Species: naga ARBEZ, SIDOR, & STEYER, 2018
Etymology: From the mythological monster 'Naga" (or Phaya Naga) believed to live in the Mekong River, which is close to the type locality.

Holotype: MDS-LPQ 2005-09

Locality: Right bank of the Mekong River, Ban Houaytan District, Luang Prabang Province, northern Laos.

Horizon: Purple Claystones Formation ('Zone des Argiles violettes' sensu Counillon 1896)

Biostratigraphy:

Age: Changxingian Stage, Latest Lopingian Subepoch, Latest Zechstein Epoch, Late Permian.

Material: Nearly complete skull.

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Species: hun LIU & CHEN, 2021
Etymology: Hun, meaning 'Xiongnu', refers to teh ancient nomadic people who lived in this region.

Holotype: IVPP V 23876

Locality: DQS 53, 40°43'8"N, 110°41'15"E, near Gongshanwan, Tumed Right Banner, Nei Mongol, China.

Horizon: Upper part of Member II, Naobaogou Formation.

Biostratigraphy:

Age: Changhsingian, Late Permian.

Material: Incomplete skull, incomplete left hemimandible and complete right hemimandible, 10 articulated vertebrae and some incomplete isolated vertebrae, ribs, left scapulocoracoid, humerus, ilia, incomplete right femur, nearly complete left femur, tibia, fibula, and some unidentified bone fragments.