Alocospira papillata

Alocospira papillata
Shell of Alocospira papillata
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Ancillariidae
Genus:	Alocospira
Species:	†A. papillata
Binomial name
†Alocospira papillata (Tate, 1889)
Synonyms
† Ancillaria papillataTate, 1889

Alocospira papillata is an extinct species of sea snail, a marine gastropod mollusk in the family Ancillariidae, the olives. ^[1]

Description

The length of the shell attains 25 mm, its diameter 9.25 mm. (Original description) This is a solid, cylindrically oblong shell. Its spire is shaped like a pyramid, tapering to a sharp point, and ends in a small, blunt pullus (the very tip of the spire) that sticks out.

The callus on the spire is smooth, shiny, and microscopically granular. It is decorated with narrow, sharply rounded spiral ridges of different sizes, with two or three smaller ridges often found between the larger ones. The aperture (the opening) makes up a little more than half of the shell's total length. ^[2]

Distribution

Fossils of this marine species were found in Tertiary strata on Victoria, Australia.

References

1. Alocospira papillata (Tate, 1889) . 212 August 2025. Retrieved through: World Register of Marine Species .
2. Tate, R. (1889). "The gastropods of the older Tertiary of Australia (Part II)". Transactions of the Royal Society of South Australia. 11: 146. Retrieved 12 August 2025. This article incorporates text from this source, which is in the public domain .

• Darragh, T. A. (2024). A checklist of Australian marine Cenozoic Mollusca. Memoirs of Museum Victoria. 83: 37-206.