Amanzia (after Swiss geologist Amanz Gressly) is a genus of turiasaurian sauropod dinosaur from the Reuchenette Formation in Moutier, Switzerland. The type and only species is Amanzia greppini, originally named as a species of Ornithopsis.[1]

Discovery and naming

The remains were originally discovered in the 1860s, by workers in a limestone quarry in the Basse Montagne. They were sold to collectors; when geologist Jean-Baptiste Greppin heard of this situation, he acquired all remaining bones and added them to the collection of the Naturhistorisches Museum Basel. Due to being found in association with a theropod tooth, they were misidentified as belonging to a predatory dinosaur, for which Greppin in 1870 coined the name "Megalosaurus meriani".[2] In 1920, Werner Janensch reassigned the tooth to the genus Labrosaurus. However, in 1922, Janensch realized the vertebrae belonged to a sauropod, so he wrote to Friedrich von Huene, who gave them the name Ornithopsis greppini.[3] In 1927, von Huene assigned the species to his new genus Cetiosauriscus.[4][5] From then on it has received little attention, with the few papers that mention it usually calling it a nomen dubium without further comment.[1]


  1. 1.0 1.1 (2020) "Re-description of the sauropod dinosaur Amanzia ("Ornithopsis/Cetiosauriscus") greppini n. gen. and other vertebrate remains from the Kimmeridgian (Late Jurassic) Reuchenette Formation of Moutier, Switzerland.". Swiss Journal of Geosciences. DOI:10.1186/s00015-020-00355-5. 
  2. Greppin, J.P. 1870. Description géologique du Jura bernois et de quelques districts adjacents. Matériaux pour la carte géologique de la Suisse, 8: 1–357
  3. Huene, F. von 1922. "Ueber einen Sauropoden im obern Malm des Berner Jura". Eclogae Geologicae Helvetiae, 17: 80–94
  4. Huene, F. von 1927. "Short review of the present knowledge of the Sauropoda". Memoirs of the Queensland Museum: 9: 121–126
  5. Huene, F. von 1927. "Sichtung der Grundlagen der jetzigen Kenntnis der Sauropoden". Eclogae Geologicae Helvetiae, 20: 444–470
Community content is available under CC-BY-SA unless otherwise noted.