Chaungtha
Basic information
Sample name: Chaungtha

Reference: O. Chavasseau, Y. Chaimanee, S. Thura Tun, A. Naing Soe, J. C. Barry, B. Marandat, J. Sudre, L. Marivaux, S. Ducrocq, and J.-J. Jaeger. 2006. Chaungtha, a new Middle Miocene mammal locality from the Irrawaddy Formation, Myanmar. Journal of Asian Earth Sciences 28:354-362 [ER 4410]
Geography
Country: Myanmar

Coordinate: 23.03° N, 95.98° E
Latlng basis: estimated from map

Formation: Irrawaddy

Time interval: Middle Miocene

Zone: Serravallian

Geography comments: "5 km Southwest of the city of Male" (basis of coordinate)
spatial extent is unclear
"the locality of Chaungtha could be referred either to the Pegu Group or the Irrawaddy Formation" but is believed to be from the Irrawaddy based on "Several factors"
"roughly contemporaneous with the Chinji Formation of India–Pakistan (ca. 14–11 Ma)" and therefore approximately Serravallian

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Environment
Lithology: sandstone

Taphonomic context: fluvial deposit

Habitat comments: "The sandstone levels of the upper part of the sequence, from which the vertebrate fossils were collected (Fig. 2), exhibit a clear fining upward, conglomeratic elements being found at their base" and were "deposited as cross-beds" that "represent a typical point bar sequence of fluvial sedimentation" within "a migrating fluvial channel"

Methods
Life forms: ungulates

Excluded forms: turtles, other reptiles

Sample size: 14 specimens

Years: 2001, 2002

Museum: National Museum of Myanmar

Net or trap nights: 0

Basal area status: not applicable

Sampling comments: "collected in 2001 and 2002 by the 'French-Myanmar Team' formed by the Paleontology Departement of the University Montpellier 2 (France) and the Geology Department of the Yangon University (Myanmar). All the fossils described in this paper are housed at the Paleontological Collection of the National Museum of Myanmar (Yangon)"
"crocodile teeth and fragmentary turtle plates" are also present

Metadata
Sample no: 4690

Contributor no: John Alroy

Enterer: John Alroy

Created: 2025-09-03 02:30:50

Modified: 2025-09-03 02:30:50

Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
7 species
4 singletons
total count 14
geometric series index: 24.9
Fisher's α: 5.571
geometric series k: 0.7647
Hurlbert's PIE: 0.7692
Shannon's H: 1.7298
Good's u: 0.7249
Register
†Brachypotherium fatehjangense (rhinoceros)3
Rhinocerotidae indet.2
definitely not the same as Brachypotherium
†Conohyus thailandicus 1
Siamotragulus sp. 5
cf.: larger than the following
†Siamotragulus cf. sanyathanai 1
Bovidae indet.1
questionably
Gomphotheriidae indet.1