"Ventral view of a restoration of Palaeophonus Hunteri, Pocock, the Silurian scorpion from Lesmahagow,…
"Dorsal view of a restoration of Palaeophonus nuncius, Thorell. The Silurian scorpion from Gothland."…
"Comparison of the sixth prosomatic limb of a recent scorpion (B), of Palaeophonus (C), and of Limulus…