Fossil wood from the Doupovské hory and České středohoří volcanic complexes: Latest overview and new angiosperms from the locality Dvérce
Abstrakt
Since 1855, 25 different fossil wood types belonging to conifers (Cupressaceae s.l. with two different types of Taxodioxylon gypsaceum: root- and stem-wood), and angiosperms (families Magnoliaceae, Lauraceae, Platanaceae, Altingiaceae, Cercidiphyllaceae, Ulmaceae, ?Moraceae, Juglandaceae, Betulaceae, Malvaceae s.l., Sapotaceae, Oleaceae, one palm stem, and two types of angiosperms without closer determination) were described so far from 13 localities in the Doupovské hory and České středohoří Mts. New fossil woods are described from the Dvérce locality in south-eastern part of the Doupovské hory Mts., i.e., one conifer (Cupressaceae s.1.) and four types of angiosperms (Platanaceae, Ulmaceae, Juglandaceae, and Oleaceae).
The co-occurrence of juglandaceous fossil wood remnant with Carya nuts allows the application of the whole-plant concept and the combination of Carya quadrangula and Eucaryoxylon crystallophorum into one botanical species. Occurrences of the fossil plant remnants are associated with freshwater limestones, interpreted here as travertines.
The travertines made lenticular accumulations in the pyroclastic deposits of the Doupovské hory volcanix complex.