With the objective of testing the monophyly of the Calyptraeoidea and of searching for its
ground plan, a detailed morpho-logical analysis was conducted for the following species: a) …

As part of a larger project on the phylogeny of the Caenogastropoda superfamilies, a
detailed morphological study of 19 non-marine species is provided, of the following taxa: a) …

A detailed morphological study was performed in the following species of Crepidula: 1) C.
margarita new species from Venezuela; 2) C. plana Say, 1822; 3) C. atrasolea Collin, 2000; …

A new species of Crepidula is described. It was collected together with Pagurus edwardsii
Dana and Pagurus perlatus H. Milne Edwards, inhabiting the inside of empty shells of …

Phylogenetic analyses of partial sequences spanning approximately 450 nucleotides near
the 5'end of the 18s rDNA strongly support the monophyly of Apogastropoda and its …

ABSTRACT A short review of the history of investigation of cocculiniform gastropods is
followed by a comparison of the organ systems of the group. Whereas each family is …

The anatomy of 12 pseudococculinid species, representing the two subfamilies and 10 (of
11 known) genera, is described in detail. Three new genera are erected, Yaquinabyssia …

Midgut morphology of gastropod molluscs has been underutilized as a resource of
characters for phylogenetic analysis. The exclusion of these features reflects the inference …

The anatomy of seven cocculinid species, representing four genera, is described. Two new
genera are erected, Paracocculina and Coccocrater, and a comparative account of all …

Calyptraeid gastropods are well know for the taxonomic difficulties caused by their simple,
phenotypically variable shells. In this paper I demonstrate that what was previously …