Esta é uma listagem de novas espécies mamíferos que foram descobertos entre os anos de 2004 e 2007.

Atualmente, a terceira edição de “Mammals Species of the World” de Wilson e Reeder (2005), representa a listagem de espécies de mamíferos, mais atual e aceita pela comunidade científica. Entretanto, estudos taxonômicos mais aprofundados e a descoberta de novas espécies provocam mudanças nessa lista a cada ano. O aparecimento de uma nova espécie na nomenclatura pode fazer-se de três maneiras principais:

Descobrimento na natureza de uma espécie totalmente diferente; Nova interpretação de uma espécie conhecida, seja pela elevação de subespécie a espécie (como o caso do Neofelis diardi), como pelo estudo aprofundado em espécies crípticas, revelando que a espécie na verdade é composta por várias espécies próximas, contudo bem distintas (observado em várias espécies de morcegos). Descoberta de uma nova espécie pelo estudo mais exaustivo dos espécimes conservados em museus e coleções.

A principal ferramenta para esses novos rearranjos taxonômicos é o sequenciamento genético, que permite uma melhor compreensão do parentesco dos táxons. Entretanto outros métodos são também utilizados como a morfometria (principalmente nas espécies fósseis e sub-fósseis) e a bioacústica (no caso dos morcegos).

Marsupialia Monodelphis handleyi Solari, 2007SOLARI, S. (2007). New species of Monodelphis (Didelphomorphia: Didelphidae) from Peru, with notes on M. adusta (Thomas, 1897). Journal of Mammalogy 88 (2), 319-329. Philander deltae Lew, Pérez-Hernández e Ventura, 2006LEW, D., PÉREZ-HERNÁNEZ, R., VENTURA, J. (2006). Two new species of Philander (Didelphomorphia, Didelphidae) from northern South America. Journal of Mammalogy 87 (2), 224-237. Philander mondolfii Lew, Pérez-Hernández e Ventura, 2006 Myoictis leucura Woolley, 2005WOOLLEY, P. A. (2005). Revison of the three-striped dasyures, genus Myoictis (Marsupialia, Dasyuridae), of New Guinea, with description of a new species. Records of the Australian Museum 57, 321-340. Spilocuscus wilsoni Helgen e Flannery, 2004HELGEN, K. M., FLANNERY, T. F. (2004). Notes on the phalangerid marsupial genus Spilocuscus, with description of a new species from Papua. Journal of Mammology 85(5), 825-833. Microperoryctes aplini Helgen e Flannery, 2004HELGEN, K. M., FLANNERY, T. F. (2004). A new species of bandicoot, Microperoryctes aplini, from western New Guinea. Journal of Zoology 264, 117-124. Marmosops creightoni Voss, Tarkfa e Yensen, 2004VOSS, R. S., TARIFA, T., YENSEN, E. (2004). An Introduction to Marmosops (Marsupialia: Didelphidae), with the description of a New Species from Bolivia and Notes on the Taxonomy and Distribution of Other Bolivian Forms. American Museum Novitates 3466, 1-40. Monodelphis reigi Lew e Pérez-Hernández, 2004LEW, D., PÉREZ-HERNÁNDEZ, R. (2004). Una nueva especie del género Monodelphis (Didelphimorphia: Didelphidae) de la sierra de Lema, Venezuela. Memoria de la Fundación La Salle de Ciencias Naturales 159-160, 7-25. Monodelphis ronaldi Solari, 2004SOLARI, S. (2004). A new species of Monodelphis (Didelphimorphia: Didelphidae) from southeastern Peru. Mammalian Biology (Zeitschrift für Säugetierkunde) 69(3), 145-152.

Afrosoricida Microgale jobihely Goodman, Raxworthy, Maminirina e Olson, 2006GOODMAN, S. M., RAXWORTHY, C. J., MAMINIRINA, C. P., OLSON, L. E. (2006). A new species of shrew tenrec (Microgale jobihely) from northern Madagascar. Journal of Zoology 270, 384-398. Microgale jenkinsae Goodman e Soarimalala, 2004GOODMAN, S. M., SAORIMALALA, V. (2004). A new species of Microgale (Lipotyphla: Tenrecidae: Oryzorictinae) from the Forêt des Mikea of southwestern Madagascar. Proceedings of the Biological Society of Washington 117(3), 251-265.

Soricomorpha Mogera kanoana Kawada et al., 2007KAWADA, S., SHINOHARA, A., KOBAYASHI, S., HARADA, M., ODA, S., LIN, L. (2007). Revision of the genus Mogera (Mammalia: Lipotyphla: Talpidae) from Taiwan. Systematics and Biodiversity 5 (2), 223-240. Sorex rohweri Rausch, Feagin e Rausch, 2007RAUSCH, R. L., FEAGIN, J. E., RAUSCH, V. R. (2007). Sorex rohweri sp. nov. (Mammalia, Soricidae) from northwest North America. Mammalian Biology 72 (2), 93-105. Congosorex phillipsorum Stanley, Rogers e Hutterer, 2005STANLEY, W. T., ROGERS, M. A., HUTTERER, R. (2005). A new species of Congosorex from the Eastern Arc Mountains, Tanzania, with significant biogeographical implications. Journal of Zoology 265, 269-280. Crocidura kegoensis Lunde, Musser e Ziegler, 2005LUNDE, D. P., MUSSER, G. G. , ZIEGLER, T. (2005). Description of a new species of Crocidura (Soricomorpha: Soricidae, Crocidurinae) from Ke Go Nature Reserve, Vietnam. Mammal Study 29: 27-36. Crocidura zaitzevi Jenkins et al., 2007JENKINS, P. D., ABRAMOV, A. V., ROZHNOV, V. V., MAKAROVA, O. V. (2007). Description of two new species of white-toothed shrews belonging to the genus Crocidura (Soricomorpha: Soricidae) from Ngoc Linh Mountain, Vietnam. Zootaxa 1589, 57-68. Crocidura sokolovi Jenkins et al., 2007 Crocidura hikmiya Meegaskumbura et al., 2007MEEGASKUMBURA, S., MEEGASKUMBURA, M., PETHIYAGODA, R., MANAMENDRA-ARACHCHI, K., SCHNEIDER, C. J. (2007). Crocidura hikmiya, a new shrew (Mammalia: Soricomorpha: Soricidae) from Sri Lanka. Zootaxa 1665, 19-30.

Primates Aotus jorgehernandezi Defler e Bueno, 2007DEFLER, T. R.; BUENO, M. L. (2007). Aotus diversity and the species problem. Primate Conservation 22. Avahi betsileo Andriantompohavana et al., 2007ANDRIANTOMPOHAVANA, R., LEI, R., ZAONARIVELO, J. R., ENGBERG, S. E., NALANIRINA, G., McGUIRE, S. M., SHORE, G. D. ANDRIANASOLO, J., HERRINGTON, K., BRENNEMAN, R. A., LOUIS, E. A. (2007). Molecular phylogeny and taxonomic revision of the woolly lemurs, genus Avahi (Primates: Lemuriformes). Special Publications of the Museum of Texas Tech University 51, 1-59. Lepilemur manasamody Craul et al., 2007CRAUL, M., ZIMMERMANN, E., RASOLHARIJAONA, S., RANDRIANAMBININA, B., RADESPIEL, U. (2007). Unexpected species diversity of Malagasy primates (Lepilemur spp.) in the same biogeographical zone: a morphological and molecular approach with the description of two new species. BMC Evolutionary Biology 7:83, 15 pp. Lepilemur otto Craul et al., 2007 Lophocebus ugandae (Matschie, 1912) Groves, 2007GROVES, C. P. (2007). The endemic Uganda Mangabey, Lophocebus ugandae, and other members of the albigena-group (Lophocebus). Primate Conservation 22. Microcebus bongolavensis Oliveri et al., 2007OLIVIERI, G., ZIMMERMANN, E., RANDRIANAMBININA, B., RASOLOHARIJAONA, B., RAKOTONDRAVONY, D., GUSCHANSKI, K., RADESPIEL, U. (2007). The ever-increasing diversity in mouse lemurs: Three new species in north and northwestern Madagascar. Molecular Phylogeny and Evolution 43, 309-327. Microcebus danfossi Oliveri et al., 2007 Microcebus lokobensis Oliveri et al., 2007 Cebus querozi Mendes Pontes, Malta e Asfora, 2006MENDES PONTES, A. R., MALTA, A., ASFORA, P. H. (2006). A new species of capuchin monkey, genus Cebus Erxleben (Cebidae, Primates): found at the very brink of extinction in the Pernambuco Endemism Centre. Zootaxa 1200, 1-12. Tarsius lariang Merker e Groves, 2006MERKER, S., GROVES, C. P. (2006). Tarsius lariang: a new primate species from western central Sulawesi. International Journal of Primatology 27 (2), 465-485. Avahi ramanantsoavani Zaramody et al., 2006ZARAMODY, A., FAUSSER, J. L., ROOS, C., ZINNER, D., ANDRIAHOLINIRINA, N., RABARIVOLA, C., NORSCIA, I., TATTERSALL, I., RUMPLER, Y. (2006). Molecular phylogeny and taxonomic revision of the eastern woolly lemurs (Avahi laniger). Primate Report 74, 9-24. Avahi peyrierasi Zaramody et al., 2006 Avahi meridionalis Zaramody et al, 2006 Microcebus jollyae Louis et al., 2006LOUIS, E. E., COLES, M. S., ANDRIANTOMPOHAVANA R., SOMMER, J. A., ENGBERG, S. E., ZAONARIVELO, J. R., MAYOR, M. I., BRENNEMAN, R. A. (2006). Revision of the Mouse Lemurs (Microcebus) of eastern Madagascar. International Journal of Primatology 27 (2), 347-389. Microcebus mittermeieri Louis et al., 2006 Microcebus simmonsi Louis et al., 2006 Microcebus mamiratra Andriantompohavana et al., 2006ANDRIANTOMPOHAVANA, R., ZAONARIVELO, J. R., ENGBERG, S. E., RANDRIAMAMPIONONA, R., McGUIRE, S. M., SHORE, G. D., RAKOTONOMENJANAHARY, R., BRENNEMAN, R. A., LOUIS, E. E. (2006). Mouse lemurs of northwestern Madagascar with a description of a new species at Lokobe Special Reserve. Occasional Papers of Museum of Texas Tech University 259, 1-24. Lepilemur aeeclis Andriaholinirina et al., 2006ANDRIAHOLINIRINA, N., FAUSSER, J.-L., ROOS, C., ZINNER, D., THALMANN, U., RABARIVOLA, C., RAVOARIMANANA, I., GANZHORN, J. U., MEIER, B., HILGARTNER, R., WALTER, L., ZARAMODY, A., LANGER, C., HAHN, T., ZIMMERMANN, E., RADESPIEL, U., CRAUL, M., TOMIUK, J., TATTERSALL, I., RUMPLER, Y. (2006). Molecular phylogeny and taxonomic revision of the sportive lemurs (Lepilemur, Primates). BMC Evolutionary Biology 6 (17), 1-13. thumb|right|Lepilemur aeeclis Lepilemur randrianasoli Andriaholinirina et al., 2006 Lepilemur sahamalazensis Andriaholinirina et al., 2006 Lepilemur ahmansoni Louis et al., 2006LOUIS, E. E., ENGBERG, S. E., LEI, R., GENG, H., SOMMER, J. A., RANDRIAMAMPIONONA, R., RANDRIAMANANA, J. C., ZAONARIVELO, J. R., ANDRIANTOMPOHAVANA, R., RANDRIA, G., PROSPER, RAMAROMILANTO, B., RAKOTOARISOA, G., ROONEY, A. & BRENNEMAN, R.A. (2006). Molecular and morphological analyses of the sportive lemurs (family Megaladapidae: genus Lepilemur) reveals 11 previously unrecognized species. Special Publications, Museum of Texas Tech University 49, 1-47. Lepilemur betsileo Louis et al., 2006 Lepilemur fleuretae Louis et al., 2006 Lepilemur grewcocki Louis et al., 2006 Lepilemur hubbardi Louis et al., 2006 Lepilemur jamesi Louis et al., 2006 Lepilemur milanoii Louis et al., 2006 Lepilemur petteri Louis et al., 2006 Lepilemur seali Louis et al., 2006 Lepilemur tymerlachsoni Louis et al., 2006 Lepilemur wrighti Louis et al., 2006 Macaca munzala Sinha, Datta, Madhusudan & Mishra, 2005SINHA, A., DATTA, A., MANDHUSUDAN, M., MISHRA, C. (2005). Macaca munzala: a new species from western Arunachal Pradesh, northeastern India. International Journal of Primatology 26 (4), 977-989. Rungwecebus kipunji (Jones et al., 2005) JONES, T., EHARDT, C., BUTYNSKI, T. M., DAVENPORT, T. R. B., MPUNGA, N. E., MACHAGA, S, J., De LUCA, D. W. (2005). The highland mangabey Lophocebus kipunji: anew species of african monkey. Science 308 (5725), 1161-1164. Davenport et al., 2006DAVENPORT, T. R. B., STANLEY, W. T., SARGIS, E. J., De LUCA, D, W., MPUNGA, N. E., MACHAGA, S. J., OLSON, L. E. (2006). A new genus of african monkey, Rungwecebus: morphology, ecology, and molecular phylogenetics. Science 312 (5778), 1378-1381. Callicebus aureipalatii Wallace et al., 2005WALLACE, R. B., GÓMEZ, H., FELTON, A., FELTON, A. (2005). On a new species of titi monkey, genus Callicebus Thomas (Primatres, Pitheciidae), from western Bolivia with preliminary notes on distribution and abundance. Primate Conservation 20, 29-39. Avahi cleesei Thalmann & Geissmann, 2005THALMANN, U., GEISSMANN T. (2005). New species of woolly lemur Avahi (Primates: Lemuriformes) in Bemaraha (Central Western Madagascar). American Journal of Primatology 67, 371-376. Microcebus lehilahytsara Roos & Kappeler, 2005KAPPELER, P. M., RASOLOARISON, R. M., RAZAFIMANANTSOA, L., WALTER L., ROOS, C. (2005). Morphology, behaviour and molecular evolution of giant mouse lemurs (Mirza spp.) Gray, 1870, with description of a new species. Primate Report 71. Mirza zaza Kappeler & Roos, 2005

Rodentia Lophuromys kilonzoi Verheyen et al., 2007VERHEYEN, W. N.; HULSELMANS, J. L. J.; DIERCKX, T.; MULUNGU, L.; LEIRS, H.; CORTI, M.; VERHEYEN, E. (2007). The characterization of the Kilimanjaro Lophuromys aquilus True 1892 population and the description of five new Lophuromys species (Rodentia, Muridae). Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen 77: 23-75.