The early cretaceous orthopteran Parahagla sibirica Sharov, 1968 (Prophalangopsidae) from the Jiuquan Basin of China and its palaeogeographic significance

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• 作者：He Wang^a ; ^b ; ^{wanghe0701@163.com" class="auth_mail" title="E-mail the corresponding author} ; Daran Zheng^a ; ^b ; Xudong Hou^c ; Xiaojie Lei^a ; ^b ; Qingqing Zhang^a ; ^b ; Bo Wang^a ; ^d ; Yan Fang^a ; Edmund A. Jarzembowski^a ; ^e ; Haichun Zhang^a ; ^{hczhang@nigpas.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Parahagla sibirica Sharov ; Orthoptera ; Chijinbao formation ; China ; Migration ; Aptian
• 刊名：Cretaceous Research
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：57
• 期：Complete
• 页码：40-45
• 全文大小：2381 K

文摘

The orthopteran Parahagla sibirica Sharov, 1968 is reported based on a male forewing for the first time from the Lower Cretaceous Chijinbao Formation of the Jiuquan Basin, Gansu Province, Northwest China. The diagnosis of the species is revised based on the new specimen. Its palaeogeographic and stratigraphic distributions are discussed, based on which two possible migration paths of the species are indicated as follows: (1) This species initially appeared in northern Hebei and western Liaoning, China at latest in the earliest Aptian, and further migrated northwestwards to Transbaikalia and westwards to Gansu Province soon later (early-middle Aptian). (2) Or alternatively, it originally occurred in Transbaikalia earlier than the Aptian and further migrated southwards to northern China during the Aptian.