RESUMO
Comparisons of a moderately worn pm4 in its jaw, and an isolated dpm4 of the Oligocene-Miocene Homunculus (the second tooth originally described as that of a marsupial), indicate cebid identity with affinities nearest Alouatta. Diagnoses of dpm4, pm4 and m1 of all known platyrrhines and comparisons with teeth of strepsirhines and tarsioids reveal that platyrrhines cannot be derived from any known non-platyrrine stock. Speculations on platyrrhine ancestry are reviewed.
Assuntos
Dente Pré-Molar/anatomia & histologia , Cebidae/anatomia & histologia , Paleodontologia , Dente/anatomia & histologia , Alouatta/anatomia & histologia , Animais , Argentina , Feminino , Fósseis , História Antiga , Masculino , Mandíbula , Dente Molar/anatomia & histologia , Filogenia , Especificidade da EspécieRESUMO
Recognized species of sakis, South American monkeys of genus Pithecia (Cebidae), are P. hirsuta Spix, P. monachus E. Geoffroy, P. albicans Gray, P. pithecia Linnaeus. Evolutionary stages in sexual dichromatism in sakis and other primates are noted.
Assuntos
Cor de Cabelo , Haplorrinos/classificação , Animais , Feminino , Haplorrinos/anatomia & histologia , Masculino , Fatores Sexuais , América do SulRESUMO
The taxonomic appraisal of Brazilian marmosets, genus Callithrix, by Coimbra-Filho and Mittermeier is critically examined. It is shown that their assertions are not supported by the evidence.