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

Remark: KNOBLOCH (1984) mentioned some samples of C. carbunculus from Alsópere borehole No Ot 84. Genus: Verrutriletes (van der Hammen 1954) Potonié 1956 Generotype: Verrutriletes (al. Triletes) compostipunctatus (Dijkstra 1949) Potonié 1956 Verrutriletes compostipunctatus (Dijkstra 1949) Potonié 1956 Description: Trilete, rounded megaspore, 200-300 um in diameter, the surface with scattered Verrucae 5-10 um large. Remark: This species was found in the boreholes Kf-1 from 628.3 m, Kf-6 from 569.0 m, and Nh-1 from 641.7 m and 635.2 m, as well as bench sample No 100. Subinfraturma: Baculati Genus: Bacutriletes (van der Hammen 1954) Potonié 1956 Generotype: Bacutriletes (al. Triletes) tylosus (Harns 1935) Potonié 1956 Bacutriletes ajkaënsis n. sp. Figs 2-8 Holotype: No BP 2000.2.1, Figs 2-3. Type locality: Ajka, Armin shaft, Gyula field, gallery 112, IV bench sample No 84. Stratigraphical position: yellow marl Ajka Coal Formation, Late Santonian. Etymology: The locality in Ajka. Diagnosis: Rounded, triangle shaped megaspore 510 x 523 urn in size, both at the proximal and distal side ornamented by bacula. The Y mark slightly visible, because of the presence of bacula. The exosporium among the bacula shows reticulated surface (Figs 4-5), the surface of the baculum is also reticulated (Fig. 6). The ectexosporium has spongy-like structure (Figs 7-8). Discussion: The megaspore differs from B. volfarticensis Knobloch (1984) in the size of the bacula, which here in B. ajkaënsis are considerably thinner. It is also different from B. nanus (Dijkstra 1949) Potonié 1956 because of its smaller size.