Bed 4, Mongkelu locality, Wutubulake Fm., Junggar Basin, Xinjiang, China (Silurian of China)

Where: Xinjiang, China (46.8° N, 66.6° E: paleocoordinates 11.1° S, 67.2° E)

When: bouceki/bandeletovi zone zone, Wutubulake Formation (Hoboksar Group), Pridoli (423.0 - 419.2 Ma)

• originally considered to be Devonian (Gedinnian) but reported as top of Pridoli in Cai, Dou & Edwards, 1993.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, yellow, calcareous sandstone and poorly lithified, pebbly sandstone

• On Kazakhstan plate but near the suture between the Siberian and Kazakhstan plates. Depositional environment could have been shallow shelf (Rong & Chen, 1992) or low energy, dysaerobic trough with distal turbidites. Diversity of faunas and facies may indicate offshore transport of sediments during storm disturbance of shelf environments.
• Yellow-brown clacareous and tuffaceous fine-grained sandstone intercalated with sandstone containing pebbles and lenticular bioclastic limestone.

Size class: macrofossils

Preservation: adpression, permineralized, coalified, original carbon, original sporopollenin, replaced with limonite

Collection methods: quarrying, chemical, mechanical

Primary reference: Y. W. Dou and Z. H. Sun. 1983. Devonian Plants. Palaeontological Atlas of Xinjiang, Vol. II. Late Palaeozoic Section. Geological Publishing House, Beijing [P. Gensel/M. Kotyk]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 10931: authorized by Pat Gensel, entered by Michele Kotyk on 05.07.2001, edited by Pat Gensel

Creative Commons license: CC BY (attribution)

Taxonomic list

• Invertebrate fossils are merely mentioned in Cai, Dou & Edwards' 1993 paper and not described.
unclassified
  -
Trilobita
 Proetida - Proetidae
? Warburgella aboronius1 trilobite
trilobite
Strophomenata
 Strophomenida - Leptostrophiidae
Rhynchonellata
 Spiriferida - Delthyrididae
Howellella sp.1 Kozlowski 1946
brachiopod
 Atrypida -
 Rhynchonellida - Machaerariidae
Ferganella sp.1
brachiopod
Bivalvia
 Mytilida - Mytilidae
Mytilus cf. beyrichi1 mussel
bivalve
 Modiomorphida - Modiomorphidae
Graptolithina
 Graptoloida -
Pseudomonoclimacis bandelotovi1 graptoloid
graptolite
 Bireclinata - Monograptidae
Monograptus anerosus1 graptoloid
graptolite
? Monograptus ? pridoliensis1 graptoloid
graptolite
Monograptus mironovi1 graptoloid
graptolite
 Dendroidea - Dendrograptidae
Dictyonema sp.1 Hall 1851 graptolite
Anthozoa
 Favositida - Favositidae
Favosites sp.1 Lamarck 1816 tabulate coral
coral
 Stauriida - Laccophyllidae
? Syringaxon sp.1 Lindström 1882 horn coral
coral
Parka
  -
Parka indet. Flemming 1831
Parka indet.2 Flemming 1831
Zosterophyllum
  -
Zosterophyllum sp. Penhallow 1892
H-branching
Zosterophyllopsida
 Cooksoniales -
"Cooksonella sphaerica" = Eocooksonia1
"Cooksonella sphaerica" = Eocooksonia1
Rhizopodea
  -
Retusotriletes
  -
 Ichnofossils -
Algites indet.2 Hantzschel 1975