Apatosaurus "Apatosaurus" may have been more solitary than other Morrison Formation dinosaurs. Fossils of the genus have only been found in the upper levels of the formation. Those of "Apatosaurus ajax" are known exclusively from the upper Brushy Basin Member, about 152–151 mya. "A.louisae" fossils are rare, known only from one site in the upper Brushy Basin Member; they date to the late Kimmeridgian stage, about 151mya. Additional "Apatosaurus" remains are known from similarly aged or slightly younger rocks, but they have not been identified as any particular species, and thus may instead belong to "Brontosaurus". The Morrison Formation records a
Portrait of a Lady Known as Smeralda Brandini "* The same Lady, here surrounded by the masque of Spring, is evidently the subject of a portrait by Botticelli formerly in the Pourtales collection in Paris. This portrait is inscribed "Smeralda Bandinelli"". Rossetti's suggestion that the portrait depicted the model Botticelli used for his "Spring" now seems unlikely. Portrait of a Lady Known as Smeralda Brandini The Portrait of Smeralda Brandini is a tempera on panel painting by the Italian Renaissance artist Sandro Botticelli of about 1475, in the Victoria and Albert Museum, London (museum no. CAI.100). The identification of the sitter is based on the old, but probably