Iwaizaki, Japan (Permian to of Japan)

Also known as Reef 210

Where: Japan (38.9° N, 141.6° E: paleocoordinates 25.1° N, 115.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Iwaizaki Limestone Formation, Wordian to Wordian (268.8 - 259.9 Ma)

• formation-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified reef rocks

• coral reef complex formed on a faulted-bank in an active continental margin.
• Coral reef with substrate of bioclastic grainstone/packstone, core of framestone, bindstone and bafflestone, flank with lensoid bioclastic grainstone and rudstone

Size class: macrofossils

Primary reference: J.-w. Shen and T. Kawamura. 2001. Guadalupian algae-sponge reefs in siliciclastic environments – the reefs at Lengwu (South China) compared with the reef at Iwaizaki (Japan). Facies 45:137-156 [W. Kiessling/W. Kiessling/W. Kiessling]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 24126: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 01.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Incomplete
 Corallinales - Corallinophycidae
Parachaetetes sp. Deninger 1906
Crinoidea indet. Miller 1821 Sea lily
Bryozoa indet. Ehrenberg 1831
  - Nigriporellidae
Tubiphytes sp. Maslov 1956
 Stauriida - Waagenophyllidae
Waagenophyllum sp. Hayasaka 1924 horn coral
Parawentzelella sp. Fontaine 1961 horn coral
 Stauriida - Lithostrotionidae
Yatsengia sp. Huang 1932 horn coral
 Auloporida - Aulocystidae
"Sinopora sp." = Pseudoromingeria
"Sinopora sp." = Pseudoromingeria Yabe and Sugiyama 1941 tabulate coral
Porifera indet. Grant 1836
End reef builders
Cyanobacteria indet. Stanier 1973
  - Aphralysiaceae