An animal or creature with two digits or two finger-like appendages.
From bi- (two) and dactyle from Greek daktylos (finger or digit). This zoological term describes organisms with exactly two functional digits or finger-like structures.
Many animals that seem to have multiple fingers or toes actually have only two functional digits—like ostriches and some dinosaurs—and calling them 'bidactyle' groups them with creatures whose evolution optimized for just two digits.
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