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The lowermost Cretaceous of Western Siberia Bio-,lithostratigraphy, and palaeoenvironmental analysis
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辽宁义县金家沟义县组砖城子层的孢粉组合是以无肋双囊类花粉为主(占组合的70%左右),伴以少量Cicatricosisporites,Jugella,Ephedr......