Pteromyrtea motutaraensis is an extinct species of bivalve, a marine mollusc in the family Lucinidae. Fossils of the species date to early Miocene strata of the west coast of the Auckland Region, New Zealand.
In the original description, Powell described the species as follows:
The holotype of the species measures in height and in length. The species can be identified sue to its more oval outline than other members of Pteromyrtea.
The species was first described by A. W. B. Powell in 1935. The holotype was collected at an unknown date prior to 1935 from fallen rocks at southern Maukatia Bay, south of Muriwai, Auckland Region (then more commonly known as Motutara), and is held in the collections of Auckland War Memorial Museum.
This extinct marine species occurs in early Miocene strata of the Nihotupu Formation of New Zealand, on the west coast of the WaitÃÂkere Ranges of the Auckland Region, New Zealand. The deposits of the Nihotupu Formation in the western WaitÃÂkere Ranges where fossils of the species have been founs are mid-bathyal .