Ichthyostega was a fairly large animal, broadly built and about 1.5 m (4.9 ft) long. The skull was flat with dorsally placed eyes and armed with large labyrinthodont teeth. The posterior margin of the skull formed an operculum covering the gills. The spiracle was situated in an otic notch behind each eye.. The limbs were large compared to contemporary relatives, and it had seven digits on each ... More @Wikipedia
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