Seguenzia cf. keikoae Poppe, Tagaro & Dekker, 2006

Helwerda, Renate Ariane, Wesselingh, Frank Pieter & Williams, Suzanne T., 2014, On some Vetigastropoda (Mollusca, Gastropoda) from the Plio-Pleistocene of the Philippines with descriptions of three new species, Zootaxa 3755 (2), pp. 101-135: 108

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Seguenzia cf. keikoae Poppe, Tagaro & Dekker, 2006


Seguenzia cf. keikoae Poppe, Tagaro & Dekker, 2006 

(Figures 6–7)

cf. 2006 Seguenzia keikoae  nov. spec.—Poppe, Tagaro & Dekker: p. 27, pl. 5, fig. 3. cf. 2008 a Seguenzia keikoae  —Poppe & Tagaro: p. 162, pl. 26, fig. 3.

Material. Anda 2 (1); Anda 3 (1); Anda 4 (1); Anda 6 (1); AndaDeVos (2); AndaClif 3 (1); Roxas (6).

Characterization. Seguenzia  with numerous low, thin more or less regularly spaced sigmoid axial lirae; H 1.9 mm, W 1.7 mm; DN 0.12 mm; two strong spiral ribs on shoulder, five on base; columella denticulate; adult shell with closed umbilicus.

Distribution. Apart from the studied material, Seguenzia keikoae Poppe, Tagaro & Dekker, 2006  has been reported from Bohol, off Pamilacan Island, Philippines, in a sample from between 196–216 m water depth.

Remarks. The attribution to S. keikoae  is uncertain despite the overall similar shell morphology because the adult specimens in our material have a closed umbilicus. Specimens shown by Poppe et al. (2006) have a slit-like umbilicus, but the latter specimens might be juveniles.