Contributions in honor of Guy G. Musser.

450 p. : ill. (some col.), maps ; 26 cm. "Issued December 15, 2009." Includes bibliographical references.Contents: They sort out like nuts and bolts : a scientific biography of Guy G. Musser / Michael D. Carleton -- Taxonomy, distribution, and natural history of the genus Heteromys ‪(‬Rodentia: Heteromyidae‪)‬ in central and eastern Venezuela, with the description of a new species from the Cordillera de la Costa / Robert P. Anderson and Eliécer E. Gutiérrez -- Review of the Oryzomys couesi complex ‪(‬Rodentia: Cricetidae: Sigmodontinae‪)‬ in western Mexico / Michael D. Carleton and Joaquin Arroyo-Cabrales -- The antiquity of Rhizomys and independent acquisition of fossorial traits in subterranean muroids / Lawrence J. Flynn -- A new species of Reithrodontomys, subgenus Aporodon ‪(‬Cricetidae: Neotominae‪)‬, from the highlands of Costa Rica, with comments on Costa Rican and Panamanian Reithrodontomys / Alfred L. Gardner and Michael D. Carleton -- Phylogenetic relationships of harpyionycterine megabats ‪(‬Chiroptera: Pteropodidae‪)‬ / Norberto P. Giannini, Francisca Cunha Almeida, and Nancy B. Simmons -- A new genus and species of small ‪"‬tree-mouse‪"‬ ‪(‬Rodentia, Muridae‪)‬ related to the Philippine giant cloud rats / Lawrence R. Heaney, Danilo S. Balete, Eric A. Rickart, M. Josefa Veluz, and Sharon A. Jansa -- Biodiversity and biogeography of the moss-mice of New Guinea : a taxonomic revision of Pseudohydromys ‪(‬Muridae: Murinae‪)‬ / Kristofer M. Helgen and Lauren E. Helgen -- Systematic revision of sub-Saharan African dormice ‪(‬Rodentia: Gliridae‪)‬. Part 2, Description of a new species of Graphiurus from the central Congo Basin, including morphological and ecological niche comparisons with G. crassicaudatus and G. lorraineus / Mary Ellen Holden and Rebecca S. Levine -- Descriptions of new species of Crocidura ‪(‬Soricomorpha: Soricidae‪)‬ from mainland Southeast Asia, with synopses of previously described species and remarks on biogeography / Paulina D. Jenkins, Darrin P. Lunde, and Clive B. Moncrieff -- The six opossums of Félix de Azara : identification, taxonomic history, neotype designations, and nomenclatural recommendations / Robert S. Voss, Philip Myers, François Catzeflis, Ana Paula Carmignotto, and Josefina Barreiro -- Skull and dentition of Willeumys korthi, nov. gen. et sp., a cricetid rodent from the Oligocene ‪(‬Orellan‪)‬ of Wyoming / John H. Wahlert

San Juan Cretaceous mammals

30 p. : ill.. map ; 26 cm.Includes bibliographical references (p. 28-30)."Small mammals from Upper Cretaceous rocks exposed in Hunter Wash and higher in Ojo Alamo and Barrel Spring Arroyos, and near Burnham Trading Post in the San Juan Basin are described and compared to Late Cretaceous mammals from Wyoming, Montana, and Alberta. Superposed assemblages from the Hunter Wash-Ojo Alamo area cluster around two levels that are separated by about 200 m of strata and at least 1 million years of time. Small samples from the younger localities are comparable to Lance and Hell Creek mammals of the latest Cretaceous (late Maastrichtian). The older localities yield richer assemblages that display affinity with faunas from the Judith River, Oldman, and Milk River formations, generally thought to be Campanian in age. Present paleomagnetic reversal correlations suggest a middle to late Maastrichtian age for the entire terrestrial sequence in the San Juan Basin. This correlation agrees with the approximate ages of Lance and Hell Creek faunas, but is about 6 million years younger than ages presently estimated for known Judith River and Oldman assemblages. Accepting the hypothesized paleomagnetic age for the San Juan Basin terrestrial rocks, this suggests that the Judithian land mammal 'age' defined by Lillegraven and McKenna (1986) persisted through most of the Maastrichtian and was replaced by Lancian-like assemblages after 68 million years ago. Further, the fact that the older Hunter Wash assemblage includes elements occurring in both the Milk River and the Judith River formations may suggest that differences between Milk River and Judith River are mainly ecological. Alternatively, Milk River and Judith River elements may have survived anomalously late in the San Juan Basin as a consequence of faunal provincialism. This view suggests that the San Juan Basin was part of a biogeographic province separate from northern faunas. As a third alternative, if the paleomagnetic correlation for the San Juan Basin is rejected, the age of the Hunter Wash assemblage can be estimated on biochronological arguments as intermediate between the Milk River and Judith River faunas; i.e., near the Campanian/Maastrichtian boundary. Of course, further paleontological and chronological work throughout North America will help to clarify this situation by strengthening the biostratigraphic basis for the definition of mammalian biochrons"--P. 2

Baluchimyinae, a new ctenodactyloid rodent subfamily from the Miocene of Baluchistan. American Museum novitates ; no. 2841

58 p. : ill., maps ; 26 cm.Includes bibliographical references (p. 53-58)."Rodents from early Miocene deposits near Dera Bugti, Baluchistan, Pakistan, represent an endemic radiation of ctenodactyloids in the Indian subcontinent. The Bugti small mammal fauna contrasts sharply with other known middle Cenozoic faunas, but most taxa can be referred to the Chapattimyidae, a family known previously from Eocene deposits of the Indian subcontinent. Four new genera, Baluchimys, Lindsaya, Lophibaluchia, and Hodsahibia are placed in the new subfamily Baluchimyinae. The Baluchimyinae and the new genus Fallomus are placed in the redefined Chapattimyidae. An additional, rare element in the Bugti fauna, Downsimys margolisi new genus and species, is named without referral to family, but affinities may lie with chapattimyids or cylindrodontids. A single large tooth resembles specimens from Qujing, Yunnan, China, that are referred to the yuomyid Dianomys. The Bugti fauna must be considered in formulating hypotheses of relationships of higher rodent taxa and in biogeographic reconstructions. The fauna indicates that the Chapattimyidae are a diverse South Asian clade that is closely related to the northern Yuomyidae and Ctenodactylidae. All three families are classified in the superfamily Ctenodactyloidea and are derived in their hystricomorphy with respect to the early Asiatic rodent Cocomys. Some evidence supports relationship of Baluchimyinae with African Thryonomyoidea. Evolution of Chapattimyidae and other ctenodactyloids is characterized by vicariant events in which different groups radiated to the south and to the north of the Tethys/Himalayas. If Chapattimyidae are close to Thryonomyoidea, then this establishes a record of Eocene rodents in the northern hemisphere of the Old World that could lie near the origin of African hystricognaths on the one hand and South American Caviomorpha on the other. This scenario then implies monophyly of most African, Asian, and South American hystricomorphous rodents. However, unless baluchimyines or late Paleogene Asiatic relatives prove to have hystricognathous jaws, this interpretation requires that hystricognathy arose independently in Oligocene African and South American groups"--P. 2

Late Tertiary mammals from the Mongolian People's Republic. American Museum novitates ; no. 2872

16 p. : ill., map ; 26 cm.Includes bibliographical references (p. 14-16)."Age assessment of late Tertiary rocks north of the Altai Mountains, Mongolian People's Republic, is refined by renewed study of a small collection of mammalian fossils made by the Central Asiatic Expedition in 1925. A dentary fragment with P[subscript 3] assignable to Trischizolagus most closely resembles an early Pliocene member of the genus from Afghanistan. Trischizolagus is also known from late Miocene and Pliocene deposits of Spain, France, Romania, and Greece. An equid, formerly considered as Equus and an indicator of Pleistocene age, is a hipparionine referable to 'Hipparion' houfenense. Other elements of the fauna are 'Oioceros' sp., a proboscidean possibly representing Sinomastodon, and a rhinocerotid resembling Chinese Chilotherium. All are comparable to late Tertiary taxa known from elsewhere and suggest an age for the sediments near the Miocene-Pliocene epoch limit"--P. [1]