Where: Liaoning, China (41.4° N, 121.4° E: paleocoordinates 44.1° N, 123.3° E)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Dawangzhangzi Member (Yixian Formation), Late/Upper Barremian to Late/Upper Barremian (130.0 - 122.5 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
Size class: macrofossils
Preservation: adpression, soft parts, original carbon
Collection methods: surface (in situ),
Primary reference: Q. Ji, Z.-X. Luo, C.-X. Yuan, J. R. Wible, J.-P. Zhang and J. A. Georgi. 2002. The earliest known eutherian mammal. Nature 416:816-822 [W. Clyde/J. Finarelli/O. Alfaro]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 | |
Tianyuraptor ostromi n. gen. n. sp.16
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Aves | |
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)
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Euenantiornithes indet.2, Dalingheornis liweii n. gen. n. sp.14, "Liaoxiornis delicatus n. gen. n. sp." = Liaoxiornis delicatus2, "Lingyuanornis parvus n. gen. n. sp." = Liaoxiornis delicatus2, Grabauornis lingyuanensis n. gen. n. sp.4
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Reptilia | |
Scansoriopteryx heilmanni n. gen. n. sp.3
Scansoriopteryx heilmanni n. gen. n. sp.3 Czerkas and Yuan 2002 maniraptoran CAGS02-IG-gausa-1/DM 607
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Dalinghosaurus longidigitus9 Ji 1998 squamates IG-02-7-16-2 (postcranial skeleton) and IVPP V13865 (skull & skeleton with integument)
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Mammalia | |
Eomaia scansoria n. gen. n. sp. Ji et al. 2002 eutherian | |
Akidolestes cifelli n. gen. n. sp.10
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Sinobaatar lingyuanensis n. gen. n. sp.8
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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)
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