Pk12 (Eocene of Myanmar)

Also known as Paukkaung kyitchaung 12

Where: Myanmar (21.7° N, 94.7° E: paleocoordinates 13.0° N, 93.1° E)

• coordinate stated in text

When: “Upper” Member (Pondaung Formation), Bartonian (41.3 - 38.0 Ma)

• The whole sequence of units was originally defined as the ‘Pondaung Sandstones’ by Cotter (1914), but the horizon yielding Eocene vertebrate fossils is now known as the ‘Upper Member’ of the Pondaung Formation (see Maung et al. 2005). The most recent age for this unit is ~39–38 Ma and so it can be regarded as middle Bartonian (see Tsubamoto et al. 2011).

• member-level stratigraphic resolution

Environment/lithology: fluvial; mudstone and sandstone

Size class: mesofossils

Collection methods: surface (float), surface (in situ),

Primary reference: T. Tsubamoto, N. Egi, M. Takai, C. Sein, and M. Maung. 2005. Middle Eocene ungulate mammals from Myanmar: A review with description of new specimens. Acta Palaeontologica Polonica 50(1):117-138 [T. Tsubamoto/T. Tsubamoto]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 151676: authorized by Jonathan Marcot, entered by Jonathan Marcot on 10.10.2013, edited by Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

 Perissodactyla - Deperetellidae
Bahinolophus birmanicus Pilgrim 1925 odd-toed ungulate
 Artiodactyla - Dichobunidae
Neochorlakkia myaingensis Ducrocq et al. 2022 even-toed ungulate