Where: Shaanxi, China (35.2° N, 109.0° E: paleocoordinates 39.5° N, 87.3° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Yanchang Formation, Longobardian (242.0 - 235.0 Ma)
• Fossils come from Upper part of Lower Member of Tongchuan. Ash beds from within the insect-bearing units dated at 238.0 and 237.4 Ma, indicating latest Ladinian age (Zheng et al., 2018). Most authors have indicated that the Tongchuan Formation should be abolished as it has no distinctive lithostratigraphic criteria by which it can be separated from the Yanchang Formation.
Environment/lithology: lacustrine; lithified, gray, green mudstone
Size class: mesofossils
Preservation: mold/impression
Collection methods: Repository: Beijing Museum of Natural History
Primary reference: Y. C. Hong, S. Chen, and S. T. Liu. 2002. Middle Triassic new fossils of Protorthophlebia Tillyard (Insecta: Mecoptera) from Tongchuan region, Shaanxi province, China. Entomologia Sinica 9(2):51-57 [M. Clapham/J. Karr/J. Karr]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 117138: authorized by Matthew Clapham, entered by Jered Karr on 15.09.2011, edited by Matthew Clapham
Creative Commons license: CC BY (attribution)
Taxonomic list
Insecta | |
Sinothauma ladinica n. gen. n. sp.10
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Cathayiblatta longata n. gen. n. sp.12
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Shaanxichorista hejiafangensis n. gen. n. sp.2, Qingochorista conjunctiva n. gen. n. sp.1, "Choristites martinsoni n. gen. n. sp." = Hongchoristites martinsoni2
"Choristites martinsoni n. gen. n. sp." = Hongchoristites martinsoni2 Hong 2005 scorpionfly 82TH6-1/T149
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"Itaphlebia tongchuanensis n. sp." = Mesopsyche tongchuanensis3, Allochorista erdosensis n. gen. n. sp.3, Ladinochorista lata n. gen. n. sp.3, Longifurcula hejiafangensis n. gen. n. sp.3, Forcinerva tongchuanensis n. gen. n. sp.7, Mesopanorpodes latus n. sp.13, Mesopanorpodes shaanxiensis n. sp.8
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Protorthophlebia triassica n. sp., Protorthophlebia ladinica n. sp., "Protorthophlebia (Psomophlebia) curta n. sp." = Protorthophlebia curta6
"Protorthophlebia (Psomophlebia) curta n. sp." = Protorthophlebia curta6 Hong 2009 scorpionfly 82TH1-1/T122
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Dracaphis angustata n. gen. n. sp.11
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Shaanxiglosselytron longata n. gen. n. sp.4, Sinoglosselytron qishuiheensis n. gen. n. sp.4, Ladinoglosselytron martynovae n. gen. n. sp.4
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