Bechly & Sach 2002. An interesting new fossil dragonfly (Anisoptera: Libellulidae: "Brachydiplacini") from the Miocene of Germany, with a discussion on the phylogeny of Tetrathemistinae and a fossil list for the locality Heggbach. Stuttgarter Beitraege zur Naturkunde Serie B (Geologie und Palaeontologie), 325, 31 Dezember 2002: 1-11