Lijiawa mammalian fossil locality (Oligocene of China)

Also known as Caijiachong (above the marlite bed)

Where: Yunnan, China (25.4° N, 104.0° E: paleocoordinates 24.8° N, 102.8° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Caijiachong Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• Fossiliferous layer above the marlite bed in the Caijiachong Formation; about 50 m higher than the late Eocene upper fossiliferous layer at the Caijiachong locality, and about 130 m higher than the late Eocene lower fossiliferous layer at the Caijiachong locality

• bed-level stratigraphic resolution

Environment/lithology: fluvial; gray, yellow, calcareous mudstone and marl

• A small outcrop about 5 m thick consists of a bed of light grayish yellow calcareous mudstone with bedded thin layers of marlstone.

Size classes: macrofossils, mesofossils

Collected in 2008; reposited in the IVPP

Primary reference: O. Maridet and X. Ni. 2013. A New Cricetid Rodent from the Early Oligocene of Yunnan, China, and its Evolutionary Implications for Early Eurasian Cricetids. Journal of Vertebrate Paleontology 33(1):185-194 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 175142: authorized by Philip Mannion, entered by Philip Mannion on 03.12.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Primates - Eosimiidae
Bahinia banyueae n. sp.3 Ni et al. 2016 monkey
IVPP V22730 - holotype; hypodigm and referred material: IVPP V 22731-22740
 Primates - Tarsiidae
Oligotarsius rarus n. gen. n. sp.3
Oligotarsius rarus n. gen. n. sp.3 Ni et al. 2016 tarsier
IVPP V22727 - holotype; hypodigm: IVPP V 22728 and 22729
 Primates - Sivaladapidae
Yunnanadapis imperator n. sp.3, Yunnanadapis folivorus n. gen. n. sp.3, Laomaki yunnanensis n. gen. n. sp.3
Yunnanadapis imperator n. sp.3 Ni et al. 2016 primate
IVPP V22706 - holotype; hypodigm: IVPP V 22707
Yunnanadapis folivorus n. gen. n. sp.3 Ni et al. 2016 primate
IVPP V22702 - holotype; hypodigm: IVPP V 22703-22705
Laomaki yunnanensis n. gen. n. sp.3 Ni et al. 2016 primate
IVPP V22708 - holotype; hypodigm: IVPP V 22709-22716
 Primates - Ekgmowechashalidae
Gatanthropus micros n. gen. n. sp.3
Gatanthropus micros n. gen. n. sp.3 Ni et al. 2016 primate
IVPP V22717 - holotype; hypodigm: IVPP V 22718-22726
 Scandentia - Tupaiidae
Ptilocercus kylin n. sp.1 Li and Ni 2016 Pen-tailed tree shrew
IVPP V20696 - holotype; hypodigm: IVPP V20689-20695 and 20697-20699
 Rodentia - Cricetidae
Paracricetops virgatoincisus n. gen. n. sp. Maridet and Ni 2013 mouse
IVPP V17821 - holotype
Cricetops auster n. sp.2 Li et al. 2016 mouse
Two unnamed species
Eucricetodon caducus3 Shevyreva 1967 mouse
 Perissodactyla - Amynodontidae
Gigantamynodon giganteus1 Xu 1961 odd-toed ungulate
"new"