Koikorobe, Tanohata-mura (Cretaceous of Japan)

Where: Iwate, Japan (39.9° N, 141.9° E: paleocoordinates 53.1° N, 140.9° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Moshi Sandstone Formation (Miyako Group), Late/Upper Aptian (122.5 - 112.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: perireef or subreef; lithified, calcareous sandstone

• shallow open-marine setting with abundant fossils (corals, rudists, molluscs, calcareous algae, foraminifers); small coral-rudist buildups may have existed (reef 1216)

Size class: macrofossils

Primary reference: M. Eguchi. 1951. Mesozoic hexacorals from Japan. The Science Reports of the Tohoku University, Geology 24:1-96 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 91282: authorized by Wolfgang Kiessling, entered by Uta Merkel on 14.09.2009, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)

Taxonomic list

 Helioporacea - Helioporidae
"Heliopora japonica" = Pseudopolytremacis japonica
"Heliopora japonica" = Pseudopolytremacis japonica Eguchi 1948
 Scleractinia - Amphiastreidae
"Amphiastrea hiraigaensis" = Pleurostylina hiraigaensis
"Amphiastrea hiraigaensis" = Pleurostylina hiraigaensis Eguchi 1951 stony coral
 Scleractinia - Haplaraeidae
Meandraraea miyakoensis n. sp. Eguchi 1951 stony coral
Meandraraea hiraigaensis n. sp. Eguchi 1951 stony coral
 Scleractinia - Dermosmiliidae
Dermosmilia trichotoma n. sp. Eguchi 1951 stony coral
 Scleractinia - Agariciidae
? Maeandrella haipensis n. sp. Eguchi 1951 stony coral
 Scleractinia - Montastraeidae
"Placocoenia orbitoides n. sp." = Montastrea orbitoides
"Placocoenia orbitoides n. sp." = Montastrea orbitoides Eguchi 1951 stony coral
 Scleractinia - Cyathophoridae
"Miyakopora miyakoensis" = Cryptocoenia miyakoensis
"Miyakopora miyakoensis" = Cryptocoenia miyakoensis Eguchi 1936 stony coral
 Scleractinia - Microsolenidae
? Dimorpharaea japonica n. sp. Eguchi 1951 stony coral
 Scleractinia - Eugyridae
Eugyra cf. cotteaui Fromentel 1857 stony coral
 Scleractinia - Placocoeniidae
Placocoenia tanohataensis n. sp. Eguchi 1951 stony coral
 Scleractinia - Heterocoeniidae
Latusastrea sp. d'Orbigny 1850 stony coral
Heterocoenia tetraseptata n. sp. Eguchi 1951 stony coral
"Miyakosmilia densa" = Heterocoenia densa Eguchi 1936 stony coral
 Scleractinia - Pachyphylliidae
"Montastrea nipponica" = Columnocoenia nipponica
"Montastrea nipponica" = Columnocoenia nipponica Eguchi 1951 stony coral