Biostratigraphy of the Upper Jurassic-Lower Cretaceous bivalves Buchia and Aucellina of eastern Heilongjiang, northeast China
Biostratigraphy of the Upper Jurassic-Lower Cretaceous bivalves Buchia and Aucellina of eastern Heilongjiang, northeast China
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DOI：
10.1017/s0016756800020586
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发表时间：
1993-07
影响因子：
2.3
通讯作者：
J. Sha;F. Fürsich
中科院分区：
文献类型：
--
作者：
J. Sha;F. Fürsich
摘要对中国东北地区双壳类Buchia和Aucellina的生物地层学意义进行了评价。Buchia在东安镇组的四个组合中非常丰富，跨越了侏罗纪-白垩纪界线：B。俄罗斯湾fischeriana（Middle Volgian），B.费舍里亚纳湾unschensis（Upper Volgian），B.沃尔根西斯湾参见苏波肯西斯湾参见奥肯西斯湾unschensis（Berriasian），和B. pacifica（Lower Valanginian）. Aucellina在两个中Barremian-Aptian组合中很常见：A.高加索-A aptiensis-A. jeletzkii，分布于龙照沟群上云山组下部和鸡西群城子河组下部;参见高加索-A参见aptiensis，产于云山组上部。这些组合可在全球范围内进行对比，对黑龙江东部早白垩世含煤岩系的定年具有重要意义。
Abstract The biostratigraphic significance of the bivalves Buchia and Aucellina in northeast China is assessed. Buchia is abundant in four assemblages of the Dong'anzhen Formation, spanning the Jurassic-Cretaceous boundary: B. russiensis-B. fischeriana (Middle Volgian), B. fischeriana-B. unschensis (Upper Volgian), B. volgensis-B. cf. subokensis-B. cf. okensis-B. unschensis (Berriasian), and B. pacifica (Lower Valanginian). Aucellina is common in two Middle Barremian-Aptian assemblages: A. caucasica-A. aptiensis-A. jeletzkii in the lower part of the Upper Yunshan Formation, Longzhaogou Group, and in the lower part of the Chengzihe Formation, Jixi Group; A. cf. caucasica-A. cf. aptiensis in the upper part of the Upper Yunshan Formation. These assemblages can be correlated on a global scale and are particularly significant in dating the Early Cretaceous coalbearing measures of eastern Heilongjiang.