Browsing by Author "Webb, S. David (Sawney David), 1936-"
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Item Miocene Leptomerycidae (Artiodactyla, Ruminantia) and their relationships. American Museum novitates ; no. 2596(New York, N.Y. : American Museum of Natural History, 1976) Taylor, Beryl E.; Webb, S. David (Sawney David), 1936-"Leptomerycidae, previously thought to have survived only from the Arikareean, are here recognized from the medial Miocene (late Hemingfordian into Valentinian) deposits of New Mexico, Texas, and Nebraska. These late-surviving Leptomerycidae belong to the species Pseudoparablastomeryx scotti and P. francesita, previously assigned to the Blastomerycinae. Likewise, Pronodens silberlingi from Arikareean deposits in Montana and possibly South Dakota is transferred to the Leptomerycidae from incertae sedis in the Cervidae. The relationships between these late Leptomerycidae and contemporaneous Blastomerycinae are shown to be remote despite several parallel features in common. Separation of the family Leptomerycidae from the family Hypertragulidae is advocated"--P. [1].Item The phylogeny of hornless ruminants and a description of the cranium of Archaeomeryx. Bulletin of the AMNH ; v. 167, article 3(New York : American Museum of Natural History, 1980) Webb, S. David (Sawney David), 1936-; Taylor, Beryl E."We analyze the interrelationships of the several groups of hornless ruminants and show which of them lie nearest the higher ruminants. The phylogenetic progression within Ruminantia proceeds from Hypertragulidae through Tragulidae to Leptomerycidae to Gelocidae to Moschidae and thence to the horned ruminants. Archaeomeryx of the late Eocene is recognized as a primitive member of the Leptomerycidae; the living Tragulidae actually represent a more primitive ruminant stock. We introduce the name Moschina for the Gelocidae and the Moschidae and the term Eupecora for the higher ruminant groups bearing horns, antlers, and ossicones. We also propose Neoselenodontia, above the subordinal level, to include both the Ruminantia and their sister group, the Tylopoda. The stratigraphic records of the five lower ruminant families appear relatively complete with the exception of the Tragulidae, which are poorly known prior to the Miocene. The exclusively North American distribution of the family Hypertragulidae and many of the Tylopoda suggests that the Ruminantia may have originated in North America. The Tragulidae, exclusively Old World and predominantly subtropical, presumably originated by colonization and isolation in the Old World. Thereafter ruminant evolution centered in the Old World, but representatives of every major group reached North America"--P. 121.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.