Acerosodontosaurus
| Acerosodontosaurus Temporal range: Late Permian
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Family: | †Tangasauridae |
| Genus: | †Acerosodontosaurus Currie 1980 |
| Type species | |
| †Acerosodontosaurus piveteaui | |
Acerosodontosaurus is a younginiform diapsid that lived during the Upper Permian of Madagascar.[1]
Biology
It is known from a single skeleton including a crushed skull and part of the body and limbs from an immature specimen. In life, the animal measured about 60–70 cm in length and had a lizard-like appearance. The fossil has been discovered in marine deposits indicating that the animal might have been aquatic.
Phylogeny
Acerosodontosaurus was originally assigned to Younginidae in the original description,[2] but was later assigned to Tangasauridae.[3] The 2018 cladistic analysis of the stem-turtle Eorhynchochelys recovers it as a close relative of the testudinatans Eunotosaurus, Pappochelys,and Eorhynchochelys.[4]
References
- ^ Currie, Philip J. (1980). "A new younginid (Reptilia: Eosuchia) from the Upper Permian of Madagascar". Canadian Journal of Earth Sciences. 17 (4): 500–511. doi:10.1139/e80-046.
{{cite journal}}: Invalid|ref=harv(help) - ^ P. J. Currie. 1980. A new younginid (Reptilia: Eosuchia) from the Upper Permian of Madagascar. Canadian Journal of Earth Sciences 17(4):500-511.
- ^ C. Bickelmann, J. Müller, and R. R. Reisz. 2009. The enigmatic diapsid Acerosodontosaurus piveteaui (Reptilia: Neodiapsida) from the Upper Permian of Madagascar and the paraphyly of ‘‘younginiform’’ reptiles. Canadian Journal of Earth Sciences 46(9):651-661
- ^ Chun Li; Nicholas C. Fraser; Olivier Rieppel; Xiao-Chun Wu (2018). "A Triassic stem turtle with an edentulous beak". Nature. 560 (7719): 476–479. doi:10.1038/s41586-018-0419-1.
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