TWO APTIAN BIVALVE GENERA OF HETERODONTA FROM THE QIHULIN FORMATION IN EASTERN HEILONGJIANG PROVINCE
TWO APTIAN BIVALVE GENERA OF HETERODONTA FROM THE QIHULIN FORMATION IN EASTERN HEILONGJIANG PROVINCE
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发表时间：
2004
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通讯作者：
Jiang Bao
中科院分区：
文献类型：
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作者：
Jiang Bao
在龙兆沟群七虎林组中发现了早白垩世晚期至晚白垩世早期的多个双壳类属或种。其中，Vectianella凯西和Pseudaphrodina凯西的时代目前仅限于Aptian，这对七虎林组和龙兆沟群的定年具有重要意义。文中系统描述这两属化石，并简要探讨七虎林组的时代。
Several bivalve genera or species, ranging from the late Early Cretaceous to early Late Cretaceous, have been found in the Qihulin Formation of the Longzhaogou Group. Among them, the age of Vectianella Casey and Pseudaphrodina Casey is confined to Aptian as known so far, which has great significance to date the Qihulin Formation and Longzhaogou Group. In this paper, the two genera as well as their type species are described systematically, and the age of the Qihulin Formation is also briefly discussed and dated as mainly Aptian.