Dongkala outcrop, Fenggang County, Guizhou, China (Silurian to of China)

Where: Guizhou, China (28.0° N, 108.0° E: paleocoordinates 6.7° N, 127.0° E)

• coordinate estimated from map

When: equivalent to the avitus-dilutus zone or the base of chulus var. chulus-chulus var. nanus zone of Richardson & McGregor zone, Xiushan Formation, Aeronian to Aeronian (440.8 - 427.4 Ma)

• This formation is overlain by Permian rock. The plant bed is 2.2 m below the unconformity.

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, green, yellow siltstone

• fresh, solid and obviously unweathered, yellowish green siltstone.

Size classes: macrofossils, microfossils

Preservation: adpression, permineralized, coalified, original carbon, original sporopollenin

Primary reference: B. Y. Geng. 1986. Anatomy and morphology of Pinnatiramosus, a new plant from the Middle Silurian (Wenlockian) of China. Acta Botanica Sinica 28:667-670 [P. Gensel/M. Kotyk/P. Gensel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 10942: authorized by Pat Gensel, entered by Michele Kotyk on 06.07.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• List taken primarily from Cai et al. 1996
unclassified
  -
Punctatisporites
  -
Punctatisporites spp. PotoniƩ and Kremp 1954
Retusotriletes
  -
Retusotriletes spp. Naumova 1953
Protozoa
  -
Bivalvia
 Pectinida - Pterinopectinidae
Rhynchonellata
 Atrypida - Atrypinidae
 Athyridida - Nucleospiridae
Apiculiretusispora
  -