MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
A new species of Pseudokellya Pelseneer, 1903
ZELAYA, D. G.; ITUARTE, C.
THE NAUTILUS (PHILADELPHIA)
Lugar: PHILADELPHIA; Año: 2008 vol. 123
A new species of Pseudokellya, Pseudokellya franki from South Shetland Islands is described. P. franki is characterized by its subcircular shell outline, the periostracum forming low lamellate commarginal folds, radial sculpture absent, and by the presence of a single posterior siphonal opening, a fact that is in contrast with the reported for the type species Pseudokellya cardiformis. The presence of a complete follicle surrounding each developing oocyte, persisting throughout vitellogenesis, a condition not currently known for other bivalve, is confirmed as a generic diagnostic character. The generic redefinition, based on shell morphology and anatomical features described for Pseudokellya franki, is given.