Also known as Morondava Basin
Where: Tulear, Madagascar (23.5° S, 45.1° E: paleocoordinates 52.9° S, 26.5° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Lower Sakamena Formation (Sakamena Group), Lopingian (259.9 - 252.2 Ma)
• "Locally, the top of the Permian has been recognized by a prominent nodular layer, above which the nature of the sedimentary record is indicative of the Middle Sacamena Formation, dated throughout the island as Lower Triassic. According to Germain, the aquatic reptiles come from just below this horizon. The spore and pollen flora confirms the Upper Permian age for the beds containing the fossil reptiles." (Carroll, 1981 p. 338)
• member-level stratigraphic resolution
Environment/lithology: paralic; coarse-grained, micaceous, quartzose sandstone
•"There is no evidence of the environment having been anaerobic [...] " (ibidem, p. 339)
•of granites such as the crystalline massif that makes up the core of the island. Garnet, zircon, tourmaline and one collophane grain were observed."
Size class: macrofossils
Collected by J. Colcanap, J. Piveteau in 1909, 1925
Primary reference: R. L. Carroll. 1981. Plesiosaur Ancestors from the Upper Permian of Madagascar. Philosophical Transactions of the Royal Society of London B 293(1066):315-383 [J. Mueller/T. Liebrecht/T. Liebrecht]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 85506: authorized by Johannes Mueller, entered by Torsten Liebrecht on 05.01.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Claudiosaurus germaini Carroll 1981 diapsid MNHN (PM) 1909-3-13, 1909-3-25, 1909-3-37, 1909-3-43, 1925-5-85, 1925-5-90, 1925-5-102, 1925-5-111, 1925-5-120; includes elements that were formerly identified as Tangasaurus
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Osteichthyes | |
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