Myaing 1, Pondaung Sandstone (Eocene of Myanmar)

Where: Myanmar (21.6° N, 94.9° E: paleocoordinates 13.0° N, 93.3° 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 41158: authorized by John Alroy, entered by Erin Leckey on 07.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Perissodactyla - Brontotheriidae
Sivatitanops cotteri n. sp. Pilgrim 1925 brontothere
M2, P2, P3, C
 Perissodactyla - Amynodontidae
Metamynodon birmanicus odd-toed ungulate
right and left maxilla
 Artiodactyla -
"Anthracothema pangan" = Anthracotherium pangan
"Anthracothema pangan" = Anthracotherium pangan Pilgrim and Cotter 1916 even-toed ungulate
specimen count approximate "a canine, some upper molars, a p4 and a maxilla with a poorly preserved p3 and p4