Where: Yunnan, China (24.9° N, 102.8° E: paleocoordinates 34.3° N, 159.6° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Palaeolenus trilobite zone, Wulongqing Formation, Botomian (516.0 - 513.0 Ma)
• Stage 4. Canglangpuan.
•Megapalaeolenus Zone (= upper Canglangpuan, Stage 4 of the South Chinese regional biostratigraphical zonation)
• member-level stratigraphic resolution
Environment/lithology: shallow subtidal; lithified mudstone and siltstone
• The Wulongqing Formation is about 60 m thick and overlies the fine-grained sandstones of the Hongjingshao Formation (Fig. 2). The contact to the underlying unfossiliferous Hongjingshao Formation is characterized by a several-decimetre-thick basal conglomerate of the lowermost part of the Wulongqing Formation, probably indicating a regional transgression event in SW China.
• Monotonous sequence of mudstones with siltstone intercalations, the lower part of which is mainly composed of mudstone with few thin-bedded silt-sandstone layers. The micaceous siltstone and fine-grained sandstone beds become more abundant towards the top of the Wulongqing Formation. The mudstone beds display erosive bases and an upward fining. Multiple-graded silt-mud couplets are frequent within the mudstone beds. Sole marks, trace fossils and microbial mat structures are common at the base of the siltstone beds.
Size classes: macrofossils, mesofossils
Primary reference: B. Weber, S. Hu, M. Steiner and F. Zhao. 2012. A diverse ichnofauna from the Cambrian Stage 4 Wulongqing Formation near Kunming (Yunnan Province, South China). Bulletin of Geosciences 87(1):71-92 [W. Kiessling/M. Krause]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 139440: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 12.02.2013
Creative Commons license: CC BY (attribution)
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| Ichnofossils -
, ? Thalassinoides sp.
, Treptichnus pedum
, Plagiogmus sp.
, Teichichnus sp.
, Gordia sp.
, Planolites sp.
, Psammichnites sp.
, Palaeophycus sp.
, Merostomichnites sp.
, Phycodes sp.