A new Middle Cambrian hexactinellid, Ratcliffespongia wheeleri, from western Utah, and skeletal structure of Ratciffespongia
Rigby, K.J.; Chuch, S.B. (1990). A new Middle Cambrian hexactinellid, Ratcliffespongia wheeleri, from western Utah, and skeletal structure of Ratciffespongia. J. Paleontol. 64(3): 331-334
In: Journal of Paleontology. The Paleontological Society: Tulsa, Okla.. ISSN 0022-3360; e-ISSN 1937-2337, more
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