UCMP V96009, Pondaung Sandstone (Eocene of Myanmar)

Where: Myanmar (22.0° N, 94.5° E: paleocoordinates 13.1° N, 92.9° E)

• coordinate based on unpublished field data

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; brown, yellow sandstone and red, blue mudstone

• fossils come out of reddish to purplish mudstone

Size class: macrofossils

Reposited in the UCMP

• "...[specimens reported in this article] have been collected over the past 80 yrs. As a consequence, most specimens have limited, descriptive locality data that provides locations based on distances from known villages. Recent fieldwork has provided detailed, GPS based mapping of the most productive outcrops and permit us to place most of the historic localities in a more accurate and stratigraphically detailed framework." Yet they only place a few localities on the figured map. EL

Primary reference: J. H. Hutchison, P. A. Holroyd, and R. L. Ciochon. 2004. A preliminary report on southeast Asia's oldest Cenozoic turtle fauna from the late middle Eocene Pondaung Formation, Myanmar. Asiatic Herpetological Research 10:38-52 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41463: authorized by John Alroy, entered by Erin Leckey on 14.07.2004, edited by Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

• fossil wood is commonly found
Reptilia
 Testudines - Trionychidae
Trionychinae "large" softshell turtle
 Testudines - Carettochelyidae
Anosteira sp., "Burmemys magnifica" = Allaeochelys magnifica
Anosteira sp. Leidy 1871 turtle
Peripheral 9 or 10
"Burmemys magnifica" = Allaeochelys magnifica Hutchison et al. 2004 turtle
 Testudines - Pantestudinidae
Testudinidae indet. Batsch 1788 turtle
Partial right epiplastron
 Squamata -
Barbaturex morrisoni n. gen. n. sp.
Barbaturex morrisoni n. gen. n. sp. Head et al. 2013 lizard
UCMP 142227 (holotype), partial right dentary; UCMP 128388, anterior dentary; UCMP 128410, 130290, 130291, partial left dentaries; UCMP 130292, fused frontals assigned to the taxon on the basis of size; NMMP-KU 0092, partial left dentary; NMMP-KU 1923, partial left dentary; NMMP-KU 1924–1926, partial right dentaries