Allosaurus fragilisPaleoJoe on DeviantArthttps://www.deviantart.com/paleojoe/art/Allosaurus-fragilis-963204547PaleoJoe

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Allosaurus fragilis

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Here is my DINO 2560 Allosaurus fragilis skeletal. This was done for two reasons. I had to make an Allosaurus at some point and secondly that I am in the midst of a long-term project reconstructing Saurophaganax. The more elevated head is based on the alert posture found by Witmer and Ridgely who find that theropods more likely had near horizontal skulls when alert and, as such, skeletals should reflect that. Also, some might notice the scapula + coracoid seem flat. This is because I approximated the perspective that would come from having the arms meet in the middle unlike the strictly lateral/orthographic depiction seen in most skeletals and is closer to what it would’ve been in life. Lastly, the other biggest difference is a shorter tail. Though known from a few caudals, the tail is probably similar in proportion to the complete one of SMA 0005 (Allosaurus jimmadseni) thus bringing down the length overall. This is also a part of a larger project on a synthesis of the chronostratigraphy research currently being done by Maidment et al.

Length (along the centra): 7.54m
Age: Tithonian - between 150.91 and 150.4 mya
Location: Dinosaur National Monument, Utah, USA

References: 

Madsen, J. (1977). A Revised Osteology of Allosaurus fragilis. Bulletin 109, Utah Geological Survey, 4(2), 131-152.

Maidment, Balikova, and Muxworthy. (2017, June 1). Magnetostratigraphy of the upper Jurassic Morrison formation at dinosaur National Monument, Utah, and prospects for using magnetostratigraphy as a correlative tool in the Morrison formation. The University of Brighton. research.brighton.ac.uk/en/pub…

Maidment, Susannah; Muxworthy, A. (2020, April 16). A chronostratigraphic framework for the Upper Jurassic Morrison Formation, western U.S.A. Natural History Museum - Open Repository. nhm.openrepository.com/bitstre…

Witmer, L. M., & Ridgely, R. C. (2009). New insights into the brain, braincase, and ear region of tyrannosaurs (Dinosauria, theropoda), with implications for sensory organization and behavior. The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology, 292(9), 1266-1296. doi.org/10.1002/ar.20983
Image size
7992x3583px 1.57 MB
Date Taken
Jan 28, 2023, 6:36:55 PM
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Comments3
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Stunning!! I’ve always wanted to make a skeletal but i dont know how. Any tips please? Incredible work.