Seward, A.C. & Smith-Woodward, A. (1905)
Permo-Carboniferous Plants and Vertebrates from Kashmir.
Memoirs of Geological Survey of India, Palaeontologica India, New Series, 1905, 2(2): 1–13
Seward, A.C. (1894)
A new British Carboniferous Fossil.
The Naturalist, 1894: 233–240, Pl. I
