Intraspecific variation in offspring size is of fundamental ecological and evolutionary
importance. The level of provisioning an organism receives from its mother can have far …

The mode of development in marine invertebrates is believed to have consequences for
dispersal, gene flow, geographic range, and speciation and extinction rates. The factors …

Although calyptraeid gastropods are not well understood taxonomically, in part because
their simple plastic shells are the primary taxonomic character, they provide an ideal system …

ABSTRACT A new review of available information, published and unpublished, on the
biology and paleobiology of turhtelline gastropods expands our knowledge of this important …

Organismal taxonomy is often based on a single or a small number of morphological
characters. When they are morphologically simple or known to be plastic, we may not have …

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 …

The circumstances that favor or disfavor habitat specialization in species are not well
understood, despite a vast literature on particular cases. The taxonomic, phylogenetic and …

Intracapsular development is common in marine gastropods. In many species, embryos
develop alongside nurse eggs, which provide nutrition during ontogeny. The common whelk …

Abstract A new Pliocene (3.4 Ma) mollusk fauna from Mejillones Peninsula, northern Chile is
described and compared with the Pliocene La Cueva fauna of little constrained age from …

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) …