was named by Archangelsky (1972)
[Others samples: Prep. n° 742, coord,, 40.8/114.5; p.m. 707, coord. 28.5/107.6.
Others measurement: length, 22-33 µ, width, 14-25 µ.
Locality. Wells D-13, D-15, T-134, P-9, P-14.]. It is considered to be a form taxon. Its type specimen is Holotype: Prep. LP n° 742; coord. 38.7/120.3. Stored at Museo de La Plata, Paleobotanical division., a microspore (Spore), and it is a 3D fossil preserving soft parts. Its type locality is Pozo D-13
, which is in an Eocene coastal horizon in the Río Turbio Formation of Argentina.