Bambiraptor enters the LRT, a late survivor of an earlier genesis

Short one today,
both in text length and taxon height.

Figure 1. Bambiraptor figures from Burnham et al. 2000. Colors added.

Figure 1. Bambiraptor figures from Burnham et al. 2000. Colors added.

Bambiraptor feinbergi (Burnham et al. 2000; Late Cretaceous, AMNH FR 30556) was originally considered a juvenile Sauronitholestes. The brain size is the largest among Mesozoic dinosaurs. Here it nests basal to Velociraptor + Balaur in the large reptile tree (LRT, 1724+ taxa, subset Fig. x). Proportions are closer to Arachaeopteryx according to the authors.

Figure 2. Bambiraptor to scale compared to Velociraptor, Balaur, Hapolcheirus, Archaeopteryx and Gallus.

Figure 2. Bambiraptor to scale compared to Velociraptor, Balaur, Hapolcheirus, Archaeopteryx and Gallus.

Figure 3. Subset of the LRT focusing on theropods leading to birds, including the two newest additions, Bambiraptor and Zanazabar.

Figure 3. Subset of the LRT focusing on theropods leading to birds, including the two newest additions, Bambiraptor and Zanazabar.

We’ll look
at Zanazabar soon.


References
Burnham DA, Derstler KL, Currie PJ, Bakker RT, Zhou Z and Ostrom J H 2000. Remarkable new birdlike dinosaur (Theropoda: Maniraptora) from the Upper Cretaceous of Montana. University of Kansas Paleontological Contributions 13: 1-14.

https://en.wikipedia.org/wiki/Bambiraptor

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