Where: Guizhou, China (25.9° N, 105.5° E: paleocoordinates 20.3° N, 87.3° E)
• coordinate estimated from map
When: Zhuganpo Formation, Julian (235.0 - 232.0 Ma)
• Upper Zhuganpo Formation
Environment/lithology: nodular limestone
Size class: microfossils
Preservation: original phosphate
Collection methods: chemical, acetic
• Yichang Institute of Geology and Mineral Resources
Primary reference: L. Chen and G. Cuny. 2003. Discovery of the Middle-Late Triassic elasmobranch ichthyoliths from the Guanling area, Guizhou, SW China. Geological Bulletin of China 22(4):237-247 [M. Clapham/P. Vazquez]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 131034: authorized by Matthew Clapham, entered by Priscilla Vazquez on 18.07.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Chondrichthyes | |
Labrilancea glabrisubcuspis, Lobaticorona floriditurris, Parvicorona dacrysulca n. sp., Sacrisubcorona circabasis, Glabrisubcorona arduidevexa, Annulicorona pyramidalis
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