Where: Iwate, Japan (39.8° N, 142.0° E: paleocoordinates 53.0° N, 141.0° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Hiraiga Sandstone Formation (Miyako Group), Late/Upper Aptian (122.5 - 113.0 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: perireef or subreef; lithified, calcareous sandstone
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 91325: authorized by Wolfgang Kiessling, entered by Uta Merkel on 15.09.2009, edited by Wolfgang Kiessling
Creative Commons license: CC BY (attribution)
Taxonomic list
Anthozoa | |
Latusastrea sp., "Miyakosmilia cf. ishidai" = Heterocoenia
Latusastrea sp. d'Orbigny 1850 stony coral
"Miyakosmilia cf. ishidai" = Heterocoenia stony coral | |
Polyphylloseris mammillata n. sp.
Polyphylloseris mammillata n. sp. Eguchi 1951 stony coral | |
? Actinacis miyakoensis n. sp.
? Actinacis miyakoensis n. sp. Eguchi 1951 stony coral | |
"Placocoenia orbitoides" = Montastrea orbitoides
"Placocoenia orbitoides" = Montastrea orbitoides Eguchi 1951 stony coral | |
| |
? Isastrea sp. Milne-Edwards and Haime 1851 stony coral | |
Eugyra cf. cotteaui Fromentel 1857 stony coral | |
"Placocoenia japonica n. sp." = Silingastraea japonica
"Placocoenia japonica n. sp." = Silingastraea japonica Eguchi 1951 stony coral | |
"Heliopora japonica" = Pseudopolytremacis japonica
"Heliopora japonica" = Pseudopolytremacis japonica Eguchi 1948 |