During the Jurassic (200–145 million years ago [Ma]), New Zealand was mostly under the sea. Clockwise from top left: the bivalve Sakawairhynchia bartrumi (150 Ma); an ammonite, Lytoceras taharoaense (145 Ma); a snail imprint and its rubber cast, Poroa arata (220 Ma); lobster Mecochirus marwicki; belemnites Belemnopsis aucklandica (150 Ma); and the bivalve Camptonectes grandis.

These fossils are part of the GNS Science National Paleontological Collection.