Gurmatia

Taxobox
name = "Gurmatia"


image_width = 240px
image_caption =
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
subclassis = Orthogastropoda
ordo = Heterostropha
superfamilia = Pyramidelloidea
familia = Pyramidellidae
subfamilia = Chrysallidinae
genus = "Gurmatia"
genus_authority = Dance & Eames, 1966
subdivision_ranks = Species
subdivision = See text.

"Gurmatia" is a small genus of pyramidellid gastropod mollusks or micromollusks. This genus is currently placed in the the subfamily Chrysallidinae, of the family Odostomiidae.

The genus is known only from fossils (Holocene).

hell description

The shell in this genus is small, ovate-conic, thin and translucent. The protoconch is heterostrophic and smooth, and it is obliquely immersed in the first adult whorl.

The adult shell has spiral chords which are separated by deep grooves. The spiral chords have numerous transverse threads in their intervals.

The straight, vertical aperture lacks the fold that most members of Odostomiinae have. The shell opening (Aperture) is truncate-subovate.

Compared to "Euparthenia" Thiele, 1929, "Gurmatia" lacks a columellar fold and has no axial ribs. Compared to "Monotygma" J. E. Gray, 1847 (="Actaeopyramis" Fisher, 1885) it is considerably smaller, and is more strongly shouldered.

Life habits

Little is known about the biology of the members of this genus. As is true of most members of the Pyramidellidae "sensu lato", they were most likely ectoparasites.

pecies within the genus "Gurmatia"

* "Gurmatia wilkinsi" (De Folin in De Folin & Périer, 1873) (Type species)
* "Gurmatia pulchrior"

References

* cite journal
author = Dance, S. P. & Eames, F. E.
year = 1956
date=
title = New molluscs from the Recent Hamar formation of South-East Iraq.
journal = Proceedings of the Malacological Society of London
volume = 37
issue =
pages = 35–44
issn =
doi =