YHC713, Ma'anshan, Xiangyun County (Triassic of China)

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
 Ceratitida - Juvavitidae
Gonionotites sp. Gemmellaro 1904 ceratite
 Ceratitida - Megaphyllitidae
Megaphyllites jarbas Münster 1841 ceratite
Gastropoda
 Murchisoniina - Phymatopleuridae
Worthenia cf. eremita Koken 1897 snail
 Seguenzioidea - Eucyclidae
Eucyclus multistriata n. sp. Pan 1977 snail