Zinsmeister, W. J. & Stilwell, J. D. (1990). First record of the family Ringiculidae (Gastropoda) from the middle Tertiary of Antarctica. Journal of Paleontology. 64: 373-376.
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Zinsmeister, W. J. & Stilwell, J. D.
1990
First record of the family Ringiculidae (Gastropoda) from the middle Tertiary of Antarctica