Wilckens, Otto. (1922). The Upper Cretaceous gastropods of New Zealand. <em>Paleontological Bulletin. New Zealand Geological Survey.</em> 9: viii + 1–42, pls. 1-5. page(s): 21 [details]
original descriptionWilckens, Otto. (1922). The Upper Cretaceous gastropods of New Zealand. <em>Paleontological Bulletin. New Zealand Geological Survey.</em> 9: viii + 1–42, pls. 1-5. page(s): 21 [details]
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