Cingutriletes, Pierce, 1961 emend. Dettmann, 1963

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 : 108

publication ID

https://doi.org/10.5252/g2011n1a6

persistent identifier

https://treatment.plazi.org/id/039A87FC-FFD4-6178-FC93-FF42FC2DFD42

treatment provided by

Felipe (2021-03-11 13:46:52, last updated 2021-03-11 13:46:55)

scientific name

Cingutriletes
status

 

Cingutriletes sp. ( Fig. 10Q)

OCCURRENCE. — Ashikajima Fm.

DESCRIPTION

Cingulate trilete microspore.Amb rounded triangular with straight to convex sides.The laesurae are straight and extend to the ⅔ of the spore radius (a little before the cingulum). The cingulum is wide (4-5 µm, that is to say more than 1/5 of the spore radius). Exine psilate. Equatorial diameter = 30-35 µm.

BOTANICAL AFFINITIES

Filicopsida ( Couper 1958), Lycopsida ( Selaginellaceae ?) ( Pierce 1961).

COUPER R. A. 1958. - British Mesozoic microspores and pollen grains, a systematic and stratigraphic study. Palaeontographica 103 B: 75 - 179.

PIERCE R. L. 1961. - Lower Upper Cretaceous plant microfossils from Minnesota. Minnesota Geological Survey Bulletin 42, 86 p.