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  • 1
    Publication Date: 2006-02-25
    Description: A docodontan mammaliaform from the Middle Jurassic of China possesses swimming and burrowing skeletal adaptations and some dental features for aquatic feeding. It is the most primitive taxon in the mammalian lineage known to have fur and has a broad, flattened, partly scaly tail analogous to that of modern beavers. We infer that docodontans were semiaquatic, convergent to the modern platypus and many Cenozoic placentals. This fossil demonstrates that some mammaliaforms, or proximal relatives to modern mammals, developed diverse locomotory and feeding adaptations and were ecomorphologically different from the majority of generalized small terrestrial Mesozoic mammalian insectivores.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ji, Qiang -- Luo, Zhe-Xi -- Yuan, Chong-Xi -- Tabrum, Alan R -- New York, N.Y. -- Science. 2006 Feb 24;311(5764):1123-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth Science, Nanjing University, Nanjing 200017, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16497926" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Size ; Bone and Bones/anatomy & histology ; China ; Dentition ; Ear Ossicles/anatomy & histology ; Environment ; Feeding Behavior ; *Fossils ; Hair/anatomy & histology ; *Mammals/anatomy & histology/classification/physiology ; Mandible/anatomy & histology ; Paleodontology ; Paleontology ; Phylogeny ; Ribs/anatomy & histology ; Skull/anatomy & histology ; Spine/anatomy & histology ; Swimming ; Tail/anatomy & histology ; Water
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2006-06-17
    Description: Three-dimensional specimens of the volant fossil bird Gansus yumenensis from the Early Cretaceous Xiagou Formation of northwestern China demonstrate that this taxon possesses advanced anatomical features previously known only in Late Cretaceous and Cenozoic ornithuran birds. Phylogenetic analysis recovers Gansus within the Ornithurae, making it the oldest known member of the clade. The Xiagou Formation preserves the oldest known ornithuromorph-dominated avian assemblage. The anatomy of Gansus, like that of other non-neornithean (nonmodern) ornithuran birds, indicates specialization for an amphibious life-style, supporting the hypothesis that modern birds originated in aquatic or littoral niches.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉You, Hai-Lu -- Lamanna, Matthew C -- Harris, Jerald D -- Chiappe, Luis M -- O'connor, Jingmai -- Ji, Shu-An -- Lu, Jun-Chang -- Yuan, Chong-Xi -- Li, Da-Qing -- Zhang, Xing -- Lacovara, Kenneth J -- Dodson, Peter -- Ji, Qiang -- New York, N.Y. -- Science. 2006 Jun 16;312(5780):1640-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Geology, Chinese Academy of Geological Sciences, 26 Baiwanzhuang Road, Beijing 100037, People's Republic of China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16778053" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Birds/*anatomy & histology/*classification/physiology ; Bone and Bones/*anatomy & histology ; China ; Environment ; Feathers/anatomy & histology ; Femur/anatomy & histology ; Flight, Animal ; *Fossils ; Hindlimb/anatomy & histology ; Humerus/anatomy & histology ; Locomotion ; Phylogeny ; Spine/anatomy & histology ; Toes/anatomy & histology ; Water ; Wings, Animal/anatomy & histology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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