19
4
November
767
771
BRUNTON, C. C. 1976. Micro-ornamentation of some spiriferide brachiopods. Palaeontology, 19, 4, 767–771.
C. Howard C. Brunton The use of the term microspine by Balinski (1975) for a variety of structures on several taxa of spiriferides is discussed and, in part, rejected. Balinski described two distinct structures; true microspines and a papillose ornamentation resulting from external shell erosion. Evidence for a microspinose ornamentation on species of Crurithyris is presented together with models distinguishing the growth of spines in spiriferides from that in productaceans. The Palaeontological Association (Free Access)