Yuanjiawa, Dapingfang (Cretaceous of China)

Where: Liaoning, China (41.6° N, 120.2° E: paleocoordinates 44.8° N, 120.2° E)

• coordinate stated in text

• small collection-level geographic resolution

When: 3 Member (Jiufotang Formation), Aptian (125.0 - 113.0 Ma)

• = Chiufotang Fm. Yuanjiawa Bed = middle of 3rd Member

•Chang et al. (2009) provide a Ar/Ar date of 122.1 Ma for the base of the Jiufutang. The age of the top of the formation is uncertain.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; gray, silty mudstone and brown, yellow marl

Size class: macrofossils

Preservation: adpression

Collected by numerous in 2004-2015

Collection methods: quarrying, surface (in situ),

• LPM: Liaoning Paleontological Museum, Western Liaoning Institute of Mesozoic Paleontology, Shenyang Normal University

Primary reference: K.-Q. Gao, D. T. Ksepka, L. Hou, Y. Duan, and D. Hu. 2007. Cranial morphology of an Early Cretaceous monjurosuchid (Reptilia: Diapsida) from Liaoning Province of China and evolution of the choristoderan palate. Historical Biology 19(3):215-224 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 79941: authorized by Matthew Carrano, entered by Matthew Carrano on 27.03.2008, edited by Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines -
Testudines indet.7 Batsch 1788 turtle
 Theropoda - Dromaeosauridae
Microraptor sp.7 Xu et al. 2000 maniraptoran
Aves
  -
Jeholornis sp.7 Zhou and Zhang 2002 bird
 Confuciusornithiformes - Confuciusornithidae
Confuciusornis sp.7 Hou et al. 1995 bird
 Ornithothoraces - Hongshanornithidae
Parahongshanornis chaoyangensis n. gen. n. sp.4 Li et al. 2011 bird
PMOL-AB00161 - holotype (partial skeleton)
 Enantiornithes - Longipterygidae
Longipteryx chaoyangensis6 Zhang et al. 2000 bird
DNHM-D2889
 Cathayornithiformes - Alethoalaornithidae
Alethoalaornis agitornis n. gen. n. sp.3
Alethoalaornis agitornis n. gen. n. sp.3 Li et al. 2007 true wing bird
LPM 00009, 00032, 00038, 00040, 00053
 Enantiornithes -
Yuanjiawaornis viriosus n. gen. n. sp.2
Yuanjiawaornis viriosus n. gen. n. sp.2 Hu et al. 2015 bird
PMOL AB00032, nearly complete and mostly articulated postcranial skeleton, missing the skull, cervical and cranial thoracic vertebrae, and most of the manual and pedal digits
 Eoenantiornithiformes - Eoenantiornithidae
Dapingfangornis sp.7 Li et al. 2006 bird
Reptilia
 Pterosauria - Istiodactylidae
Liaoxipterus brachyognathus n. gen. n. sp.1 Dong and Lü 2005 pterosaur
CAR-0018, nearly complete lower jaw
 Pterosauria -
Longchengpterus zhaoi n. gen. n. sp.5
Longchengpterus zhaoi n. gen. n. sp.5 Wang et al. 2006 pterosaur
LPM 00023, partial skeleton with incomplete skull; may be synonymous with Liaoxipterus
 Pterosauria - Azhdarchidae
Chaoyangopterus zhangi7 Wang and Zhou 2003 pterosaur
LPM-R00076
 Choristodera -
Philydrosaurus proseilus Gao and Fox 2005 choristodere
LPMC 021 (skull [= SNU field #043]); PMOL-AR00141 (cranium and postcranium of a juvenile specimen) and PMOL-AR00173 (incomplete braincase with upper and lower jaws of a large adult)