Himedo Park Shark Bed (Cretaceous of Japan)

Where: Japan (32.4° N, 130.4° E: paleocoordinates 41.5° N, 121.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Hinoshima Formation (Hinenoura Group), Santonian (86.3 - 83.6 Ma)

• lower part of the Hinoshima Formation

Environment/lithology: coastal; sandstone

• shallow water (shoreface) depositional environment; " ...distributary channel and sand bar developed on a delta at the head of a bay. The coarse sand bed containing many

•shark teeth is considered to have formed the sand body at the bay mouth."

• a medium–coarse sand bed (80 cm thick), stratigraphically above PBDB collection 219954 and below PBDB collection 219956

Size classes: macrofossils, mesofossils

Primary reference: N. Kitamura. 2019. Features and paleoecological significance of the shark fauna from the Upper Cretaceous Hinoshima Formation, Himenoura Group, Southwest Japan . Paleontological Research 23(2):110-130 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 219956: authorized by Patricia Holroyd, entered by Patricia Holroyd on 27.04.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Chondrichthyes
 Hybodontiformes - Ptychodontidae
Ptychodus mammillaris
Ptychodus mammillaris Agassiz 1835 elasmobranch
 Hexanchiformes - Hexanchidae
Notorynchus sp.
Notorynchus sp. Ayers 1855 cow shark
 Lamniformes - Otodontidae
Cretalamna appendiculata
Cretalamna appendiculata Agassiz 1835 mackerel shark