Thelyssina

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 : 114

publication ID

https://doi.org/ 10.11646/zootaxa.3755.2.1

publication LSID

lsid:zoobank.org:pub:1872ECAB-3C5C-4D76-93A0-A8626F75B96E

DOI

https://doi.org/10.5281/zenodo.5671275

persistent identifier

https://treatment.plazi.org/id/490087B3-FFB0-6D2D-FF1F-FAC85B03F8BC

treatment provided by

Plazi

scientific name

Thelyssina
status

 

Thelyssina ? spec. 2

( Figures 23–25 View FIGURES 18 – 25 )

Material. AndaDeVos (10).

Characterization. Shell minute, H 0.8 mm, W 0.7 mm, trochiform, turreted; DN 0.11 mm; P/T boundary thin varix at 1.1 whorls; second varix at 1.6 whorls; T whorls shouldered, with axial lirae and minute pits; body whorl with rounded shoulder and low spiral rib; aperture subquadrate; very thin nacre observed at the damaged outer lip of one specimen; umbilicus narrow, with spiral rib inside.

Remarks. This seguenzioid skeneimorph species is also provisionally placed in Thelyssina , based on the presence of minute pits, a well defined angular shoulder, a basal spiral rib, an umbilical spiral rib and a small protoconch with anastomosing sculpture and a shape similar to the protoconch of the type species for the genus. However, this assignment is open to further scrutiny as Thelyssina ? spec. 2 is relatively tall and lacks dendritic sculpture.

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

SubClass

Vetigastropoda

Order

Archaeogastropoda

Family

Seguenziidae

SubFamily

Seguenziinae

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF