2-473: Melchiorites is a desmoceratid ammonite genus included in the subfamily Puzosiinae . Member species are characterized by an essentially evolute shell in which the early whorls are smooth, with sinuous radial or oblique constrictions but in which later whorls have feeble intermediate ribs on the outer part of the sides and venter. Melchioites is known from Lower Cretaceous of Europe, north Africa, and California. The type species, Melchiorites melchioris
4-600: Is from the Upper Albian of France. Desmoceratidae Desmoceratidae is a family belonging to the ammonite superfamily Desmoceratoidea . They are an extinct group of ammonoids , shelled cephalopods related to squid , belemnites , octopuses , and cuttlefish , and more distantly to the nautiloids , that lived between the Lower Cretaceous (Upper Valanginian ) and Upper Cretaceous (Upper Maastrichtian ). This Ammonitina -related article
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