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61. The upper structure layer is composed of the Cretaceous to the Quaternary, which shows a large slope dipping northwestward.

62. The main types of clastic sandstones are feldspathic litharenite and lithic arkose in the Cretaceous of the Songliao basin.

63. This dinosaurian group arose early in the late Late Jurassic, and flourished in the Early Cretaceous.

64. Paleomagnetic results from the both sides of Honghe fault zone have shown that the Yangzi block has been united with the Qiangtang terrane since Cretaceous.

65. Mineral, palaeontology, middle devonian, permian to early jurassic, and cretaceous.

66. Permo Carboniferous coal series have relative good coal gas potential, dark mudstones in Lower Jurassic, lower part of Middle Jurassic and Lower Cretaceous are the best source rocks.

67. The facies types of the Lower Cretaceous are mainly delta, lake and turbidity.

68. As we know, there had been in "greenhouse" climate in Cretaceous which was interrupted by " icehouse " climate in some epochs of both Early and Late Cretaceous.

69. The mentioned above dating results imply that Mesozoic magmatism in the NCB chiefly happened in early Cretaceous.

70. In this paper, we discuss the oxygen content of the Late Cretaceous sea water by means of microfossil proxies .

71. The earliest known bird, Archaeopteryx, lived during the Jurassic, the period before the Cretaceous.

72. The meandering river deposit backslider from the studied area largely in the deposition period of Lianmuxing Formation in the early Cretaceous. The meandering stream was widely developed.

73. Fula Transform Zone in the middle structural zone is formed during the first rifting phase in Early Cretaceous.

74. From the view of stratigraphy, they all belong to the Cretaceous period.

75. This story, though, raises the question of why there is but a single ejecta layer of iridium and shocked quartz in late Cretaceous rocks around the world.

76. So the researchers resorted to some techniques out of a Cretaceous CSI.

77. Analcite mineral was found from rock specimen of cretaceous system in the Ordos Basin via using micro-analysis.

78. Ankylosaurus lived 70 to 65 million years ago. That time was called the late Cretaceous period.

79. Only in the tropics were numerous late Cretaceous groups extinguished during peaks in their evolution.

80. The NWW - extending Cretaceous amphibolic diabase dikes are developed in Xiazhuang uranium ore field , Northern Guangdong province.

81. No creditable macrofossil record of the Fagaceae exists in the Cretaceous equivocal and require further study.

82. The prototype of Zhoukou Cretaceous basin should be of foredeep basin.

83. The Fangshan granodiorite pluton of Lower Cretaceous occupies the middle of core.

84. This ostracod fauna has also been reported from the Upper Cretaceous strata in Mongolia.

85. Thirdly, it formed fracture combination in Permian, Trias, Jurassic and Cretaceous strata effected by the compression-strike-slip structure superposed and rebuilt process.

86. The deposit is hosted in the Mesozoic Upper Cretaceous volcanic rocks, associated with dacite, andesite, andesitic porphyrite and rhyolite.

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87. But under the control of NE-SW tensile stress field of Early Cretaceous, in the eastern part of "Ergun Block" sag belt was formed and the basement tectonics is NE-NNE direction.

88. Liupanshan Cretaceous basin is a mono - basin of Liupanshan inland overlapping basin.

89. The unconformity between the Eocene and the Lower Cretaceous is common in Jiuquan basin.

90. The research result shows:Badaohao Formation - coal-bearing strata - in Badaohao Coal Basin is of early Cretaceous Period and can be correlated to Shahai Formation in Fuxin Basin.