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
 Insectivora - Tupaiidae
Ptilocercus kylin n. sp.1 Li and Ni 2016 Pen-tailed tree shrew
IVPP V20696 - holotype; hypodigm: IVPP V20689-20695 and 20697-20699
 Perissodactyla - Amynodontidae
Gigantamynodon giganteus1 Xu 1961 odd-toed ungulate
"new"
 Rodentia - Cricetidae
Eucricetodon caducus3 Shevyreva 1967 mouse
Cricetops auster n. sp.2 Li et al. 2016 mouse
Two unnamed species
Paracricetops virgatoincisus n. gen. n. sp. Maridet and Ni 2013 mouse
IVPP V17821 - holotype
 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 - Eosimiidae
Bahinia banyueae n. sp.3 Ni et al. 2016 monkey
IVPP V22730 - holotype; hypodigm and referred material: IVPP V 22731-22740
 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
 Primates - Sivaladapidae
Laomaki yunnanensis n. gen. n. sp.3, Yunnanadapis imperator n. sp.3, Yunnanadapis folivorus n. gen. n. sp.3
Laomaki yunnanensis n. gen. n. sp.3 Ni et al. 2016 primate
IVPP V22708 - holotype; hypodigm: IVPP V 22709-22716
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