Wright, C. W. & Wright, E. V. 1949. The Cretaceous echinoid genera Infulaster Desor and Hagenowia Duncan. The Annals and Magazine of Natural History, 12th Series 2, 454-474.
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Wright, C. W.; Wright, E. V.
1949
The Cretaceous echinoid genera Infulaster Desor and Hagenowia Duncan. The Annals and