New early Paleocene Mollusca from the Wangaloa Formation of South Island, New Zealand

J. D. Stilwell

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New Mollusca from the shallow marine, highly fossiliferous Wangaloa Formation of southeastern Otago are described. Genus- and species-level endemism in the "Wangaloan' fauna is marked and is probably a reflection of "greater New Zealand's' geographic and genetic isolation during the Paleocene. Although deposits containing early Paleogene Mollusca are generally rare in the Southern Hemisphere, comparisons of known Gondwana molluscan taxa and those of similar age in the Northern Hemisphere indicate that the Mollusca of the Wangaloa Formation have Early Paleocene affinites. Microfossil evidence supports an Early Paleocene age for the fauna. However, an uppermost Cretaceous age is indicated for the basal part of the Wangaloa Formation stratigraphically below the shell beds, but the K-T boundary has yet to be located. -from Author

Original languageEnglish
Pages (from-to)360-369
Number of pages10
JournalJournal of Paleontology
Issue number3
Publication statusPublished - 1 Jan 1993
Externally publishedYes

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