ammonites
Shanwang Bed sw2, Linchu district, Shantung province (Miocene of China)

Where: Shandong, China (36.5° N, 118.5° E: paleocoordinates 36.4° N, 116.3° E)

• coordinate based on nearby landmark

When: Middle Member (Shanwang Formation), Astaracian (16.0 - 11.6 Ma)

• MN6, Aragonian, Middle Miocene. There are six layers, which are grouped into 3 members. These members contain 3 fossil-bearing beds. SW2 is the richest level and is 20-30m thick.

Environment/lithology: lacustrine; sandstone and mudstone

• 'Gray yellow and grayish white gravelly sandstone, mud stone, shale and diatomite. The shore deposits consist of coarser clasolites which are gradually transferred into mudstone and shales towards the centre of the basin. Containing rich fossil diatoms, phosphate concretions and pyritic particles. (Yan et al. 1983)'

Size classes: macrofossils, mesofossils, microfossils

Collection methods: Flora indicates 'climate in the coastal region of China was then more humid and one of sub-tropical belt, while central parts of the continent were comparatively drier.'

Primary reference: C. C. Young. 1937. On a Miocene Mammalian Fauna from Shantung. Bulletin - Geological Society of China 17(2):209-244 [A. Turner/H. O'Regan/H. O'Regan] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 41810: authorized by Alan Turner, entered by Hannah O'Regan on 21.07.2004