Chifeng City (Cretaceous of China)

Where: Nei Monggol, China (42.3° N, 118.9° E: paleocoordinates 45.3° N, 118.7° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Jiufotang Formation (Jehol Group), Aptian (125.0 - 113.0 Ma)

• "This new material was found in the Jiufutang Formation, which forms the lower part of the Early Cretaceous formations in the Chifeng area... The presence of Sinornis santensis in the Jiufutang Formation, indicates a Valanginian age for this formation (Sereno & Rao, 1992)." (Lü et al. 1999)

• bed-level stratigraphic resolution

Environment/lithology: marine; conglomerate

• "The Jiufutang Formation is 140 to 380 m thick and consists of alternating purplish to grayish green conglomerates, sandstones, mudstones and shales, locally with thin coal beds and marls; it contains bivalves, gastropods and the fresh-water fish Lycoptera davidi. It is covered by the Fuxin Formation (Bureau of Geology and Mineral Resources of Nei Mongol Autonomous Région, 1991)." (Lü et al. 1999)

Size class: macrofossils

Collected by Gao Dian-Min in 1993; reposited in the IVPP

Primary reference: J.-C. Lü, Y. Kobayashi, and Z.-G. Li. 1999. A new species of Ikechosaurus (Reptilia: Choristodera) from the Jiufutang Formation (Early Cretaceous) of Chifeng City, Inner Mongolia. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre 69:37-47 [M. Carrano/M. Carrano/B. Allen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 199759: authorized by Alex Dunhill, entered by Bethany Allen on 13.02.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Choristodera -
Ikechosaurus gaoi n. sp.
Ikechosaurus gaoi n. sp. Lü et al. 1999 choristodere
IVPP VI1477 (holotype), a fragmentary skeleton including the crushed skull with lower jaw (VI1477-1), dorsal vertebrae with ribs and abdominal ribs (VI1477-2), other isolated vertebrae, one complete right ilium (VI1477-3), two femora (VI147-4, 5), one complete left radius (VI1477-6) and parts of the limb bones