Where: Hokkaido, Japan (44.1° N, 142.0° E: paleocoordinates 52.6° N, 134.9° E)
• coordinate stated in text
• small collection-level geographic resolution
When: Biostrina nipponica ammonoid zone, Middle Yezo Group, Late/Upper Cenomanian to Late/Upper Cenomanian (99.6 - 89.3 Ma)
Environment/lithology: offshore; lithified, massive siltstone
Size class: macrofossils
Primary reference: T. Sato and G. W. Storrs. 2000. An early polycotylid plesiosaur (Reptilia: Sauropterygia) from the Cretaceous of Hokkaido, Japan. Journal of Paleontology 74(5):907-914 [M. Carrano/H. Street]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 102078: authorized by Matthew Carrano, entered by Hallie Street on 07.01.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Polycotylidae indet. Williston 1908 plesiosaur UMUT MV 19965 (2 cervicals, 1 dorsal, 2 sacrals, 4 caudals, 3 indet. vertebrae partial pectoral girdle, ribs, right forelimb, fragmentary pectoral girdle, stomach contents)
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