of the Pleistocene genus Megaloceros, which had antlers up to 4 metres across