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Species List for Genus: Williamia
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Mollusca (Phylum) > Gastropoda (Class) > Heterobranchia (Subclass) > Euthyneura (Infraclass) > Tectipleura (Subterclass) > Siphonarimorpha (Superorder) > Siphonariida (Order) > Siphonarioidea (Superfamily) > Siphonariidae (Family) > Williamia (Genus)

  • Genus: Williamia

  • Williamia radiata (Pease, 1861)
    Length 8mm, Width 6mm
    Marine, Native - Non-endemic
    Western Pacific. Wanganella Bank, and Kermadec, Three Kings and North Island, as far south-east as Ranfurly Bank, from 0-135m
NZ Geographical Regions
Key to symbols used in Checklist.
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
R =
Recent
Sf =
Subfossil
Fo =
Fossil