Tube foot preservation in the Devonian crinoid Codiacrinus from the Lower Devonian Hunsrück Slate, Germany

Fossilized tube feet are described on Codiacrinus schultzei Follmann from the Lower Devonian Hunsruck Slate of Germany. This is the first definitive proof of tube feet on any fossil crinoid. Three lightly pyritized, flattened tube feet are preserved in a single interray of this cladid crinoid. The tube feet were at least 7 mm long. Their preservation is very similar to the tube feet reported previously from a Hunsruck ophiuroid, except that the Codiacrinus tube feet have small papillae, similar to living crinoids.