Species: macrobios  TONG, CLAUDE, NAKSRI, SUTEETHORN, BUFFETAUT, KHANSUBHA, WONGKO, & YUANGDETKLA, 2009
Etymology: Greek, macrobios, "long life": in honor of His Majesty King Rama IV's eightieth birthday.

Holotype: MD8-2

Locality: Kham Phok, Mukdahan Province, Khorat Plateau, NE Thailand.

Horizon: Phu Kradung Formation.

Biostratigraphy:

Age: Terminal Jurassic-Basal Cretaceous.

Material: A nearly complete carapace articulated with a partial plastron, pelvic girdle and a cervical vertebra.

Referred material:

MD8-1: A complte carapace articulated with partial plastron, and pelvic girdle.

MD8-3: Incomplete skull.

MD8-4: An isolated cervical.

MD8-5: A humerus.

MD8-6: An incomplete femur.

MD8-7: A distal phalanx.

Number: Not given: Other limb bone fragments and shell fragments.

Locality: Huai Sai, Mukdahan Province, Khorat Plateau, NE Thailand.

Horizon: Phu Kradung Formation.

Biostratigraphy:

Age: Terminal Jurassic-Basal Cretaceous.

Material:

MD4-1: An incomplete carapace.

 

Locality: Dan Luang locality, Mukdahan Province, Khorat Plateau, NE Thailand.

Horizon: Phu Kradung Formation.

Biostratigraphy:

Age: Terminal Jurassic-Basal Cretaceous.

Material:

MD3-1: A partial shell with anterior lobe of plastron, nuchal, first costal, and 2 peripherals.

Number: Not given: Numberus fragments of plates.

 

Locality: Huai Pai Locality, Mukdahan Province, Khorat Plateau, NE Thailand.

Horizon: Phu Kradung Formation.

Biostratigraphy:

Age: Terminal Jurassic-Basal Cretaceous.

Material:

MD5-1: An incomplete anterior lobe of plastron.

Unnumbered: An isoalted entoplastron.