Amalda australis

Amalda australis, common name the southern olive, is a medium-sized sea snail, a gastropod mollusc of the family Ancillariidae.[1] These predatory snails live in the inter-tidal sand,[2] an environment that lends itself to high probability of fossilization.[3] Amalda australis fossils date back to the Pliocene and reveal morphological stasis.[4]

Amalda australis
A shell of Amalda australis
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Family: Ancillariidae
Genus: Amalda
Species:
A. australis
Binomial name
Amalda australis
(Sowerby, 1830)
Synonyms
  • Amalda (Baryspira) australis (G. B. Sowerby I, 1830)· accepted, alternate representation
  • † Amalda waikopiroensis (Suter, 1917)
  • Ancillaria australis G.B. Sowerby I, 1830 (original combination)
  • Ancillaria pyramidalis Reeve, 1864
  • Baryspira australis (G.B. Sowerby I, 1830)
  • † Baryspira australis epacra Olson, 1956

Distribution
A live Amalda australis collected from seagrass bed at Kohimarama Beach, Auckland

This marine species is endemic to New Zealand.[2]

References
  1. Sartori, A.; Rosenberg, G. (2014). Amalda australis (G.B. Sowerby I, 1830). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=409967 on 2014-01-30
  2. Michaux, B. (1987). "An analysis of allozymic characters of four species of New Zealand Amalda (Gastropoda: Olividae: Ancillinae)". New Zealand Journal of Zoology. 14 (3): 359–366. doi:10.1080/03014223.1987.10423006. ISSN 0301-4223.
  3. Gemmell, Michael R.; Trewick, Steven A.; Hills, Simon F. K.; Morgan‐Richards, Mary (2019). "Phylogenetic topology and timing of New Zealand olive shells are consistent with punctuated equilibrium". Journal of Zoological Systematics and Evolutionary Research. 58 (1): 209–220. doi:10.1111/jzs.12342. ISSN 0947-5745.
  4. Michaux, B. (1989). "Morphological variation of species through time". Biological Journal of the Linnean Society. 38 (3): 239–255. doi:10.1111/j.1095-8312.1989.tb01577.x. ISSN 0024-4066.
  • Sowerby G.B. I (1830). Species Conchylirum or concise original descriptions and accompanied by figures of all the species of Recent shells, with their varieties. G.B. Sowerby, London. page(s): Species 27, pl. 211, fig. 1,2
  • Powell A W B, New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
  • Glen Pownall, New Zealand Shells and Shellfish, Seven Seas Publishing Pty Ltd, Wellington, New Zealand 1979 ISBN 0-85467-054-8
  • Spencer, H.G., Marshall, B.A. & Willan, R.C. (2009). Checklist of New Zealand living Mollusca. Pp 196-219. in: Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch.
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