Patellasporites sp., 1970

Legrand, Julien, Pons, Denise, Nishida, Harufumi & Yamada, Toshihiro, 2011, Barremian palynofloras from the Ashikajima and Kimigahama formations (Choshi Group, Outer Zone of south-west Japan), Geodiversitas 33 (1), pp. 87-135 : 109

Patellasporites sp.

Patellasporites sp. A, Legrand, Palynologie des dépôts Jurassique supérieur et Crétacé inférieur du Japon, et provinces paléofloristiques du sud-est asiatique: 172, pl. XV, fig. 2 (2009).

OCCURRENCE. — Ashikajima Fm.

DESCRIPTION

Trilete microspore. Amb circular. The laesurae are straight, slightly raised, thicken, and extend

to the inner side of the patella. Proximal face psilate. Verrucae merge at the equator, forming a patella, but are separated by thin radial canals. The distal face is covered by verrucae of various sizes, bigger near the equator than at the pole, which merge and let only very small irregular spaces between them. Equatorial diameter = 30 µm.

BOTANICAL AFFINITIES

Filicopsida.