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Laevidentalium largicrescens (Tate, 1899)

Description: Shape moderately curved. Weight solid. Aperture diameter up to 8 mm. Apex sometimes with shallow notch. Sculpture smooth, glossy, without any longitudinal ribs Transverse sculpture oblique growth lines. Aperture circular Colour bone white to grey.

Size: Up to 55 mm in length.

Distribution: Global distribution unknown. Assumed to be endemic to Australia with a distribution from Lady Musgrave Island, central Qld, southwards to Bass Strait (Lamprell & Healy, 2008).

Habitat: Dredged from 284 to 3058 m. Uncommon.

Comparison: This species is similar to Laevidentalium crocinum and L. lubricatum. Lamprell & Healy (1998) provided the following points of comparison: L. largicrescens has a more expanded aperture; and there are also differences in colour (bone or grey-white in L. largicrescens, yellow or orange in L. crocinum, pure white in L. lubricatum), and curvature (L. largicrescens is less curved than the other two species).

Fig. 1: East of Merimbula, NSW, in 1600 m (C.174147).


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