Where: Shaanxi, China (35.2° N, 109.0° E: paleocoordinates 39.5° N, 87.3° E)
• coordinate estimated from map
• 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.
• group of beds-level stratigraphic resolution
Environment/lithology: lacustrine; lithified, gray, green mudstone
Size class: mesofossils
Preservation: mold/impression
Reposited in the NIGPAS
Primary reference: D. R. Zheng, A. Nel, B. Wang, E. A. Jarzembowski, S. C. Chang and H. C. Zhang. 2017. The first Triassic 'Protodonatan' (Zygophlebiidae) from China: stratigraphical implications. Geological Magazine 154:169-174 [M. Clapham/M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 183209: authorized by Matthew Clapham, entered by Matthew Clapham on 08.12.2016
Creative Commons license: CC BY (attribution)
Taxonomic list
Insecta | |
Chauliodites tongchuanensis n. sp.18
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Thaumatomerope sinensis n. sp.13
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Turbidapsyche sp.14, Turbidapsyche hongi n. sp.14, "Mesopsyche jinsuoguanensis n. sp." = Turbidapsyche jinsuoguanensis10, Turbidapsyche tongchuanensis14, Turbidapsyche orientalis n. sp.14, Turbidapsyche sparsanota n. sp.14, Prochoristella sp.23
"Mesopsyche jinsuoguanensis n. sp." = Turbidapsyche jinsuoguanensis10 Lian et al. 2021 scorpionfly NIGP 173731
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Mesochorista tongchuanensis n. sp.11 Lian et al. 2022 scorpionfly NIGP 177980; 177981, 177982, 200026
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Virgulaparachorista tongchuanensis n. gen. n. sp.12, Virgulaparachorista elegans n. sp.12, Sinoparachorista rara n. gen. n. sp.12
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Hejiafanga tongchuanensis n. gen. n. sp.15
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Triassopsyllidiida pectinata n. gen. n. sp.9
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Eocicadellium grimaldii n. gen. n. sp.4
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Triasalus chromatus n. gen. n. sp.1
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Tennentsia orientalis n. sp.2
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Archaeomaguviopsis magicus n. gen. n. sp.5
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Beaconiella tongchuanensis n. sp.19
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Scytinoptera tongchuanensis n. sp.22 Zhang et al. 2021 true bug NIGP 177616; In Hakim & Fu (2024 NIGP 205892, 893, 894, 206003, 206004, 206005/006
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Sinogranulus qishuiheensis n. gen. n. sp.16 Zhang et al. 2021 true bug NIGP 174710; NIGP 179635-179638 in Fu et al., 2022
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