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  1. By: Radchenko, Alexander - Perkovsky, Evgeny E. - Vasilenko, Dmitry
    Type: Article
    In: Journal of Hymenoptera Research
    Volume: 82
    Date: 2021
    Page Range: 237--251
    Publication Info: Pensoft Publishers 2021
    Subjects: European ambers  Formica ribbeckei  new species  Paleontology  syninclusions  taxonomy
  2. By: Simutnik, Serguei - Perkovsky, Evgeny E. - Vasilenko, Dmitry
    Type: Article
    In: Journal of Hymenoptera Research
    Volume: 91
    Date: 2022
    Page Range: 1--9
    Publication Info: Pensoft Publishers 2022
    Subjects: cerci  Diptera  Eocene  filum spinosum  hypopygium  syninclusions