Dictyozonia E.M.FRIIS, P.R.CRANE et K.R.PEDERSEN, 2019

Friis, Else Marie, Crane, Peter R. & Pedersen, Kaj Raunsgaard, 2019, The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community, Fossil Imprint 75 (2), pp. 153-257 : 221

Genus Dictyozonia E.M.FRIIS, P.R.CRANE et K.R.PEDERSEN gen. nov.

T y p e. Designated here. Dictyozonia pusilla E.M.FRIIS ,

P.R.CRANE et K.R.PEDERSEN gen. et sp. nov.

P l a n t F o s s i l N a m e s R e g i s t r y N u m b e r.

PFN000522 (for new genus).

E t y m o l o g y. From Greek diktyotó for reticulum and zoni for belt or girdle referring to the reticulate equatorial band of the pollen grains.

D i a g n o s i s. Stamen tetrasporangiate. Pollen small, almost circular in equatorial outline, monocolpate. Colpus extending for the full length of the grain. Exine semitectatereticulate in the equatorial region, psilate to psilatepunctate in polar regions. Pollen columellate, reticulum heterobrochate grading into the psilate regions near the poles. Muri smooth with a slightly rounded profile, supported by short, scattered columellae. Colpus margin distinct. Colpus membrane verrucate.

C o m m e n t s o n t h e g e n u s.Pollenof Dictyozonia is similar to that of Similipollis and Juhaszia in having a long colpus and a graded reticulum, but pollen of Dictyozonia differs from both taxa in the very distinctive reticulate equatorial band and the broad psilate zone on both the proximal and distal faces of the grains.