Author: ZAMORA, S. ET AL.
Title: The ontogeny of cinctans (stem-group Echinodermata) as revealed by a new genus, Graciacystis, from the middle Cambrian of Spain.
Description: 2013. Palaeontology 56-2; pp. 399-410, 8 fig./phot./plt. Orig. extract, stapled, 4to.

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