Cass Morrison
@cretaceous-cass.bsky.social
PhD Student in Palaeoecology of dinosaurs, Palaeoneurology of Theropods dinosaurs, Palaeoecosystem-dynamicist at UCL and NHM, Advocate for Equality, Diversity and Inclusion
Pinned
I am very pleased to announce that my first scientific paper & first author paper, has just been published !
Rise of the King: Gondwanan Origins and Evolution of Megaraptoran Dinosaurs
royalsocietypublishing.org/doi/10.1098/...
Rise of the King: Gondwanan Origins and Evolution of Megaraptoran Dinosaurs
royalsocietypublishing.org/doi/10.1098/...
Reposted by Cass Morrison
I'd be delighted to sponsor a NASA Postdoc Fellowship focused on #biosignatures, #astrobiology, or the Origin of Life here at Hopkins! 🚀
August 3, 2025 at 9:37 PM
I'd be delighted to sponsor a NASA Postdoc Fellowship focused on #biosignatures, #astrobiology, or the Origin of Life here at Hopkins! 🚀
Reposted by Cass Morrison
Could T. rex swim? Kinda
Evidence suggests dinosaurs like tyrannosaurs were probably best suited to a version of the doggy paddle
With Cassius Morrison (@cretaceous-cass.bsky.social)
www.nationalgeographic.com/science/arti...
Evidence suggests dinosaurs like tyrannosaurs were probably best suited to a version of the doggy paddle
With Cassius Morrison (@cretaceous-cass.bsky.social)
www.nationalgeographic.com/science/arti...
Could T. rex swim? Kinda
Evidence suggests dinosaurs like tyrannosaurs were probably best suited to a version of the doggy paddle.
www.nationalgeographic.com
July 3, 2025 at 10:18 PM
Could T. rex swim? Kinda
Evidence suggests dinosaurs like tyrannosaurs were probably best suited to a version of the doggy paddle
With Cassius Morrison (@cretaceous-cass.bsky.social)
www.nationalgeographic.com/science/arti...
Evidence suggests dinosaurs like tyrannosaurs were probably best suited to a version of the doggy paddle
With Cassius Morrison (@cretaceous-cass.bsky.social)
www.nationalgeographic.com/science/arti...
Reposted by Cass Morrison
Reposted by Cass Morrison
And is firmly in 'Camp Tyrannosauroidea' for megaraptorans, finding them to be early-diverging within the clade (as per Aranciaga Rolando et al. 2022), not 'mid-grade' as per my 2022 work. It also supports Laurasian (maybe Asian) origins followed by Gondwanan dispersal... 5/n
May 7, 2025 at 3:30 PM
And is firmly in 'Camp Tyrannosauroidea' for megaraptorans, finding them to be early-diverging within the clade (as per Aranciaga Rolando et al. 2022), not 'mid-grade' as per my 2022 work. It also supports Laurasian (maybe Asian) origins followed by Gondwanan dispersal... 5/n
Reposted by Cass Morrison
Lots to think about, making this such an exciting group for hypotheses about theropod evolution in general. The paper is accompanied by this exciting piece of art, credit to Pedro Salas/Sergey Krasovskiy. 6/end #dinosaurs #theropods
May 7, 2025 at 3:31 PM
Lots to think about, making this such an exciting group for hypotheses about theropod evolution in general. The paper is accompanied by this exciting piece of art, credit to Pedro Salas/Sergey Krasovskiy. 6/end #dinosaurs #theropods
Reposted by Cass Morrison
Today sees the publication of an exciting new study on megaraptoran evolution by Morrison et al. @cretaceous-cass.bsky.social in R Soc Open Sci that seeks to clarify patterns and biogeography. It's OA and here .... royalsocietypublishing.org/doi/10.1098/... 4/n #dinosaurs #theropods
Rise of the king: Gondwanan origins and evolution of megaraptoran dinosaurs | Royal Society Open Science
Late Cretaceous Earth was dominated by theropods such as tyrannosauroids and megaraptorans; however, it is unclear how these clades diversified and grew to massive proportions. This study aimed to conduct a biogeographical analysis and test climate as a ...
royalsocietypublishing.org
May 7, 2025 at 3:29 PM
Today sees the publication of an exciting new study on megaraptoran evolution by Morrison et al. @cretaceous-cass.bsky.social in R Soc Open Sci that seeks to clarify patterns and biogeography. It's OA and here .... royalsocietypublishing.org/doi/10.1098/... 4/n #dinosaurs #theropods
Reposted by Cass Morrison
C. Morrison et al. (2025)
Rise of the king: Gondwanan origins and evolution of megaraptoran dinosaurs
Royal Society Open Science 12(5): 242238
doi: doi.org/10.1098/rsos...
royalsocietypublishing.org/doi/10.1098/...
Rise of the king: Gondwanan origins and evolution of megaraptoran dinosaurs
Royal Society Open Science 12(5): 242238
doi: doi.org/10.1098/rsos...
royalsocietypublishing.org/doi/10.1098/...
Rise of the king: Gondwanan origins and evolution of megaraptoran dinosaurs | Royal Society Open Science
Late Cretaceous Earth was dominated by theropods such as tyrannosauroids and megaraptorans;
however, it is unclear how these clades diversified and grew to massive proportions.
This study aimed to con...
doi.org
May 7, 2025 at 12:21 PM
C. Morrison et al. (2025)
Rise of the king: Gondwanan origins and evolution of megaraptoran dinosaurs
Royal Society Open Science 12(5): 242238
doi: doi.org/10.1098/rsos...
royalsocietypublishing.org/doi/10.1098/...
Rise of the king: Gondwanan origins and evolution of megaraptoran dinosaurs
Royal Society Open Science 12(5): 242238
doi: doi.org/10.1098/rsos...
royalsocietypublishing.org/doi/10.1098/...
Reposted by Cass Morrison
Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, finds a new study by an international team led by PhD researcher @cretaceous-cass.bsky.social @es-ucl.bsky.social @uclmaps.bsky.social
T. rex’s direct ancestor crossed from Asia to North America
Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study led by UCL...
www.ucl.ac.uk
May 7, 2025 at 10:29 AM
Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, finds a new study by an international team led by PhD researcher @cretaceous-cass.bsky.social @es-ucl.bsky.social @uclmaps.bsky.social
Reposted by Cass Morrison
Reminder for those attending #DinoCon 2025 (University of Exeter, August 16th-17th): our accommodation of choice is the university's Holland Hall. Don't leave booking to too late! There's an FAQ at our website: www.dinocon.co.uk/venue and be sure to follow @dinoconuk.bsky.social for news :)
Venue — DinoCon
www.dinocon.co.uk
May 7, 2025 at 8:35 AM
Reminder for those attending #DinoCon 2025 (University of Exeter, August 16th-17th): our accommodation of choice is the university's Holland Hall. Don't leave booking to too late! There's an FAQ at our website: www.dinocon.co.uk/venue and be sure to follow @dinoconuk.bsky.social for news :)
Reposted by Cass Morrison
"Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study led by UCL researchers." 🦖
www.eurekalert.org/news-release...
(Art: Pedro Salas, Sergey Krasovskiy)
www.eurekalert.org/news-release...
(Art: Pedro Salas, Sergey Krasovskiy)
May 7, 2025 at 12:15 AM
"Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study led by UCL researchers." 🦖
www.eurekalert.org/news-release...
(Art: Pedro Salas, Sergey Krasovskiy)
www.eurekalert.org/news-release...
(Art: Pedro Salas, Sergey Krasovskiy)
I am very pleased to announce that my first scientific paper & first author paper, has just been published !
Rise of the King: Gondwanan Origins and Evolution of Megaraptoran Dinosaurs
royalsocietypublishing.org/doi/10.1098/...
Rise of the King: Gondwanan Origins and Evolution of Megaraptoran Dinosaurs
royalsocietypublishing.org/doi/10.1098/...
May 7, 2025 at 7:33 AM
I am very pleased to announce that my first scientific paper & first author paper, has just been published !
Rise of the King: Gondwanan Origins and Evolution of Megaraptoran Dinosaurs
royalsocietypublishing.org/doi/10.1098/...
Rise of the King: Gondwanan Origins and Evolution of Megaraptoran Dinosaurs
royalsocietypublishing.org/doi/10.1098/...
Reposted by Cass Morrison
"Two major faunal turnovers particularly influenced Hemiptera diversification: (i) the aftermath of the Permo-Triassic mass extinction and (ii) the Angiosperm Terrestrial Revolution."
www.nature.com/articles/s42...
🧪 #Paleobio ⚒️ #Geology #EvoBio
www.nature.com/articles/s42...
🧪 #Paleobio ⚒️ #Geology #EvoBio
March 9, 2025 at 8:38 PM
"Two major faunal turnovers particularly influenced Hemiptera diversification: (i) the aftermath of the Permo-Triassic mass extinction and (ii) the Angiosperm Terrestrial Revolution."
www.nature.com/articles/s42...
🧪 #Paleobio ⚒️ #Geology #EvoBio
www.nature.com/articles/s42...
🧪 #Paleobio ⚒️ #Geology #EvoBio
Reposted by Cass Morrison
🦎Threordatoth chasmatos🦎 a new Late Triassic procolophonid in Papers in Palaeontology with @richardjbutler.bsky.social @marcehjones.bsky.social and Nick Fraser showing unique features of the jaw and teeth 🦷🦷https://doi.org/10.1002/spp2.1605 Reconstruction by @markwitton.bsky.social 1/4 #fossilfriday
December 6, 2024 at 12:49 PM
🦎Threordatoth chasmatos🦎 a new Late Triassic procolophonid in Papers in Palaeontology with @richardjbutler.bsky.social @marcehjones.bsky.social and Nick Fraser showing unique features of the jaw and teeth 🦷🦷https://doi.org/10.1002/spp2.1605 Reconstruction by @markwitton.bsky.social 1/4 #fossilfriday
Reposted by Cass Morrison
Barker 2024 Theropod dinosaur diversity of the lower English Wealden: analysis of a tooth‐based fauna from the Wadhurst Clay Formation (Lower Cretaceous: Valanginian) via phylogenetic, discriminant and machine learning methods. Papers in Palaeontology
onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com/doi/10.1002/...
Theropod dinosaur diversity of the lower English Wealden: analysis of a tooth‐based fauna from the Wadhurst Clay Formation (Lower Cretaceous: Valanginian) via phylogenetic, discriminant and machine learning methods
The Lower Cretaceous Wealden Supergroup of southern England yields a diverse assemblage of theropod dinosaurs, its taxa being represented by fragments in addition to some of the most informative asso...
onlinelibrary.wiley.com
December 5, 2024 at 2:05 PM
Barker 2024 Theropod dinosaur diversity of the lower English Wealden: analysis of a tooth‐based fauna from the Wadhurst Clay Formation (Lower Cretaceous: Valanginian) via phylogenetic, discriminant and machine learning methods. Papers in Palaeontology
onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com/doi/10.1002/...
Reposted by Cass Morrison
📢There's still time to nominate for the Marsh #Palaeoart Award! It recognises talent in depicting the extinct fossil faunas of the British Isles. This year's guest judge is the amazing @bobnichollsart.bsky.social
Closing date 25th Nov. Full details: palaeosoc.org/grants-prize... #paleoart
Closing date 25th Nov. Full details: palaeosoc.org/grants-prize... #paleoart
November 20, 2024 at 5:07 PM
📢There's still time to nominate for the Marsh #Palaeoart Award! It recognises talent in depicting the extinct fossil faunas of the British Isles. This year's guest judge is the amazing @bobnichollsart.bsky.social
Closing date 25th Nov. Full details: palaeosoc.org/grants-prize... #paleoart
Closing date 25th Nov. Full details: palaeosoc.org/grants-prize... #paleoart
Reposted by Cass Morrison
Here we are on BlueSky! 🙂
We've been around for over 170 years, our monographs incl. Charles #Darwin's fossil #barnacles, & Richard Owen's early descriptions of #dinosaurs. We also support research & outreach. Follow us for #fossils, funding opportunities, & posts from the palaeontology community.
We've been around for over 170 years, our monographs incl. Charles #Darwin's fossil #barnacles, & Richard Owen's early descriptions of #dinosaurs. We also support research & outreach. Follow us for #fossils, funding opportunities, & posts from the palaeontology community.
November 20, 2024 at 4:56 PM
Here we are on BlueSky! 🙂
We've been around for over 170 years, our monographs incl. Charles #Darwin's fossil #barnacles, & Richard Owen's early descriptions of #dinosaurs. We also support research & outreach. Follow us for #fossils, funding opportunities, & posts from the palaeontology community.
We've been around for over 170 years, our monographs incl. Charles #Darwin's fossil #barnacles, & Richard Owen's early descriptions of #dinosaurs. We also support research & outreach. Follow us for #fossils, funding opportunities, & posts from the palaeontology community.
An upcoming conference talk, I will be presenting in December 2024!!!!
November 20, 2024 at 2:21 PM
An upcoming conference talk, I will be presenting in December 2024!!!!