Fossarus ambiguus, (LINNE, 1758)

Strong, Ellen E., 2011, More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda), Zoological Journal of the Linnean Society 162 (3), pp. 585-630 : 598

publication ID

https://doi.org/ 10.1111/j.1096-3642.2010.00687.x

persistent identifier

https://treatment.plazi.org/id/039687CF-FFCD-AB6F-FE8E-951FFCF4DBFD

treatment provided by

Valdenar

scientific name

Fossarus ambiguus
status

 

FOSSARUS AMBIGUUS (LINNÉ, 1758) View in CoL

Material examined

Atlantic Ocean: Mediterranean Sea: France: Corsica, Calvi ( USNM 857631).

Description

Marginal fold S-shaped ( Fig. 9A View Figure 9 ), terminating at posterior tip of sorting area; oesophageal aperture at apex of marginal fold recurved segment; sorting area triangular, with pointed posterior tip; left margin of sorting area straight; accessory marginal fold curving around posterior tip of sorting area; sorting area pad, anterior flap, and crescentic pads lacking; glandular pad forming small, rounded mound projecting short distance posteriorly behind gastric shield; single digestive gland duct opening at left of glandular pad; crescentic ridge forming small diverticulum from posterior end of glandular pad with proximal tip well posterior to digestive gland duct; accessory pads, caecum, and caecal folds lacking; U-shaped fold present below style sac aperture; typhlosoles unfused.

Remarks

Described by Houbrick (1990b: 69) simply as possessing a style sac, prominent gastric shield, large central ridge, a sorting area, and a single digestive gland duct.

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Littorinimorpha

Family

Planaxidae

Genus

Fossarus

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