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Phenatoma decessor
Shell of † Phenatoma decessor (holotype)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Borsoniidae
Genus:	Phenatoma
Species:	†P. decessor
Binomial name
†Phenatoma decessor Marwick, 1928

Phenatoma decessor is an extinct species of sea snail, a marine gastropod mollusk in the family Borsoniidae.

Description

The length of the shell is 17 mm, its width 6 mm.

Marwick considered this species a direct ancestor of Phenatoma rosea to which it closely resembles in shape and ornamentation.

Distribution

This extinct marine species was endemic to New Zealand and fossils were found in fossiliferous beds of calcareous tuffs at Whenuaturu Peninsula.

References

1. ^ Marshall, B. (2015). Phenatoma decessor Marwick, 1928 †. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=831651 on 2016-03-21

• Beu, A.G. & Maxwell, P.A. (1990). "Cenozoic Mollusca of New Zealand". New Zealand Geological Survey Paleontological Bulletin. 58: 302.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• Maxwell, P.A. (2009). Cenozoic Mollusca. pp 232–254 in Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch.

External links

• Marwick, J. "The Tertiary Mollusca of the Chatham Islands including a generic revision of the New Zealand Pectinidae." Transactions of the New Zealand institute. Vol. 58. No. 4. 1928

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• Phenatoma
• Gastropods of New Zealand
• Borsoniidae stubs