Record details

    Bayeritheca hughesii gen. et sp. nov., a new Eucommiidites-bearing pollen organ from the Cenomanian of Bohemia
Statement of responsibility
    Jiří Kvaček, Blanka Pacltová
    Kvaček, Jiří, 1937-
    Pacltová, Blanka
Source title - serial
    Cretaceous research
    Vol. 22, no. 6
    p. 695-704
    3 obr., 4 fot., 26 bibl.
    Zkr. název ser.: Cretaceous Res.
Subject group
    česká křídová pánev
    flóra - nález fertilní
    nový taxon
    paleontologická rekonstrukce
    pylová zrna
    ultrastruktura biologická
Geographical name
    Břežany II (Kolín)
Abstract (in english)
   A new pollen organ, Bayeritheca hughesii gen. et sp. nov. with in situ Eucommiidites pollen grains, is described from the Cenomanian of Bohemia in Central Europe. It is based on a single lignified specimen which is the larest Eucommiidites-producing pollen structure described so farr. It shows whorls of microsporangiate units attached to a massif main axis forming a cone-like structure. Each microsporangiate unit forms distally an angular head bearing trichomes and centrally arranged mucronate tubercles. The head is attached to a short stalk. Proximal sides of heads display radiate arranged synangia. Each synangium contains an unknown number of pollen sacs with numerous Eucommiidites pollen grains Bayeritheca is the only genus of Erdtmanithecales in which synangia instead of sporangia are found. Bayeritheca differs from Eucommiiditheca Friis a Pedersen in the whorled arrangement of microsporangiate units, which are densely spaced forming a cone-like structure.
   It differes from Erdtmanitheca Pedersen, Crane a Friis in the elongate shape of the whole organ, slende main axis, shorter pollen sacs, and different Eucommiidites pollen
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    31. 8. 2007
Import date
    8. 8. 2012