Also known as Tmk

Where: Myanmar (21.8° N, 94.9° E: paleocoordinates 13.1° N, 93.2° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: 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).

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collection methods: collection is in the National Museum of Myanmar

Primary reference: S. Peigné, M. Morlo, Y. Chaimanee, S. Ducrocq, S. T. Tun and J.-J. Jaeger. 2007. New discoveries of hyaenodontids (Creodonta, Mammalia) from the Pondaung Formation, middle Eocene, Myanmar—paleobiogeographic implications. Geodiversitas 29(3):441-458 [T. Tsubamoto/T. Tsubamoto/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 78057: authorized by John Alroy, entered by John Alroy on 25.01.2008, edited by K. Christopher Beard, Patricia Holroyd and Bethany Allen

Creative Commons license: CC BY (attribution)