Browsing by Author "Wang, Banyue."
Now showing 1 - 3 of 3
Results Per Page
Sort Options
Item The mid-Tertiary Ctenodactylidae (Rodentia, Mammalia) of eastern and central Asia. Bulletin of the AMNH ; no. 234([New York] : American Museum of Natural History, 1997) Wang, Banyue."The mid-Tertiary Ctenodactylidae, a profusely ramified rodent of eastern and central Asia, is thoroughly revised based on collections from the Hsanda Gol Formation made in the 1920s by the Third Asiatic Expedition of the American Museum of Natural History, as well as on relatively recently collected material from China. Leptotataromys, Muratkhanomys, and Roborovskia are all synonyms of Tataromys. The species formerly referred to Tataromys are divided into four genera: Tataromys, Yindirtemys, Bounomys, and Euryodontomys, new genus. Thus Tataromys includes only four species: T. plicidens, T. sigmodon, T. minor, and T. parvus, new species. Some species referred to Tataromys (T. grangeri, T. deflexus, T. suni, T. gobiensis, T. cf. T. plicidens, T. cf. T sigmodon of Bohlin (1946) and Zhai (1978), T. cf. T. grangeri, and some Tataromys species) are assigned to Yindirtemys. T. bohlini (partim) and T. ulantatalensis are allotted to Bounomys. T. cf. T. sigmodon and T. bohlini (partim) of Huang (1985) belong to a new genus, Euryodontomys. The mid-Tertiary Ctenodactylidae of Asia falls into four lineages, here considered as four subfamilies. Tataromyinae includes Tataromys, Yindirtemys, and Bounomys; Karakoromys is considered not only a valid genus, but also the representative of a subfamily, Karakoromyinae, which is composed of Karakoromys and Euryodontomys; Ctenodactylinae includes Sayimys, some other fossil genera from the Neogene and Pleistocene, and the living ctenodactylids. This subfamily is thought to be more closely related to the Karakoromyinae than to the Tataromyinae. The family Distylomyidae is here reduced to subfamily rank, Distylomyinae, the sister group of the Ctenodactylinae. Among the four subfamilies, the Tataromyinae, which abruptly flourished during the mid-Tertiary, became extinct by the end of the middle Miocene. On the other hand, the Ctenodactylinae survived and migrated into southern Asia, the Mediterranean area, and North Africa. Now they still survive and live only in North and East Africa. Evolution, radiation, migration, and extinction of the Ctenodactylidae are discussed. The main influential factors are interpreted to be climatic and topographic changes within the Palearctic Region from Eocene through Miocene times"--P. 3.Item On Tsaganomyidae (Rodentia, Mammalia) of Asia. American Museum novitates ; no. 3317(New York, NY : American Museum of Natural History, 2001) Wang, Banyue.; Central Asiatic Expeditions (1921-1930)The taxa within the family Tsaganomyidae are systematically redefined. Cyclomylus lohensis is a valid taxon. It is generically different from Tsaganomys in both tooth and skull morphology, including having lower crowned cheek teeth with closed roots, more prominent lophs and cusps on occlusal surfaces, a reduced dentine part, different microstructure of the incisor enamel, as well as other features. Two new species, C. intermedius and C. biforatus, are included in the genus Cyclomylus, mainly based on differences in crown height and root number. The strongly hypsodont tsaganomyids can be separated into two genera: Tsaganomys and a new genus, Coelodontomys, based on differences in cheek tooth morphology and relations of cheek teeth with incisors. As a result, Tsaganomyidae includes three genera and five species: Tsaganomys altaicus, Cyclomylus lohensis, C. intermedius, C. biforatus and Coelodontomys asiaticus. Tsaganomys is the sister group to Cyclomylus plus Coelodontomys. Cyclomylus lohensis, the most primitive species, made its first appearance in early early Oligocene; C. intermedius also then but slightly later. Cyclomylus biforatus and Coelodontomys asiaticus are restricted to late early Oligocene. Tsaganomys altaicus made its first occurrence in late early Oligocene and survived to early late Oligocene (or possibly earliest Miocene), by which time Cyclomylus and Coelodontomys had already become extinct. The Tsaganomyidae differ from Hystricognathi and Ctenodactyloidea in lacking the derived features of the two latter groups, such as hystricomorphous skull, large and deep pterygoid fossa, well-developed lower masseteric crest, fused malleus and incus, large and anteriorly expanded malleus head, proximal fusion of tibia and fibula, and large hypocone on upper cheek teeth. The autapomorphic features of the Tsaganomyidae are extremely enlarged temporal fossa, prominent sagittal and occipital crests, robust and strongly laterally convex zygomatic arch with well-developed jugal meeting premaxilla, high ascending ramus with high coronoid process, and triangularly convex surface of condyloid process. The angular process in the tsaganomyids is large and strongly flared, which is so different from the typical hystricognathous lower jaw that it is called tsaganomys-type hystricognathous mandible in this paper. The Tsaganomyidae presumably have unelongated masseter and pterygoid muscles but well-developed temporal muscle and steplike occlusal surface of the cheek tooth row. These features may be associated with crushing and transverse chewing. Obviously, the Tsaganomyidae evolved in a direction fairly distinct from both the Ctenodactyloidea and Hystricognathi.Item Vertebrate fossils and their context : contributions in honor of Richard H. Tedford. Bulletin of the AMNH ; no. 279(New York, NY : American Museum of Natural History, 2003) Flynn, Lawrence J. (Lawrence John), 1932-; Tedford, Richard H.; Novacek, Michael J.; Woodburne, Michael O.; Hunt, Robert M., Jr., 1941-; Gould, Gina C.; Gaffney, Eugene S.; Qiu, Zhanxiang.; Demere, Thomas A.; Berta, Annalisa.; Adam, Peter J.; Wang, Banyue.; Baskin, Jon A.; Van Valkenburgh, Blaire.; Sacco, Tyson.; Wang, Xiaoming, 1957-; Stevens, Margaret Skeels.; Stevens, James Bowie.; Lindsay, Everett H.; Whistler, David P.; Lander, E. Bruce.; Morgan, Gary S.; Lucas, Spencer G.; Ferrusquia-Villafranca, Ismael.; Webb, S. David (Sawney David), 1936-; Beatty, Brian Lee.; Poinar, George.; MacFadden, Bruce J.; Repenning, Charles A.; Turnbull, William D.; Lundelius, Ernest L.; Archer, Michael, 1945-; Pledge, Neville S.; Rich, Thomas H. V.; Darragh, Thomas A.; Rich, Pat Vickers.; Ye, Jie.; Meng, Jin (Paleontologist); Wu, Wenyu.; Qiu, Zhuding.; Li, Chuan-Kuei.; Winkler, Alisa J.; Downs, Will.; Holec, Peter.; Emry, Robert J.; McKenna, Malcolm C.; Lofgren, Donald L.; Tong, Haiyan.