Also known as Is-DF-27-55
Where: Japan (24.5° N, 124.3° E: paleocoordinates 28.9° N, 121.3° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Miyara Formation, Middle Eocene (47.8 - 37.7 Ma)
• Conglomerate bed in bedded volcanics. The Miyara Formation rests on the eerosional surface of an intensely folded Paleozoic formation, and is overlain by the Miocene Yaeyama coal-bearing group. Foraminifera support an upper Eocene age, while molluscs confirm a middle Miocene age
• bed-level stratigraphic resolution
Environment/lithology: coastal; pebbly, gray, green, argillaceous, sandy, calcareous conglomerate
Size class: macrofossils
Preservation: original aragonite, original calcite
Reposited in the USNM
Collection methods: quarrying,
• Collected by H.L. (1955). Reposited in the USGS of USNM collections
Primary reference: F.S. MacNeil. 1964. Eocene megafossils from Ishigaki-shima Ryukyu-retto. United States Geological Survey Professional Paper 399(B):1-14 [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 41585: authorized by Austin Hendy, entered by Austin Hendy on 17.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
? Bulla sp. Linnaeus 1758 snail | |
? Scaphander sp. Monfort 1810 snail | |
Turritella kotakai turret shell | |
Melanatria cf. kahoensis Nagao 1928 snail | |
Vicarya ibarumensis horn snail | |
? Mazzalina sp. Conrad 1860 snail | |
Terebra miyarensis auger snail | |
"Ancillopsis japonica" = Ancillaria (Ancillopsis)
"Ancillopsis japonica" = Ancillaria (Ancillopsis) olive snail | |
Caricella fosteri volute | |
Bivalvia | |
Ostrea sp. Linnaeus 1758 oyster | |
"Cardium ishigakensis" = Plagiocardium ishigakensis
"Cardium ishigakensis" = Plagiocardium ishigakensis MacNeil 1964 cockle | |
"Caryocorbula cf. subtumida" = Caestocorbula subtumida
"Caryocorbula cf. subtumida" = Caestocorbula subtumida Nagao 1928 clam | |
? Cardita sp. Bruguière 1792 clam
Cardita ishigakensis clam |