Bayan Ulan site (lower 3 m) (Paleocene of China)

Also known as Level 1

Where: Nei Mongol, China (43.2° N, 111.6° E: paleocoordinates 44.2° N, 102.8° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Nomogen Formation, Late/Upper Paleocene (58.7 - 55.8 Ma)

• Upper Nomogen formation at Bayan Ulan (within the lower 3 m of the section), late Paleocene

Environment/lithology: terrestrial; red, muddy siltstone

• Reddish muddy siltstone

Size classes: macrofossils, mesofossils

Collected in 1987 and 1992–1995; reposited in the IVPP

Primary reference: J. Meng, A. R. Wyss, Y. Hu, Y. Wang, G. J. Bowen and P. L. Koch. 2005. Glires (Mammalia) from the Late Paleocene Bayan Ulan Locality of Inner Mongolia. American Museum Novitates 3473:1-25 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 133389: authorized by Philip Mannion, entered by Philip Mannion on 11.09.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Cimolesta -
Cimolesta indet. McKenna 1975 eutherian
 Cimolesta - Pastoralodontidae
Convallisodon haliutensis n. sp.1 Chow and Qi 1978 pantodont
IVPP V5486 - type
Convallisodon convexus n. gen. n. sp.1 Chow and Qi 1978 pantodont
IVPP V5485 - holotype
Pastoralodon lacustris n. gen. n. sp.1 Chow and Qi 1978 pantodont
IVPP V5481 - holotype
 Cimolesta - Sarcodontidae
Hyracolestes ermineus Matthew and Granger 1925 eutherian
Sarcodon pygmaeus1 Matthew and Granger 1925 eutherian
IVPP V5469
Sarcodon minor n. sp.4 Meng et al. 1998 eutherian
IVPP V11134 - type
 Eutheria -
 Glires -
? Rodentia indet.1 rodent
IVPP V5536
 Rodentia - Alagomyidae
Tribosphenomys minutus n. gen. n. sp.3
Tribosphenomys minutus n. gen. n. sp.3 Meng et al. 1994 rodent
IVPP 10775 - holotype (left maxilla, mandible and teeth)
 Glires -
Palaeomylus sp., Eomylus bayanulanensis n. sp., "Mimotona borealis n. sp." = Eomylus borealis1
Palaeomylus sp. Meng et al. 2005 placental
IVPP V14125.1 (fragmentary left mandible with erupting p4 and partial m1), V14125.2 (an isolated right m1), V14125.3 (a talonid of left m3), V14125.4 (a talonid of right m2), V14125.5 (a fragmentary right mandible with broken incisor and roots of p3–m2 are preserved). These specimens were previously referred to Eomylus borealis (Dashzeveg and Russell, 1988; Meng et al., 1998)
Eomylus bayanulanensis n. sp. Meng et al. 2005 placental
IVPP V14126.1 - type (right M2); referred material: V14126.2 (a left maxilla with M1–3 in which the labial edges of the teeth are incomplete), V14127.1 (a fragmentary right mandible with m1–3), V14127.2 (a fragmentary left mandible with partial m2–3), V14127.3 (a fragmentary right mandible with broken m2–3 and a separated anterior portion of a left mandible with incisor [from the same nodule containing V14126.2]) and V14127.4 (a left m3 with little wear)
"Mimotona borealis n. sp." = Eomylus borealis1 Chow and Qi 1978 placental
IVPP V5531 - type
 Perissodactyla -
Perissodactyla indet. odd-toed ungulate
 Tribosphenida - Nyctitheriidae
Bayanulanius tenuis n. gen. n. sp.4
Bayanulanius tenuis n. gen. n. sp.4 Meng et al. 1998 placental
IVPP V11133 - type
 Ferae - Viverravidae
Viverravus sp. Marsh 1872 placental
 Ungulata - Prodinoceratidae
 Insectivora -
Pseudictops lophiodon1 Matthew et al. 1929 insectivoran
IVPP V5471
 Acreodi - Mesonychidae
Pachyaena sp., "Dissacus serratus" = Dissacus serratus2, "Plagiocristodon serratus n. gen. n. sp." = Dissacus serratus1
Pachyaena sp. Cope 1874 condylarth
"Dissacus serratus" = Dissacus serratus2 Chow and Qi 1978 condylarth
IVPP V15914 and 15915
"Plagiocristodon serratus n. gen. n. sp." = Dissacus serratus1 Chow and Qi 1978 condylarth
IVPP V5480 - holotype
 Hyaenodonta -
Prolimnocyon chowi n. sp.4 Meng et al. 1998 eutherian
IVPP V11138 - type
 Tribosphenida - Arctostylopidae
Palaeostylops iturus1 Matthew and Granger 1925 eutherian
IVPP V4489-5530
Palaeostylops macrodon1 Matthew et al. 1929 eutherian
IVPP V5531-5535
 Multituberculata - Lambdopsalidae
Prionessus cf. lucifer Matthew and Granger 1925 multituberculate
Lambdopsalis bulla n. gen. n. sp.1 Chow and Qi 1978 multituberculate
IVPP V5429 - holotype