Placostylus ambagiosus gardneri

Taxobox
name = "Placostylus ambagiosus gardneri"


image_caption =
status = EX
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
ordo = Pulmonata
familia = Bulimulidae
genus = "Placostylus"
species = "P. ambagiosus"
subspecies = "P. ambagiosus gardneri"
trinomial = "Placostylus ambagiosus gardneri"
trinomial_authority = Powell, 1951

"Placostylus ambagiosus gardneri" 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 large land snail is extinct.

Distribution

This subspecies was endemic to the North Cape area in Northland in the North Island of New Zealand.

Habitat

This subspecies is found as subfossils in consolidated sand dunes at Tom Bowling Bay, Waikuku, and Whareana.

hell description

This was the heaviest built of all the New Zealand "Placostylus" species and subspecies. All five of the apertural processes are well developed, especially the parietal tubercle, which is either vestigial or absent in the other subspecies.

The shell height is up to 81 mm, and width up to 34 mm.

References

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