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.
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". 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. In 1927, von Huene assigned the species to his new genus Cetiosauriscus. From then on it has received little attention, with the few papers that mention it usually calling it a nomen dubium without further comment.
- (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.
- 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
- Huene, F. von 1922. "Ueber einen Sauropoden im obern Malm des Berner Jura". Eclogae Geologicae Helvetiae, 17: 80–94
- Huene, F. von 1927. "Short review of the present knowledge of the Sauropoda". Memoirs of the Queensland Museum: 9: 121–126
- Huene, F. von 1927. "Sichtung der Grundlagen der jetzigen Kenntnis der Sauropoden". Eclogae Geologicae Helvetiae, 20: 444–470