Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 88. (Budapest 1996)

Bajzáth, J.: Plant macrofossils from Hungarian Pleistocene II. Angiospermatophyta in Győrújfalu, West Hungary

Table 1. The seed-flora is characterized by the relative frequency of taxa taxa frequency taxa frequency Alisma plantago-aquatica 3 Oenanthe aquatica 5 Alnus sp. 1 Picea abies 5 Butomus umbellatus 2 Pinus sylvestris 5 Carex aquatilis 1 Polygonum lapathifolium 1 Carex caespitosa I Potamogeton gramineus 3 Carex elata 5 Potamogeton perfoliatus 5 Carex elongata 3 Ranunculus aquatilis 2 Carex gracilis 1 Ranunculus fluitans 1 Carex nigra 1 Ranunculus lingua 5 Carex pseudocyperus 2 Ranunculus nemorosus 1 Carex riparia 2 Ranunculus trichophyllus 1 Carex rost rata 1 Sagittaria sagittijblia 1 Carex sp. 3 Schoenoplectus lacustris 1 Carpinus betulus 1 Schoenoplectus tabernaemontani 2 Chara sp. 2 Scirpus sp. 3 Hippuris vulgaris 1 Scirpus sylvaticus 2 Hydrocharis morsus-ranae 1 Sparganium emersum 2 Lemna trisulca 1 Stachys palustris 4 Myriophyllum verticilla turn 4 Stratiotes aloides 3 Najas tenuissima 1 Thalictrum fiavum 1 Nitellopsis obtusa 5 Typha cf. latifolia 1 time and one area. If these fossils were associated in time, it is possible that they were also associated in space as communities (BIRKS & BIRKS 1980). The reconstruction uses indicator species approach based on the assumption that the ecological requirements and tolerance of the taxa have not changed significantly in time. If groups of taxa occur in the same way together either in the past or in the present our statement seems to be affirmed (BIRKS & BIRKS 1980). The fossil material (vertebrates, molluscs and plants) from the washing residue of the clay boulders indicates the environment around the Danube. Among the molluscs there are mainly aquatic and wetland species. Several species must have lived in alluvial forest. There are only few xerotherm elements of the fauna. These statements correspond to the results of my investigation based on the plant communities. These species and communities show the past vegetation which existed along the catchment area of the Danube. The origin of the tree trunks and the cones are very doubtful. I suppose this fossil material is mainly driftwood and maybe younger than the angiosperms.