Intraspecific variation was observed in a study of 177 well preserved specimens of the conodont Polygnathus brevilamina. Variations in the size of platform and in the degree of ornamentation of the platform are illustrated. These variations are present in juvenile specimens. The study indicates that the original definition of Polygnathus brevilamina is too narrow and that a broader concept of speciation is needed if conodont species are to be useable.
Proceedings of the Iowa Academy of Science
©1966 Iowa Academy of Science, Inc.
Anderson, Wayne I. and Ozias, Karen
"lntraspecific Variation Within the Conodont Polygnathus brevilamina,"
Proceedings of the Iowa Academy of Science, 73(1), 263-269.
Available at: https://scholarworks.uni.edu/pias/vol73/iss1/38