On some Vetigastropoda (Mollusca, Gastropoda) from the Plio-Pleistocene of the Philippines with descriptions of three new species
Author
Helwerda, Renate Ariane
Author
Wesselingh, Frank Pieter
Author
Williams, Suzanne T.
text
Zootaxa
2014
3755
2
101
135
journal article
46615
10.11646/zootaxa.3755.2.1
e02bbd39-b7ee-4ddf-8109-3407dd6d2ea2
1175-5326
250959
1872ECAB-3C5C-4D76-93A0-A8626F75B96E
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. 2008a
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); AndaClif3 (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.