On the structure and relationships of a new Pennsylvanian species of the seed Pachytesta

12 3 September 382 387

TAYLOR, T. N., EGGERT, D. A. 1969. On the structure and relationships of a new Pennsylvanian species of the seed PachytestaPalaeontology12, 3, 382–387.

Thomas N. Taylor and Donald A. Eggert The Palaeontological Association (Free Access)