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Dashanpu Dinosaur Quarry, Xiashaximiao (Jurassic to of China)

Where: Sichuan, China (29.4° N, 104.9° E: paleocoordinates 29.6° N, 109.7° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Xiashaximiao Formation, Bajocian to Bajocian (171.6 - 161.2 Ma)

• "from approximately the middle of the lower member of the Xiashaximiao Formation" (= Lower Shaximiao); Lower Shaximiao is suggested to be either Bajocian or Bathonian-Callovian in age

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; tabular, micaceous sandstone and blue mudstone

• "a lake-shore shallow-bank deposit under low energy conditions"
• "micro-grained feldspatholithic sandstone, which is rich in mica fragments, matrix interstitial. Wave-ripple cross bedding, micro-wavy bedding and medium- to large-scale tabular cross bedding are clearly seen."

Size classes: macrofossils, mesofossils

Collected in 1972, 1974, 19771984

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: X. He, D. Yan, and C. Su. 1983. A new pterosaur from the Middle Jurassic of Dashanpu, Zigong, Sichuan. Journal of the Chengdu College of Geology 1:27-33 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 24883: authorized by Matthew Carrano, entered by Matthew Carrano on 22.08.2002, edited by Philip Mannion, Roger Benson and Richard Butler

Creative Commons license: CC BY (attribution)