Dawangzhangzi (Cretaceous of China)

Where: Liaoning, China (41.4° N, 121.4° E: paleocoordinates 44.0° N, 123.5° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Yixian Formation (Jehol Group), Barremian (129.4 - 125.0 Ma)

• thought to be Barremian by Li and Luo 2006 based on Yixian Formation radioisotopic dates. From the Dawangzhangzhi Beds

Environment/lithology: lacustrine; lithified, gray, silty shale

• "light-grey tuffaceous shales" (O'Connor et al. 2010)

Size class: macrofossils

Preservation: adpression, soft parts, original carbon

Collection methods: surface (in situ),

Primary reference: Q. Ji, Z.-X. Luo, C.-X. J.R. Yuan Wible, J.-P. Zhang, and J.A. Georgi. 2002. The earliest known eutherian mammal. Nature 416:816-822 [W. Clyde/J. Finarelli/R. Whatley]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13937: authorized by Will Clyde, entered by John Finarelli on 03.05.2002, edited by John Alroy, Matthew Carrano, Roger Benson, Jonathan Tennant, Philip Mannion and Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Avetheropoda - Scansoriopterygidae
Scansoriopteryx heilmanni n. gen. n. sp.3
Scansoriopteryx heilmanni n. gen. n. sp.3 Czerkas and Yuan 2002 avialan
CAGS02-IG-gausa-1/DM 607
Aves
 Ornithothoraces - Hongshanornithidae
Longicrusavis houi n. gen. n. sp.13 O'Connor et al. 2010 bird
Hongshanornis longicresta1 Zhou and Zhang 2005 bird
DNHM D2945/6
 Ornithothoraces -
Eogranivora edentulata n. gen. n. sp.15
Eogranivora edentulata n. gen. n. sp.15 Zheng et al. 2018 bird
STM 35-3 - holotype; previously referred to Hongshanornis longicresta by Zheng et al. (2011)
 Enantiornithes -
Euenantiornithes indet.2, "Liaoxiornis delicatus n. gen. n. sp." = Liaoxiornis delicatus2, "Lingyuanornis parvus n. gen. n. sp." = Liaoxiornis delicatus2, Grabauornis lingyuanensis n. gen. n. sp.4, Dalingheornis liweii n. gen. n. sp.14
Euenantiornithes indet.2 Chiappe 2002 bird
GMV-2159
"Liaoxiornis delicatus n. gen. n. sp." = Liaoxiornis delicatus2 Hou and Chen 1999 bird
NIGP-130723
"Lingyuanornis parvus n. gen. n. sp." = Liaoxiornis delicatus2 Hou and Chen 1999 bird
GMV-2156
Grabauornis lingyuanensis n. gen. n. sp.4 Dalsatt et al. 2014 bird
V14595, complete skeleton
Dalingheornis liweii n. gen. n. sp.14 Zhang et al. 2006 bird
CNU VB2005001
Reptilia
 Avetheropoda -
Sinosauropteryx sp.11 Ji and Ji 1996 coelurosaur
IVPP V12415, 14202, D2141
 Avetheropoda - Dromaeosauridae
Tianyuraptor ostromi n. gen. n. sp.16
Tianyuraptor ostromi n. gen. n. sp.16 Zheng et al. 2009 coelurosaur
STM1-3
 Squamata -
Dalinghosaurus longidigitus9 Ji 1998 lizard
IG-02-7-16-2 (postcranial skeleton) and IVPP V13865 (skull & skeleton with integument)
Yabeinosaurus robustus5 Dong et al. 2017 lizard
IVPP V13284 (small, immature skeleton)
 Choristodera -
Monjurosuchus splendens6 Endo 1940 choristodere
Mammalia
 Eutriconodonta -
Chaoyangodens lii n. gen. n. sp.7
Chaoyangodens lii n. gen. n. sp.7 Hou and Meng 2014 mammal
A skeleton preserved in a laminated siltstone that is split into two slabs (JZT005-2010, Ji-Zan-Tang Paleontological Museum, Chaoyang, Liaoning)
 Tribosphenida -
Sinodelphys szalayi n. gen. n. sp.12, Eomaia scansoria n. gen. n. sp.
Sinodelphys szalayi n. gen. n. sp.12 Luo et al. 2003 eutherian
Eomaia scansoria n. gen. n. sp. Ji et al. 2002 eutherian
 Theriiformes - Spalacotheriidae
Akidolestes cifelli n. gen. n. sp.10
Akidolestes cifelli n. gen. n. sp.10 Li and Luo 2006 mammal
 Multituberculata -
Sinobaatar lingyuanensis n. gen. n. sp.8
Sinobaatar lingyuanensis n. gen. n. sp.8 Hu and Wang 2002 multituberculate
IVPP V12517 (holotype)