By: Geoffrey Tresise
32 pages, 1 col & 30 b/w illus
Victorian scientists were puzzled by the hand-like footprints found in 200 year old sandstone quarried near Birkenhead. Even more baffling was the fact that the sandstone contained no fossil remains of the animal that made them. The mystery of the invisible dinosaur Chirotherium took more than a century to solve and makes an interesting geological detective story.
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