Where: Yunnan, China (25.5° N, 100.6° E: paleocoordinates 16.9° N, 79.1° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Luojiadashan Formation (Xiangyun Group), Tuvalian (232.0 - 221.5 Ma)
• Gonionotites could potentially be Lacian, but other ammonoids from the formation are more typically Tuvalian.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified lithology not reported
Size class: macrofossils
Preservation: mold/impression
Reposited in the NIGPAS
Primary reference: X. L. Liang. 1977. Late Triassic ammonites from Yunnan. Mesozoic Fossils from Yunnan 2:71-82 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 165395: authorized by Matthew Clapham, entered by Matthew Clapham on 18.01.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Gonionotites sp. Gemmellaro 1904 ceratite | |
Megaphyllites jarbas Münster 1841 ceratite | |
Gastropoda | |
Worthenia cf. eremita Koken 1897 snail | |
Eucyclus multistriata n. sp.
Eucyclus multistriata n. sp. Pan 1977 snail |