Placostylus ambagiosus hinemoa

Taxobox
name = "Placostylus ambagiosus hinemoa"


image_caption =
status = EX
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
ordo = Pulmonata
familia = Bulimulidae
genus = "Placostylus"
species = "P. ambagiosus"
subspecies = "P. ambagiosus hinemoa"
trinomial = "Placostylus ambagiosus hinemoa"
trinomial_authority = Powell, 1947

"Placostylus ambagiosus hinemoa" was a subspecies of very large, air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Bulimulidae, the bulimulus snails and their allies.

This subspecies of snail is extinct.

Dsitribution

This large land snail was endemic to the Cape Maria van Diemen area in Northland in the North Island of New Zealand. It is found only on the offshore island of Motuopao.

Habitat

This snail is found only as subfossils in consolidated dunes.

hell description

Compared with the typical "Placostylus ambagiosus" subspecies, this shell is of much heavier build and is proportionately broader with a greater spire angle. All five apertural processes are developed but the basal lip tubercle is the strongest.

The shell height is up to 82 mm, and width up to 37 mm.

References

* Powell A. W. B., "New Zealand Mollusca", William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1