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Laubenfels, M.W. de. (1955). Porifera. Pp. E21-E112. In: Moore, R.C. (Ed.), Treatise on Invertebrate Paleontology. Part E, Archaeocyatha and Porifera. Geological Society of America and University of Kansas Press: New York & Lawrence, Kansas. i-xviii, E1-E122.
Laubenfels, M.W. de. (1955). Porifera. Pp. E21-E112. In: Moore, R.C. (Ed.), Treatise on Invertebrate Paleontology. Part E, Archaeocyatha and Porifera. Geological Society of America and University of Kansas Press: New York & Lawrence, Kansas. i-xviii, E1-E122.
