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1 September 2008 New Middle Jurassic Mayflies (Insecta: Ephemeroptera: Siphlonuridae) from Inner Mongolia, China
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Abstract

Two new mayfly species, Cheirolgisca ningchengensis gen. and sp. nov. and Olgisca angusticubitis sp. nov. from the Middle Jurassic Jiulongshan Formation of Ningcheng County, Inner Mongolia, NE China are described herein, both attributed to the extant family, Siphlonuridae. The Mesozoic mayfly imagoes have been rarely reported, thus the new material with well-preserved gonostyles provides valuable evolutionary evidence on this family.

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Qi-Bin Lin and Di-Ying Huang "New Middle Jurassic Mayflies (Insecta: Ephemeroptera: Siphlonuridae) from Inner Mongolia, China," Annales Zoologici 58(3), 521-527, (1 September 2008). https://doi.org/10.3161/000345408X364346
Received: 22 December 2007; Accepted: 1 July 2008; Published: 1 September 2008
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