Top of upper member, 1.5 km east of Daihua (Devonian of China)

Where: Guizhou, China (25.7° N, 106.4° E: paleocoordinates 2.5° S, 104.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: upper Member (Daihua Formation), Late/Upper Famennian (364.7 - 360.7 Ma)

• The upper member is 35.4 m thick.

• member-level stratigraphic resolution

Environment/lithology: basinal (); lithified, gray limestone

• Gray dense limestone. "Quiet and deeper water...aphotic zone of rather deep water [because trilos are all blind]."

Size class: macrofossils

Primary reference: L. -W. Xiang. 1981. Some Late Devonian trilobites of China. Special Paper Geological Society of America 187:183-191 [J. Alroy/M. Sommers]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 3954: authorized by John Alroy, entered by Mike Sommers on 12.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• "...abundant ammonoids and numerous trilobites are concentrated at the top [of the member]."
 Phacopida - Phacopidae
Dianops guizhouensis trilobite
sp. nov.
 Proetida - Proetidae
Typhloproetus laevis trilobite
sp. nov.
Chaunoproetus daihuaensis trilobite
sp. nov.
 Clymeniida - Cymaclymeniidae
 Clymeniida - Cyrtoclymeniidae
 Clymeniida - Kosmoclymeniidae
 Clymeniida - Glatziellidae
 Clymeniida - Parawocklumeriidae
Parawocklumeria paradoxa Wedekind 1918 ammonite
Parawocklumeria distorta Tietze 1871 ammonite
 Clymeniida - Wocklumeriidae
Wocklumeria sphaeroides Richter 1848 ammonite
 Goniatitida - Prionoceratidae
 Goniatitida - Sporadoceratidae
Sporadoceras muensteri von Buch 1832 ammonite