Fallow deer are the sole survivors of the Megacerines, a diverse deer lineage that was widespread and abundant early in the Ice Ages. (Their most famous member was the extinct Irish elk.) Fallow bucks carry flat antlers that are the largest among Old World deer and are the largest relative to their body size. The antlers (about 60 cm [2 feet] long) are broad, are flattened at the ends, and have a number of short tines; it is the only Old World deer with flat antlers.