Records of Nautiloidea (Mollusca: Cephalopoda) across the Cretaceous‐Tertiary boundary in Otago and Chatham Islands, New Zealand

Abstract

Mesozoic—Cenozoic shelf deposits throughout the world have a depauperate record of nautiloids when compared to that of other molluscs. The Cretaceous—Tertiary (K‐T) boundary record in New Zealand is no exception, with few recorded specimens at any given locality of only a few species. New findings across the K‐T boundary in Otago and Chatham Islands, New Zealand, include Eutrephoceras sp. (latest Cretaceous), Eutrephoceras allani (Fleming) (Early—Late Paleocene), and Aturia cf. A. mackayi (Fleming) (Late Paleocene).

Keywords:

• fossil Cephalopoda
• nautiloid
• Late Cretaceous
• Paleocene
• Cretaceous‐Tertiary (K‐T) boundary
• Eutrephoceras
• Aturia Otago
• Chatham Islands
• New Zealand