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As many hybodont sharks are known solely from their teeth, this investigation approaches the phylogeny of the group with an emphasis on tooth morphology and dentitional patterns. The preliminary resul...
The affinities of the selachian genus Ptychodus is discussed and Hemiptychodus is here re-introduced as a subgenus characterized by unusual tooth ornamentation pattern.An overview ofAsian hybodont gen...
The Bornova Flysch Zone consists of large blocks of Mesozoic limestone, basalt, serpentinite and radiolarian chert in a highly sheared clastic matrix of latest Cretaceous to Paleocene age. We describe...
专著信息 书名 Mesozoic Birds of China—with an introduction of its contemporaries, geology and implications 语种 中文 撰写或编译 撰写 作者 Zhou Z,Zhang F,Hou L. 第一作者单位 出版社 Indiana University Press 出版地 Bloomington, USA 出版...
March 14, 2007,An international team of American and Chinese paleontologists has discovered a new species of mammal that lived 125 million years ago during the Mesozoic Era, in what is now the Hebei P...
Abstract: Slaty strata and their weathering products comprise a large portion of the geologic formations of the western foothills in the Sierra Nevada, Mid-Northern California. The weathering products...
Abstract: Gradual change from 60% montmorillonite/40% illite randomly interstratified clay minerals at 3500 ft depth to 20% montmorillonite/80% illite at 10,200 ft can be observed in a complete sectio...

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