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Aardonyx (basal sauropodomorph) enters the LRT

Saturday, November 21, 2020 13:25

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Aardonyx celestae
(Yates et al. 2010; Fig. 1) was originally considered a basal sauropodomodph dinosaur, because it is one.

Figure 1. Aardonyx from Yates et al. 20109. Colors added.

In the large reptile tree (LRT, 1760+ taxa; subset Fig. 2) Early Jurassic Aardonyx nests with the Late Jurassic prosauropod, Saturnalia, a taxon not mentioned in the Yates et al. paper. Aardonyx is larger, more robust and has shorter feet, as in sauropods, making it a sauropod mimic.. so, not in the lineage of sauropods. That should be relatively uncontroversial.

Figure 2. Subset of the LRT focusing on basal phytodinosauria. Aardonyx nests with Saturnalia here.

References
Yates AM, Bonnan MF, Neveling J, Chinsamy A and Blackbeard MG 2010. A new transitional sauropodomorph dinosaur from the Early Jurassic of South Africa and the evolution of sauropod feeding and quadrupedalism. Proceedings of the Royal Society B. 277(1682): 787–794.

wiki/Saturnalia
wiki/Aardonyx

Source: https://pterosaurheresies.wordpress.com/2020/11/22/aardonyx-basal-sauropodomorph-enters-the-lrt/

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