Turbonilla favilla

Turbonilla favilla is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.[3][4]

Turbonilla favilla
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
Superfamily:
Pyramidelloidea
Family:
Pyramidellidae
Subfamily:
Turbonillinae
Genus:
Turbonilla
Species:
T. favilla
Binomial name
Turbonilla favilla
Dall & Bartsch, 1909
Synonyms
  • Chemnitzia coelata Carpenter, 1865
  • Turbonilla (Pyrgiscus) favilla Dall & Bartsch, 1909 [1]
  • Turbonilla (Pyrgiscus) hypocurta Dall & Bartsch, 1909 [2]

Description

The quite large, ashy shell has an elongate shape. the length of the shell measures 8.8 mm.(The whorls of the protoconch are decollated). The 13 whorls of the teleoconch are flattened. They are separated by weakly impressed sutures. There are 20 to 28 axial ribs, straight, subacute, and suddenly truncated at the periphery. The intercostal spaces are marked by 4 to 5 deeply impressed spiral grooves, which pass up on the sides of the ribs but do not cross their summits. The periphery of the body whorl is angulated. The base of the shell is short, and marked by 6 spiral lines. The aperture is subquadrate. The columella is strongly twisted. The shell is remarkable for its deep furrow and the suddenly shortened and spirally sculptured base.[5]

Distribution

Dr. Carpenter thought the type specimen was found in the Pacific Ocean off Panama (type specimen without locality mark).

References
  1. Dall & Bartsch (1909), A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, p. 78
  2. The Nautilus, vol. XXXIX July 1925 to April 1926
  3. WoRMS (2011). Turbonilla favilla Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=576013 on 2012-03-01
  4. Keen M. (1971). Sea shells of Tropical West America. Marine mollusks from Baja California to Perú. (2nd edit.). Stanford University Press pp. 1064
  5. Carpenter, Ann. Mag. Nat. Hist., 3d ser., vol. 15, 1865, p. 400
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