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

The entire material is stored as slides for examination in light microscope or SEM (in this case they were covered by gold) in the palaeontological collections of the Hungarian Geological Survey, Budapest. The two holotypes {Bacutriletes ajkaënsis n. sp. (No BP 2000.2.1) and Spermatites kaptalanfaënsis n. sp. No BP 2000.1.1) have been preserved in the Hungarian Natural History Museum, Budapest. SYSTEMATICAL DESCRIPTION The artificial classification (Potonié 1970) Anteturma: Proximegerminantes Turma: Triletes Subturma: Azonotriletes Infraturma: Apiculati Subinfraturma: Verrucati Genus: Cabochonicus Batten et Ferguson 1987 Cabochonicus carbunculus Batten et Ferguson 1987 Description: Trilete, rounded triangular megaspore, 400-500 urn in diameter. The surface is ornamented by 10-20 urn large Verrucae and gemmae. At the proximal side the surface is smooth around the trilete mark. Fig. 1. The Upper Cretaceous coal areas near Ajka. (1) = extension of the Ajka Coal Formation, (2) = Ajka mine area, (3) = boreholes. Studia bot. hung. 30-31, J 999-2000