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Pteromyrtea motutaraensis

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Pteromyrtea motutaraensis
Temporal range: early Miocene
Pteromyrtea motutaraensis MA72123-a.jpg
Holotype from Auckland War Memorial Museum
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Lucinida
Family: Lucinidae
Genus:† Pteromyrtea
Species:
†P. motutaraensis
Binomial name
†Pteromyrtea motutaraensis

Pteromyrtea motutaraensis is an extinct species of bivalve, a marine mollusc in the family Lucinidae. [1] [2] Fossils of the species date to early Miocene strata of the west coast of the Auckland Region, New Zealand.

Contents

Description

In the original description, Powell described the species as follows:

Shell of moderate size, ovate, longer than high, somewhat inflated, rather thin. Beaks central. Lunule narrowly lanceolate. Anterior wing long and clearly marked off by a groove. Sculpture consisting of extremely fine regular concentric threads, about five per millimetre. Valve margins smooth. Hinge typical, as shown by a paratype. [3]

The holotype of the species measures 17 mm (0.67 in) in height and 21 mm (0.83 in) in length. [3] The species can be identified sue to its more oval outline than other members of Pteromyrtea . [3]

Taxonomy

The species was first described by A. W. B. Powell in 1935. [3] 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. [4] [5]

Distribution

This extinct marine species occurs in early Miocene strata of the Nihotupu Formation of New Zealand, on the west coast of the Waitākere Ranges of the Auckland Region, New Zealand. [4] The deposits of the Nihotupu Formation in the western Waitākere Ranges where fossils of the species have been founs are mid-bathyal 800–2,000 m (2,600–6,600 ft). [6]

References

  1. ↑ Pteromyrtea motutaraensis A. W. B. Powell, 1935 † . Retrieved through: World Register of Marine Species  on 20 January 2026.
  2. ↑ Maxwell, P.A. (2009). "Cenozoic Mollusca". In Gordon, D.P. (ed.). New Zealand Inventory of Biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Christchurch: Canterbury University Press. p. 236. ISBN   978-1-877257-72-8.
  3. 1 2 3 4 Powell, A. W. B. (1935). "Tertiary Mollusca from Motutara, West Coast, Auckland". Records of the Auckland Institute and Museum . 1: 327–340. ISSN   0067-0464. JSTOR   42905961. Wikidata   Q58676576.CC BY icon-80x15.png This article incorporates text from this source, which is under a CC BY 4.0 license.
  4. 1 2 Blom, Wilma M. (2025). "Annotated Catalogue of Fossil and Extant Molluscan Types in the Auckland War Memorial Museum". Bulletin of the Auckland Museum . 22. doi:10.32912/BULLETIN/22. ISSN   1176-3213. OCLC   1550165130. Wikidata   Q135397912.
  5. ↑ "Pteromyrtea motutaraensis". Collections Online. Auckland War Memorial Museum . Retrieved 20 January 2026.
  6. ↑ Eagle, Michael K. (December 1999). "A new Early Miocene Pseudarchaster (Asteroidea: Echinodermata) from New Zealand". New Zealand Journal of Geology and Geophysics . 42 (4): 551–556. doi:10.1080/00288306.1999.9514861. ISSN   0028-8306. Wikidata   Q104119200.
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