Beaver, H. H., 1967, Morphology, in Moore, R. C., ed., Treatise on Invertebrate Paleontology, P. S297-S650: v. 2 (Blastoids), p. S300-S344.
Kermack, K. A., 1954, A biometrical study of Micraster coranguinum and M. (Isomicraster) senonensis: Royal Society of London, Philosophical Transactions, Series B, v. 237, p. 375-428.
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