The concept of convergence, that is, how unrelated animals independently evolve similar
morphological traits, is a fundamental aspect of evolution. Hitherto, the Mesozoic …

New axial and appendicular material permits a detailed re-description of the postcranial
skeleton of the derived mid-Maastrichtian California mosasaur genus Plotosaurus. Centrum …

Shell, radular, opercular and external anatomical characters are surveyed in world Recent
deep-water Cassidae, leading to the recognition of three subfamilies: Cassinae …

The stratigraphic and paleogeographic distribution of the suspension-feeding
pachycormiform fish Bonnerichthys is reviewed. Fossils attributable to this genus are known …

Twenty gastropod taxa, belonging to thirteen genera and twelve families, are systematically
described from the Cenomanian-Turonian rocks of eastern Sinai. Most of the gastropods are …

Nyborg, T., Ossó, À. & Vega, FJ A new species of icriocarcinid crab (Crustacea, Portunoidea)
fom the uppermost Cretaceous of California, USA: palaeobiogeographic implications. In …

The Cretaceous record of the nuculid bivalve Acila (Truncacila) Grant & Gale, 1931, is
established for the first time in the region extending from the Queen Charlotte Islands, British …

A new early Danian gastropod assemblage contained in the Roca Formation of Río Negro
Province was analyzed. Eleven species are described and illustrated, the new genus …

Endemic genera of shallow-marine gastropods in the Cretaceous Northeast Pacific
Subprovince (NEP), extending from Alaska to northern Baja California Sur, Mexico, are …

Opines constitute a small subfamily of Mesozoic astartid bivalves that lived mostly in the
Tethys Sea region. They first appeared in western Europe during the Middle Triassic …