Legan, Pondaung Sandstone (Eocene of Myanmar)

Also known as AMNH A31 UCMP V83106

Where: Myanmar (21.9° N, 94.5° E: paleocoordinates 13.1° N, 92.9° E)

• coordinate estimated from map

• 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

Reposited in the AMNH

Primary reference: E. Colbert. 1938. Fossil mammals from Burma in the American Museum of Natural History. Bulletin of the American Museum of Natural History 74:255-436 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41320: authorized by John Alroy, entered by Erin Leckey on 12.07.2004, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Trionychidae
Trionychinae "small"2 softshell turtle
 Testudines - Carettochelyidae
Anosteira sp.2, "Burmemys magnifica" = Allaeochelys magnifica2
Anosteira sp.2 Leidy 1871 turtle
"Burmemys magnifica" = Allaeochelys magnifica2 Hutchison et al. 2004 turtle
Mammalia
 Perissodactyla - Amynodontidae
Paramynodon birmanicus odd-toed ungulate
 Hyaenodonta -
Kyawdawia lupina1 Egi et al. 2005 eutherian