Browsing by Author "Li, Chuan-Kuei."
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Item A new Eocene rodent from the lower Arshanto Formation in the Nuhetingboerhe (Camp Margetts) area, Inner Mongolia ; American Museum novitates, no. 3569(New York, NY : American Museum of Natural History, 2007) Meng, Jin (Paleontologist); Li, Chuan-Kuei.; Ni, Xijun.; Wang, Yuan-qing.; Beard, K. Christopher.A new miniscule rodent represented by isolated cheek teeth is reported from the lower part of the late early Eocene Arshanto Formation, Nuhetingboerhe (Camp Margetts) area, Inner Mongolia. A new family, based on the new genus and species, is proposed. The new taxon resembles alagomyids but differs from early rodents in having a partial buccal cingulum, a distinct metaconule that merges posteriorly with the postcingulum, a transversely oriented trigon basin that widely separates the paracone and metacone, a prominent hypoconulid on lower molars, and in lacking the hypocone and protocristid. It differs from alagomyids in having a greater length/width ratio of upper cheek teeth, a neomorphic cusp termed as the preprotoconule, a preprotoconule crista that projects anteriorly, an anteroconid on dp4, an oblique cristid obliqua bearing a distinct mesoconid, and the hypoconid more posteriorly extended (or hypoconulid less posteriorly extended) on m3. The dental morphology of the new taxon is derivable from analagomyid dental pattern and is intermediate between alagomyids and rodents of modern aspect; it casts new light on the evolution of dentition of early rodents.Item The osteology of Matutinia (Simplicidentata, Mammalia) and its relationship to Rhombomylus. American Museum novitates ; no. 3371(New York, NY : American Museum of Natural History, 2002) Ting, Su-Yin.; Meng, Jin (Paleontologist); McKenna, Malcolm C.; Li, Chuan-Kuei.New dental, cranial, and postcranial specimens of the eurymylid Matutinia nitidulus from the early Eocene Lingcha Formation, Hengyang Basin, Hunan Province, China, are described. These materials are among the best of basal gliroid mammals from Asia. Matutinia is similar to Rhombomylus in general tooth and cranial morphologies, including an expanded hypocone shelf on the upper cheek teeth and a complex zygomatic arch. These features distinguish the two genera from other eurymylids such as Heomys and Eurymylus. Matutinia differs from Rhombomylus in having lower crowned and less lophate cheek teeth, fewer bony septa in the mastoid chamber, a lower promontorium, and a carotid foramen in the ear region. Based on the new material, we consider Matutinia a valid genus, not a junior synonym of Rhombomylus.Item The osteology of Rhombomylus (Mammalia, Glires) : implications for phylogeny and evolution of Glires. Bulletin of the AMNH ; no. 275(New York, NY : American Museum of Natural History, 2003) Meng, Jin (Paleontologist); Hu, Yaoming.; Li, Chuan-Kuei.Rhombomylus is a gliroid mammal endemic to several early Eocene localities of central and eastern Asia. It is best represented by a collection of numerous jaws and teeth, dozens of juvenile and adult skulls, and associated postcranial specimens from the early Eocene Yuhuangding Formation at the Dajian village, Junxian County, Hubei Province, China ... The core of the study consists of a taxonomic revision of the genus, a detailed description of the osteological morphology, extensive analyses on morphological characters, analyses on phylogeny, discussions on divergence time of the Glires, and analyses on functional morphology of mastication and locomotion. In comparing all known specimens assigned to the genus, we recognize only a single species, Rhombomylus turpanensis, for the genus and consider "R. laianensis" a junior synonym...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.