Li Mae Long Explained

Mae Long Formation
Type:	Geological formation
Age:	Early Miocene (MN 4) ~
Period:	Burdigalian
Prilithology:	Sandstone
Region:	Lamphun Province
Extent:	Li Basin

The Mae Long Formation in the Li Basin (also referred to as Li Mae Long) is a fossil site in Lamphun Province, Thailand. The fossils found are thought to date to the late Early Miocene, about 18 million years ago, corresponding to the European zone MN 4.^[1]

Fossil content

Mammals found at the site include:^[1]

Metatherians

• Siamoperadectes minutus

Lipotyphlans

• Hylomys engesseri
• Neotetracus butleri
• Thaiagymnura equilateralis
• Unidentified Erinaceidae, possibly Mioechinus
• Scapanulus lampounensis

Bats

• Unidentified species possibly belonging to Taphozous
• Unidentified species of Megaderma
• Hipposideros felix
• H. khengkao
• Rhinolophus yongyuthsi
• Unidentified species of Rhinolophoidea
• Ia lanna
• Rhizomops mengraii
• Unidentified species of Vespertilionidae

Treeshrews

• Tupaia miocenica

Primates

• ?Nycticebus linglom
• Tarsius thailandica

Rodents

• Ratufa maelongensis
• Unidentified species possibly belonging to Atlantoxerus
• Democricetodon kaonou
• Diatomys liensis
• Neocometes orientalis
• Potwarmus thailandicus
• Prokanisamys benjavuni
• Spanocricetodon janvieri

Carnivorans

• Two unidentified species

Proboscideans

• Unidentified species

Perissodactyls

• Unidentified species

Artiodactyls

• Conohyus sindiensis
• Siamotragulus haripounchai
• Stephanocemas rucha
• Unidentified species possibly belonging to Homoiodorcas

References

Bibliography

• Mein, P. and Ginsburg, L. 1997. Les mammifères du gisement miocène inférieur de Li Mae Long, Thaïlande : systématique, biostratigraphie et paléoenvironnement. Geodiversitas 19(4):783–844 (in French). Abstract in French and English

Notes and References

1. Mein and Ginsburg, 1997, p. 783