Two new fossil dragonfly species (Insecta: Odonata: Pananisoptera: Aeschnidiidae and Aktassiidae) from the Solnhofen lithographic limestones (Upper Jurassic, Germany). Stuttgarter Beitraege zur Naturkunde Serie B (Geologie und Palaeontologie), 288 2000: 1-9. 2 [Zoological Record Volume 137]