Struthiolaria incrassata
Struthiolaria incrassata is an extinct species of sea snail, a marine gastropod mollusc in the family Struthiolariidae. Fossils of the species date to late Pliocene strata of the Tangahoe Formation in New Zealand.Description
In the original description, Powell described the species as follows:
The holotype of the species has an estimated height of, and a diameter of. It is a small member of its genus, and can be identified due to having only two prominent spiral cords. It can be distinguished from a morphologically similar species, Pelicaria parva, due to parva having a third, prominent narrow carina located between the two major carina, the upper carina being nodulous.Taxonomy
The species was first described by A. W. B. Powell in 1931, who used the name Struthiolaria incrassata. While the accepted name became Pelicaria incrassata, in 2010 based on a suggestion by Phillip A. Maxwell, A. G. Beu placed the species in the genus Struthiolaria, due to the relatively tall and narrow shape, the species only having two spiral cords, the small aperture, the thickened sinuous lips and the large parietal tubercule. The holotype was collected in January 1931 from near the mouth of Waihi Stream near Hāwera, Taranaki, and is held in the collections of Auckland [War Memorial Museum].Distribution
This extinct marine species occurs in late Pliocene strata of the Tangahoe Formation, primarily associated with the Taranaki and Manawatū–Whanganui regions of New Zealand. Fossils of the species have been found near Hāwera, South Taranaki.