Wan-wan-kou dolomite at Wan-wan-kou valley in the Niuhsintai basin (Ordovician of South Korea)

Where: Hwanghae-namdo, South Korea (38.3° N, 125.4° E: paleocoordinates 2.0° S, 138.0° E)

• coordinate based on nearby landmark

When: Wan-wan-kou Formation, Cressagian (485.4 - 478.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, gray dolomite

• Dark gray dolomite

Size classes: macrofossils, mesofossils

Primary reference: T. Kobayashi. 1933. Faunal study of the Wanwanian (basal Ordovician) series with special notes on the Ribeiridae and the Ellesmereoceroids. Journal of the Faculty of Science Imperial University of Tokyo Section II Geology, Mineralogy, Geography, Seismology 3(7):249-328 [P. Wagner/K. Koverman/K. Koverman]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 39398: authorized by Pete Wagner, entered by Kimberly Koverman on 27.05.2004, edited by Pete Wagner and Björn Kröger

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Illaenuridae
"? Platycolpus granulatus" = Rasettia
"? Platycolpus granulatus" = Rasettia trilobite
 Ptychopariida - Plethopeltidae
 Ptychopariida - Kingstoniidae
Helcionelloida
 Helcionellida - Stenothecidae
"? Stenotheca manchurica" = Pseudoscenella manchurica
"? Stenotheca manchurica" = Pseudoscenella manchurica Kobayashi 1933
Paragastropoda
 Mimospirida - Clisospiridae
 Mimospirida - Onychochilidae
Matherella walcotti Kobayashi 1933
Scaevogyra ulrichi Kobayashi 1933
Scaevogyra naticaformis Kobayashi 1933
Rostroconchia
 Conocardiida - Eopteriidae
Wanwanella striata, Wanwanella wanwanensis, "Wanwanoidea trigonalis" = Wanwanella trigonalis, "Wanwanella tumida" = Wanwanella trigonalis, "Euchasmella multistriata" = Euchasma multistriata, Euchasma eopteriformis, Eopteria flora n. sp., Eopteria alta, "Eopteria asiatica" = Eopteria asiatica, "Eopteria obsolata" = Eopteria asiatica
Wanwanella striata Kobayashi 1933
Wanwanella wanwanensis Kobayashi 1933
"Wanwanoidea trigonalis" = Wanwanella trigonalis Kobayashi 1933
"Wanwanella tumida" = Wanwanella trigonalis Kobayashi 1933
"Euchasmella multistriata" = Euchasma multistriata Kobayashi 1933
Euchasma eopteriformis Kobayashi 1933
Eopteria flora n. sp. Kobayashi 1933
Eopteria alta Kobayashi 1933
"Eopteria asiatica" = Eopteria asiatica Kobayashi 1933
"Eopteria obsolata" = Eopteria asiatica Kobayashi 1933
 Ribeirioida - Technophoridae
Ribeiria bassleri Kobayashi 1933
Ribeiria manchurica Kobayashi 1933
 Ribeirioida - Ischyriniidae
 Ribeirioida - Ribeiriidae
Wanwania compressa Kobayashi 1933
Wanwania ambonychiformis Kobayashi 1933
 Ribeirioida -
Pseudoeuchasma typica Kobayashi 1933
Gastropoda
 Euomphalina - Macluritidae
"Helicotoma wanwanensis" = Macluritella wanwanensis
"Helicotoma wanwanensis" = Macluritella wanwanensis Kobayashi 1933 snail
Tergomya
 Archinacellida - Archinacellidae
Archinacella wanwanensis Kobayashi 1933
 Tryblidiida - Tryblidiidae
"? Propilina sp." = Proplina, Proplina ampla
"? Propilina sp." = Proplina Kobayashi 1933
Proplina ampla Kobayashi 1933
 Tryblidiida -
"Proplina bridgei" = Ellsworthoconus bridgei
"Proplina bridgei" = Ellsworthoconus bridgei Kobayashi 1933
 Scenelloidea - Scenellidae
Scenella sp. Billings 1872
Cephalopoda
 Ellesmerocerida - Plectronoceratidae
 Ellesmerocerida - Ellesmeroceratidae
 Endocerida - Cyrtendoceratidae
Ectenoceras ruedemanni Kobayashi 1933
Ectenoceras subcurvatum Ulrich et al. 1943
Ectenoceras curvatum Kobayashi 1931
Rhynchonellata
 Pentamerida - Huenellidae