Late cretaceous mollusca from the chatham Islands, New Zealand

Jeffrey D. Stilwell

Research output: Contribution to journalArticleResearchpeer-review

22 Citations (Scopus)

Abstract

The Cretaceous Mollusca (Bivalvia, Gastropoda, Scaphopoda) from the Chatham Islands, New Zealand consists of a moderately diverse faunule of 37 species in the Kahuitara Tuff of Pitt Island. At least 16 (c.43%) of the taxa are conspecific with mainland New Zealand species and at least 15 (c.41%) taxa are endemic to Chatham Islands. New species proposed are Crenella n. sp., Chlamys (Lyriochlamys) n. sp., Chlamys s. l. n. sp., Camptonectes n. sp., Eburneopecten freneixae n. sp., Dimyodon n. sp., Purpurocardia n. sp., Lahillia n. sp., Solyma flemingae n. sp., Brookula s. l. n. sp., Calliomphalus s. l. n. sp., Pyrgulifera kahuitara n. sp., and Ageria? n. sp. Most taxa (c.41%) are epifaunal suspension feeding bivalves and dominate the Cretaceous macrofauna. Less dominant are infaunal suspension feeding bivalves (30%). Epifaunal browsers (c.14%), deposit feeders (8%) and carnivores (5%) are minor components. An open marine, shallow shelf environment is advocated. A latest Cretaceous (Campanian?-Maastrichtian) age is supported for the Kahuitara Tuff macrofossils.

Original languageEnglish
Pages (from-to)29-85
Number of pages57
JournalAlcheringa
Volume22
Issue number1
DOIs
Publication statusPublished - 1 Jan 1998

Keywords

  • Bivalvia
  • Chatham Islands
  • Gastropoda
  • Late cretaceous
  • Mollusca
  • New Zealand
  • Palaeoecology
  • Scaphopoda
  • Systematics

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