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Its body was covered in external, hardened structures called sclerites, which are not found on modern entoprocts.

Also unlike modern-day entoprocts, C. tylodes was covered with distinctive, scalelike features called sclerites—a hint, the scientists say, that such armor may have been more common among ancestral entoprocts than has been previously recognized.

At the base of the wing, i.e. its attachment to the trunk, we find a highly complex series of small sclerites adapted for the varied movements necessary for flight.

Prostigmata.—Integument soft, strengthened by special sclerites, those on the ventral surface of the prosoma apparently representing the basal segments of the legs embedded in the skin.

The most active form of larva found in this family resembles in shape that of a ladybird, tapering towards the tail end, and having the trunk segments protected by small firm sclerites.