B. Papp szerk.: Studia Botanica Hungarica 30-31. 1999-2000 (Budapest, 2000)

Rákosi, László; Barbacka, Mária: Upper Cretaceous flora from Ajka (W Hungary). I. Thallophyta

Division: Tracheophyta Class: Lycopsida Order: Isoëtales Family: Isoëtaceae Genus: Minerisporites Potonié 1956 Generotype: Minerisporites (al. Selaginellites) mirabilis (Miner 1935) Potonié 1956 Minerisporites borealis (Miner 1935) Potonié 1956 Fig. 19 Description: Trilete megaspore with cingulum and reticulated surface, 300-400 pm large. The dehiscence line reaches beyond the perine. Remark: It was found in the boreholes Cr-2, from 655.3 m, 631.4 m, Kf-2, from 702.65-702.85 m, 701.65-701.9 m and 700.8 m, Kf-6 from 630.4 m, Gy-9 from 590.4 m, 583.0 m, Gy12 from 540.0 m (dominant), 531.6, Gy15 from 496.6 and Nh-1, from 664.25 m. Order: Lycopodiales Family: Lycopodiaceae Genus: Vadaszisporites Deák et Combaz 1967 Generotype: Vadaszisporites (Microreticulatisporites) iirkutikus (Deák 1964) Deák et Combaz 1967 Vadaszisporites minutireticulatus Juhász 1975 Figs 46^19 Description: The trilete microspore with reticulated lumen. The size of particular microspores is about 40-50 pm, lumina of reticulum 0.3-0.5 pm. Remark: Only a small number of spore massulae were found in the borehole Kf-2. Class: Filicopsida Remarks: Among the examined specimens, remains of sporangia were often found. In the literature, fertile fem leaves are usually described with sporangia as