Bowen, Z. P.; Campbell, J. D. (1973). Systematics and evolution of the brachiopod genus Rhizothyris in the Oligocene—Miocene of New Zealand. Journal of the Royal Society of New Zealand. 3(2): 141-160.
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Bowen, Z. P.; Campbell, J. D.
1973
Systematics and evolution of the brachiopod genus Rhizothyris in the Oligocene—Miocene of New Zealand