Episode 12 - the Ornithischian Silesaurid Hypothesis (Summer 2026)

Thanks for tuning into the Dinosaurs Lately podcast, the dinosaur podcast that features periodic updates recapping the latest news on the dinosaurs. This is the podcast that targets a type of dinosaur and tries to catch you up on everything that’s been published on them … lately.

The goal is to keep up with all the dinosaurs news, even when I’m not publishing new episodes of the Juras-Sick Park-Cast. If you’re interested in this sort of thing – I hope it helps you feel … up to date.

Episode 12 - The Ornithischian Silesaurid Hypothesis (Summer 2026). 

(stream it here)

Ornithischian Silesaurid Hypothesis news: 

• Baron, M.; Norman, D; & Barrett, P. (2017). A new hypothesis of dinosaur relationships and early dinosaur evolution. Nature 543, pp. 501–506. https://doi.org/10.1038/nature21700. https://www.nature.com/articles/nature21700.
  
  
• Zittel, K. A. von. (1887–1890). Handbuch der Palaeontologie: I. Abtheilung. Palaeozoologie (Band 3: Vertebrata [Pisces, Amphibia, Reptilia, Aves]). R. Oldenbourg. Biodiversity Heritage Library. https://www.biodiversitylibrary.org/item/124860. (Accessed August 22, 2026).
  
  
• Brusatte, S. L., Benton, M. J., Desojo, J. B., & Langer, M. C. (2010). The higher-level phylogeny of Archosauria (Tetrapoda: Diapsida). Journal of Systematic Palaeontology, 8(1), 3–47. https://doi.org/10.1080/14772010903537732. (Accessed August 22, 2026).
  
  
• Gauthier, J. (1986). Saurischian monophyly and the origin of birds. In K. Padian (Ed.), Memoirs of the California Academy of Sciences: The Origin of Birds and the Evolution of Flight (Vol. 8, pp. 26–28, 54). California Academy of Sciences. DOI: https://biostor.org/reference/110202. (Accessed August 22, 2026).
  
  
• Dal Corso, J. (2025). “Carnian Events.” 49. 1-11. https://www.researchgate.net/publication/391653200_Carnian_Events. (Accessed August 8, 2026).
  
  
• Heath, J.A.; Cooper, N.; Upchurch, P.; & Mannion, P.D. (2025). “Accounting for sampling heterogeneity suggests a low paleolatitude origin for dinosaurs Current Biology.” Current Biology 35, 941-953 (2025). Doi: https://doi.org/10.1016/j.cub.2024.12.053. https://www.cell.com/current-biology/fulltext/S0960-9822(24)01722-6.
  
  
• Upchurch, P. (1995). “The Evolutionary History of Sauropod Dinosaurs.” Philosophical Transactions of The Royal Society B Biological Sciences. 349. 10.1098/rstb.1995.0125.
  
  
• Lovegrove, J., Upchurch, P., & Barrett, P. M. (2024). “Untangling the tree or unravelling the consensus? Recent developments in the quest to resolve the broad-scale relationships within Dinosauria.” Journal of Systematic Palaeontology, 22(1). DOI: https://doi.org/10.1080/14772019.2024.2345333.
  
  
• Lovegrove, J; Chapelle, K.E.J.; Peecook, B.R.; Upchurch, P.; & Barrett, P.M. (2025). “A new large ‘silesaur’ specimen from the ?Late Triassic of Zambia; taxonomic, ecological and evolutionary implications.” Royal Society Open Science 12(7): 250762. doi: https://doi.org/10.1098/rsos.250762 https://royalsocietypublishing.org/doi/10.1098/rsos.250762.
  
  
• Müller, R.T. (2026). “Widespread distribution of large silesaurids evidenced by a new record from the Middle Triassic of southwest Gondwana.” The Anatomical Record (January 2026). doi: https://doi.org/10.1002/ar.70190. https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.70190.
  
  
• Dal Corso, J.; Bernardi, M,; Sun, Y.; Song, H.; Seyfullah, L.; Preto, N.; Gianolla, P.; Ruffell, A.; Kustatscher, E.; Roghi, G.; Merico, A.; Hohn, S.; Schmidt, A.; Marzoli, A.; Newton, R.; Wignall, P.; Benton, M. (2020). “Extinction and dawn of the modern world in the Carnian (Late Triassic).” Science Advances. 6. DOI:10.1126/sciadv.aba0099. https://www.researchgate.net/publication/344273252_Extinction_and_dawn_of_the_modern_world_in_the_Carnian_Late_Triassic.
  
  
• Martz, J.W., Small, B.J. (2019). “Non-dinosaurian dinosauromorphs from the Chinle Formation (Upper Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae).” PeerJ. Sep 3;7:e7551. https://pubmed.ncbi.nlm.nih.gov/31534843/. DOI: https://doi.org/10.7717/peerj.7551.
  
  
• Lovelace, D.M., Kufner, A.M., Fitch, A.J., Rogers, K.C., Schmitz, M., Schwartz, D.M., LeClair-Diaz, A., St.Clair, L., Mann, J., Teran, R. (2025). “Rethinking dinosaur origins: oldest known equatorial dinosaur-bearing assemblage (mid-late Carnian Popo Agie FM, Wyoming, USA).” Zoological Journal of the Linnean Society 203(1): zlae153, https://doi.org/10.1093/zoolinnean/zlae153. https://academic.oup.com/zoolinnean/article/203/1/zlae153/7942678.
  
  
• Paes Neto, V.D., Pretto, F.A., Martinelli, A.G., Battista, F., Garcia, M., Müller, R.T., Schmitt, M.R., Melo, T.P., Francischini, H., Schultz, C.L., Pinheiro, F., Soares, M.B., &Kellner, A.W. (2025). “Continuous presence of dinosauromorphs in South America throughout the Middle to the Late Triassic.” Scientific Reports 15: 18498. doi: https://doi.org/10.1038/s41598-025-99362-5. https://www.nature.com/articles/s41598-025-99362-5.
  
  
• Nesbitt, S.J., Langer, M.C. and Ezcurra, M.D. (2020). “The Anatomy of Asilisaurus kongwe, a Dinosauriform from the Lifua Member of the Manda Beds (~Middle Triassic) of Africa.” Anatomical Record, 303: 813-873. https://doi.org/10.1002/ar.24287. https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.24287.
  
  
• Nesbitt, S.J., Sidor, C.A., Irmis, R.B., Angielczyk, K.D., Smith, R.M.H., & Tsuji, L.A., (2010). “Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira.” Nature 464, 95–98 (2010). https://doi.org/10.1038/nature08718. https://www.nature.com/articles/nature08718.
  
  
• Breeden, B.T., Irmis, R.B., Nesbitt, S.J., Smith, N.D., & Turner, A.H. (2025). “New specimens of Eucoelophysis baldwini from the Upper Triassic Chinle Formation, northern New Mexico, U.S.A., and their implications for the evolution of Silesauridae (Dinosauriformes).” Journal of Vertebrate Paleontology e2552170. doi: https://doi.org/10.1080/02724634.2025.2552170. https://www.tandfonline.com/doi/full/10.1080/02724634.2025.2552170.
  
  
• Sullivan, R. M., & Lucas, S. G. (1999). Eucoelophysis baldwini, a new theropod dinosaur from the Upper Triassic of New Mexico, and the status of the original types of Coelophysis. Journal of Vertebrate Paleontology, 19(1), 81–90. DOI: https://doi.org/10.1080/02724634.1999.10011124. https://www.tandfonline.com/doi/epdf/10.1080/02724634.1999.10011124.
  
  
• Maisch, M.W., Maisch, L.S.M., (2024). “Neubewertung von ‘Plateosaurus’ ornatus von Huene, 1908 - ein früher Ornithischier (Dinosauria: Ornithischia) aus dem Rhätbonebed?” Bd. 180 (2024): Jahreshefte der Gesellschaft für Naturkunde in Württemberg [Annual Report of the Society for Natural History in Württemberg] 180: 379–399.
  
  
• Norman, D.B., Baron, M.G., Garcia, M.S., & Müller, R.T. (2024). “The origin and early evolution of the ornithischian bauplan: evaluation and implications for the Dinosauria.” Revue de Paléobiologie 43(1): 61-83 ISSN 0253-6730 https://zenodo.org/records/10732337. https://zenodo.org/records/10732337.
  
  
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Dinosaurs Lately is a companion show to the Juras-Sick Park-Cast, the podcast where guests chat with me about Michael Cricthon’s 1990 novel Jurassic Park, and also not that, too. If you’d like to be a guest on that show, you can reach me at ryansrogers-at-gmail.com. These podcasts are part of the Spring Chickens banner of amateur intellectual properties including the Spring Chickens funny pages, Tomb of the Undead graphic novel, the Second Lapse graphic novelettes, The Infantry, and the worst of it all, the King St. Capers.
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