Citation: Mr. Sanchezvillagra et al., RELATION OF INTERGROUP VARIATION IN ALLOGROOMING TO GROUP SOCIAL-STRUCTURE AND ECTOPARASITE LOADS IN RED HOWLERS (ALOUATTA-SENICULUS), International journal of primatology, 19(3), 1998, pp. 473-491
Citation: Mr. Sanchezvillagra et Rf. Kay, A SKULL OF PROARGYROLAGUS, THE OLDEST ARGYROLAGID (LATE OLIGOCENE SALLA BEDS, BOLIVIA), WITH BRIEF COMMENTS CONCERNING ITS PALEOBIOLOGY, Journal of vertebrate paleontology, 17(4), 1997, pp. 717-724
Citation: Mr. Sanchezvillagra et Rf. Kay, DO PHALANGERIFORMS (MARSUPIALIA, DIPROTODONTIA) HAVE A HYPOCONE, Australian journal of zoology, 44(5), 1996, pp. 461-467