Also known as IGPS loco no.-Ch-12

Where: Chiba, Japan (35.2° N, 139.9° E: paleocoordinates 35.6° N, 139.5° E)

• coordinate stated in text

When: Kurotaki Formation, Gelasian (2.6 - 1.8 Ma)

• Kurotaki formation (Tomiya tuffaceous sandstone), originally Lower Pliocene. Kurotaki Formation overlies the Kurotaki unconformity and is the basal unit of the Kazusa Group. Based on biostratigraphy, magnetostratigraphy, and tephrochronology, the lower part of the Kazusa Group on the Boso Peninsula is Gelasian in age (Tamura & Yamazaki, 2010).

Environment/lithology: marine; sandstone

Size class: macrofossils

Primary reference: S. Nisiyama. 1966. The echinoid fauna from Japan and adjacent regions, Part I. Palaeontological Society of Japan Special Papers 11:1-277 [M. Uhen/B. Shipps/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 204372: authorized by Mark Uhen, entered by Mark Uhen on 06.09.2019

Creative Commons license: CC BY (attribution)