The diploma thesis presents an overview of the extinct representatives of Blattidae, the still living cockroach family. Six already described species, belonging to three genera, have been confirmed. All of them lived during Cenozoic. Eight new morphotypes from Myanmar amber were recognized. Cenomanian Burmite with its exceptional state of preservation, allows a detailed study of the morphology of the inclusions. Six morphototypes belong to the family Blattidae. One morphotype belongs to the derived family Olidae studied herein. One female morphotype belongs to the still living family Ectobiidae, based on the presence of an attached ootheca. The work specifies the previous molecular analysis (J2-K1) and determines the divergence of Blattidae during Early Cretaceous. Any evidence and interpolations before 127Ma is not substantiated. Phylogenetic analysis confirmed Blattidae being parafyletic in respect to the family Olidae. The work emphasizes the need for changes in systematics of the Mesoblattinidae, the stem of the Blattidae. Amber is confirmed as the product of coniferous trees of the Araucariaceae family. Key words: Blattidae, taxonomy, phylogeny, Cenomanian, Myanmar amber

The diploma thesis presents an overview of the extinct representatives of Blattidae, the still living cockroach family. Six already described species, belonging to three genera, have been confirmed. All of them lived during Cenozoic. Eight new morphotypes from Myanmar amber were recognized. Cenomanian Burmite with its exceptional state of preservation, allows a detailed study of the morphology of the inclusions. Six morphototypes belong to the family Blattidae. One morphotype belongs to the derived family Olidae studied herein. One female morphotype belongs to the still living family Ectobiidae, based on the presence of an attached ootheca. The work specifies the previous molecular analysis (J2-K1) and determines the divergence of Blattidae during Early Cretaceous. Any evidence and interpolations before 127Ma is not substantiated. Phylogenetic analysis confirmed Blattidae being parafyletic in respect to the family Olidae. The work emphasizes the need for changes in systematics of the Mesoblattinidae, the stem of the Blattidae. Amber is confirmed as the product of coniferous trees of the Araucariaceae family. Key words: Blattidae, taxonomy, phylogeny, Cenomanian, Myanmar amber