The Great Fossil Enigma

Blieck, A., Turner, S., Burrow, C. J., Schultze, H-P., Rexroad, C. B., Bultynck, P. and Nowlan, G. S. 2010. Fossils, histology, and phylogeny: Why conodonts are not vertebrates. Episodes 33: 234-241.

Sweet, W. C. and Cooper, B. J. 2008. Classic Paper: C. H. Pander's (1856) Introduction to Conodonts. Episodes 31: 431-436.