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Trionyx johnsoni Gilmore 1931

PaleoDB taxon number: 360705

Alternative combination: Amyda johnsoni

Synonym: Amyda neimenguensis Yeh 1965 (taxon 340874)

Full reference: C. W. Gilmore. 1931. Fossil turtles of Mongolia. Bulletin of the American Museum of Natural History 59:213-257

Belongs to Trionyx according to G. L. Georgalis and W. G. Joyce 2017

Sister taxa: Trionyx admirabilis, Trionyx aequa, Trionyx allani, Trionyx austerus, Trionyx baynshirensis, Trionyx beecheri, Trionyx boulengeri, Trionyx capellinii, Trionyx dissolutus, Trionyx ellipticus, Trionyx eloisae, Trionyx foveatus, Trionyx gangeticus, Trionyx gilbentuensis, Trionyx gobiensis, Trionyx gregarius, Trionyx henrici, Trionyx ikoviensis, Trionyx impressus, Trionyx jixiensis, Trionyx kansaiensis, Trionyx latus, Trionyx leucopotamicus, Trionyx linchuensis, Trionyx messelianus, Trionyx miensis, Trionyx minusculus, Trionyx miocaenus, Trionyx mira, Trionyx ninae, Trionyx onomatoplokos, Trionyx phayrei, Trionyx pliocenicus, Trionyx reesidei, Trionyx riabinini, Trionyx robustus, Trionyx shiluutulensis, Trionyx silvestris, Trionyx singularis, Trionyx triunguis, Trionyx uintaensis, Trionyx vegetus, Trionyx vindobonensis

Type specimens:

  • Trionyx johnsoni: AMNH 6357, a dermal scale. Its type locality is Telegraph Line Camp, which is in an Eocene fluvial conglomerate in the Irdin Manha Formation of China.
  • Amyda neimenguensis: IVPP V 2870, a partial skeleton (carapace). Its type locality is Ulan Shireh (SSPE), which is in an Eocene terrestrial horizon in the Shara Murum Formation of China.