† Riccia thongjaorokensis Hemantha Singh et Kishor 2009 .

J. Geol. Soc. India 73 (5): 606 (see Hermantha Singh & Kishor 2009).

“ Holotype: Specimen No. TRF 1101. Paratype: Specimen No. TRF 1102–1104. Locality: Sandstone of Laishong Formation of Barail group of early Oligocene epoch, Thongjaorok Stream (24º27’41”N and 93º44’40”E), Imphal Valley.”