Sinzwe, Pondaung Sandstone (Eocene of Myanmar)

Where: Myanmar (21.8° N, 94.6° E: paleocoordinates 13.0° N, 93.0° E)

• coordinate based on nearby landmark

• outcrop-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).

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; brown, yellow sandstone and red, white, yellow siliciclastic

• successive beds of cherry-red, bright buff and cream-white earths interstratified with brown or buff sandstones

Size class: macrofossils

Collection methods: collected by H. M. Lahiri, specimens housed in the Geological Museum, Calcutta

Primary reference: G. E. Pilgrim. 1925. The Perissodactyla of the Eocene of Burma. Memoirs of the Geological Survey of India 8(3):1-28 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41179: authorized by John Alroy, entered by Erin Leckey on 07.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Perissodactyla - Brontotheriidae
? Sivatitanops rugosidens n. sp. Pilgrim 1925 brontothere
fragments of upper teeth
? Eotitanotherium lahirii n. sp. brontothere
fragment of maxilla with teeth, isolated teeth
 Artiodactyla - Lophiomerycidae
Indomeryx cotteri n. sp. Pilgrim 1928 ruminant
right mandibular ramus with p4-m3