NZ Mollusca

Anisodonta (Tahunanuia) alata trigonia (Powell, 1952)

Anisodonta alata trigonia
Holotype, dredged in Perseverance Harbour, Campbell Island, NZ (MA72202), 4.5mm © Auckland Museum CC BY
Classification: Mollusca - Bivalvia - Heterodonta - Sportellidae - Anisodonta (Tahunanuia)
Size/Grows to: Width 4.8mm, Height 3.5mm
Distribution: Off Campbell Island [An.]
Notes: Endemic. Shorter and more trigonal than alata and has the umbonal-ventral ridge stronger and distinctly angulate
Some known Localities
  • Perseverance Harbour, Campbell Island, 33 metres, Sub-antarctic Islands, NZ, (holotype)
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.405)
  • Powell, A.W.B. 1952: New Zealand Molluscan Systematics with Descriptions of New Species: Part 1, Records of the Auckland Institute and Museum, 4(3) (p.171)

Note: Localities are approximate, and represent only some of the known localities for the species.