Riley Sombathy
@rileysombathy.bsky.social
Evolutionary biologist studying bone histology. PhD Candidate in the O’Connor lab at Ohio University. He/Him.
Reposted by Riley Sombathy
Very excited to share that our latest paper is out in Science! We show that the type specimen of Nanotyrannus—an isolated skull—is fully grown, showing that it is not a juvenile Tyrannosaurus rex but a distinct species (1/12)
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
www.science.org
December 4, 2025 at 7:02 PM
Very excited to share that our latest paper is out in Science! We show that the type specimen of Nanotyrannus—an isolated skull—is fully grown, showing that it is not a juvenile Tyrannosaurus rex but a distinct species (1/12)
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
Reposted by Riley Sombathy
Hi! I'm a palaeontologist who has just joined Bluesky. My lab recently published a paper on gorgonopsian osteohistology.
doi.org/10.1111/joa....
doi.org/10.1111/joa....
The osteohistology of gorgonopsian therapsids and implications for Permo‐Triassic theriodont growth
Permian gorgonopsian therapists had rapid, annually interrupted growth and show longer lifespans than early Triassic therapists.
doi.org
February 5, 2025 at 9:58 AM
Hi! I'm a palaeontologist who has just joined Bluesky. My lab recently published a paper on gorgonopsian osteohistology.
doi.org/10.1111/joa....
doi.org/10.1111/joa....
Reposted by Riley Sombathy
Sombathy, R., O’Connor, P.M. & D’Emic, M.D. (2025) Osteohistology of the unusually fast-growing theropod dinosaur Ceratosaurus. Journal of Anatomy, 00, 1–25. Available from: doi.org/10.1111/joa....
Osteohistology of the unusually fast‐growing theropod dinosaur Ceratosaurus
We report the histology of multiple elements attributed to four individuals of Ceratosaurus. We find that the histology and growth models corroborate previous reports of rapid tissue growth in the ge...
doi.org
February 6, 2025 at 2:22 PM
Sombathy, R., O’Connor, P.M. & D’Emic, M.D. (2025) Osteohistology of the unusually fast-growing theropod dinosaur Ceratosaurus. Journal of Anatomy, 00, 1–25. Available from: doi.org/10.1111/joa....
New paper is out! We investigate how Ceratosaurus, the horned carnivore from the Late Jurassic, grew. Turns out, it grew very very fast, and is reflected in the bone tissue. Thanks to everyone involved, esp. my advisors Pat and Mike!!
Give us a read at onlinelibrary.wiley.com/doi/10.1111/...
Give us a read at onlinelibrary.wiley.com/doi/10.1111/...
February 6, 2025 at 2:50 PM
New paper is out! We investigate how Ceratosaurus, the horned carnivore from the Late Jurassic, grew. Turns out, it grew very very fast, and is reflected in the bone tissue. Thanks to everyone involved, esp. my advisors Pat and Mike!!
Give us a read at onlinelibrary.wiley.com/doi/10.1111/...
Give us a read at onlinelibrary.wiley.com/doi/10.1111/...