Jp. Laveine et al., THE CARBONIFEROUS FLORA OF NORTHEASTERN THAILAND - ITS PALEOGEOGRAPHIC IMPORTANCE, Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre, 317(2), 1993, pp. 279-285
Two fossiliferous localities in NE Thailand have yielded typical euram
erian Carboniferous plants. At one of the localities the genus Paripte
ris Gothan was found. Consequently the Indochina block belonged to the
domain of the ''Paripteris flora'' and was connected with the north p
aleotethysian land masses as early as the late early Carboniferous tim
es.