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New Information on the Madagascan Middle Jurassic Sauropod Lapparentosaurus madagascariensis

Faculty of Sciences, University of Antananarivo, 101 Antananarivo, Madagascar
The Hunterian, University of Glasgow, University Avenue, Glasgow, Scotland G12 8QQ, UK
Author to whom correspondence should be addressed.
Geosciences 2019, 9(12), 498;
Received: 20 August 2019 / Revised: 9 October 2019 / Accepted: 22 October 2019 / Published: 27 November 2019
The systematic position of the Middle Jurassic sauropod Lapparentosaurus madagascariensis is not fully understood due to a lack of useful anatomical detail. Despite many new bone fragments from the axial skeleton, post-cranial skeleton, and a hind limb having been previously unearthed, its systematic position has not yet been satisfactorily established. Although this Malagasy taxon is only recognised by two autapomorphies located in the scapula and coracoid, two features of the neural spine, which are reported here, provide additional information on the common autapomorphies shared with the British genus Cetiosaurus. A full description of the femur and neural spine helps to determine some aspects of its relationship to other similar taxa. Remains of Lapparentosaurus madagascariensis have been recovered from mixed facies that may have been deposited in a shallow water lagoon during a transgressive period in the Isallo IIIb subunit in the Majunga Basin. View Full-Text
Keywords: autapomorphy; Cetiosauridae; Brachiosauridae; Bathonian; Isalo; Majunga autapomorphy; Cetiosauridae; Brachiosauridae; Bathonian; Isalo; Majunga
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Raveloson, M.L.T.; Clark, N.D.L.; Rasoamiaramana, A.H. New Information on the Madagascan Middle Jurassic Sauropod Lapparentosaurus madagascariensis. Geosciences 2019, 9, 498.

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