Ceratocystis perneri Jaekel—a Middle Cambrian chordate with echinoderm affinities

12 3 Wed, 01/01/1969 - 12:00 September 494 535

JEFFERIES, R. P. S. 1969. Ceratocystis perneri Jaekel—a Middle Cambrian chordate with echinoderm affinities. Palaeontology, 12, 3, 494–535.

R. P. S. Jefferies The Palaeontological Association (Free Access)