Gucheng (upper He-Shang-Gou Formation) (Triassic to of China)

Also known as Gucheng (He-Shan-Kou Formation); Ordos Basin

Where: Shaanxi, China (39.5° N, 111.0° E: paleocoordinates 39.8° N, 89.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Heshanggou Formation, Olenekian to Olenekian (251.2 - 242.0 Ma)

• Original formation name spelling >>He-Shang-Gou<< is replaced by the much more common spelling >>Heshanggou<<. (TL)

•"Lower assemblage" of the Heshanggou Formation of the Ordos Basin, the age of which is based entirely upon biostratigraphy (see Nesbitt et al. 2011, Earth Env. Sci. Trans. Roy. Soc. Edinburgh). Vertebrate biostratigraphy (presence of the Anisian taxon Kannemeyeria in the overlying "upper assemblage" of the Heshanggou and presence of the Early Triassic Proterosuchus in the "lower assemblage") as well as plant and microspore data suggests an Olenekian-earliest Anisian age (Nesbitt et al. 2011, Earth Env. Sci. Trans. Roy. Soc. Edinburgh)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithified, red sandstone

• "hard, red sandstone"

Size class: macrofossils

Reposited in the IVPP

Collection methods: surface (float), mechanical,

• Li (1983) says that Gucheng locality yielded 16 specimens but lists a total of 17 (see catalogue numbers in taxonomic list). (TL)

Primary reference: J. L. Li. 1983. Tooth replacement in a new genus of procolophonid from the Early Triassic of China. Palaeontology 26(3):567-583 [J. Alroy/R. Whatley/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 27158: authorized by John Alroy, entered by Robin Whatley on 20.11.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Parareptilia - Procolophonidae
Eumetabolodon bathycephalus Li 1983 parareptile
IVPP V 6065 to 6069, 6166(1&2), 6167, 6168(1&2), 6169 to 6175