• Bathonian is at the first appearance of ammonite species Parkinsonia (Gonolkites) convergens in the stratigraphic column. The global reference profile...
    8 KB (608 words) - 09:41, 27 June 2023
  • Thumbnail for Jurassic
    base of the Bathonian is defined by the first appearance of the ammonite Gonolkites convergens, at the base of the Zigzagiceras zigzag ammonite zone. The...
    231 KB (24,898 words) - 17:27, 30 August 2024
  • Lower GSSP ratified 1996 Upper boundary definition FAD of the Ammonite Gonolkites convergen Upper boundary GSSP Ravin du Bès, Bas-Auran, Alpes de Haute...
    7 KB (478 words) - 09:21, 27 June 2023
  • Bès, Bas-Auran, Alpes de Haute, France Biologic: First appearance of Gonolkites convergen (Ammonite). 43°57′38″N 6°18′55″E / 43.9606°N 6.3153°E / 43...
    93 KB (3,982 words) - 14:15, 3 August 2024
  • Thumbnail for List of ammonite genera
    Goniocyclus Gonioglyphioceras Gonioloboceras Gonioloboceratoides Gonionotites Gonolkites Goodhallites Gracilisphinctes Gracilites Grambergia Grammoceras Grandidiericeras...
    65 KB (2,780 words) - 20:33, 4 September 2024