Abstract
Two fossil species of vesicomyids are described from Lower to Middle Miocene hydrocarbon seep carbonates in eastern North Island, New Zealand. One elongate species is proposed as a new genus and species: Notocalyptogena neozelandica. The other species probably belongs to the genus Pliocardia, but due to poor preservation is not identified further. The composition of this Miocene vesicomyid seep fauna differs from that found in modern New Zealand seeps located on the offshore Hikurangi convergent margin, which contain the genera Calyptogena, Archivesica, and Isorropodon. The fossil fauna went extinct locally after the Middle Miocene and has been since replaced by the modern vesicomyid taxa.
Highlights
Two fossil species of vesicomyids are described from Lower to Middle Miocene hydrocarbon seep carbonates in eastern North Island, New Zealand
One elongate species is proposed as a new genus and species: Notocalyptogena neozelandica
The other species probably belongs to the genus Pliocardia, but due to poor preservation is not identified further
Summary
Two fossil species of vesicomyids are described from Lower to Middle Miocene hydrocarbon seep carbonates in eastern North Island, New Zealand.
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