K.Kubo
@kkubo.bsky.social
JSPS Postdoctoral fellow, Paleontologist, Ph.D. (Science) /Vertebrate palaeontology🦖/ EvoDevo🐣/Univ. of Tokyo 学振PD/博士(理学)/ 東京大学で、恐竜などを対象に古脊椎動物学と進化発生学的アプローチから研究しています。 https://kohta-kubo.webnode.jp/
explanatory power of energetic fitness models across living amniotes and extinct non-avian dinosaurs academic.oup.com/evolut/artic...
The explanatory power of energetic fitness models across living amniotes and extinct non-avian dinosaurs
Abstract. Vertebrates have varied body size distributions. Among these, non-avian dinosaurs have uniquely large minimum and maximum sizes, but the reasons
academic.oup.com
Were there tiny dinosaurs? New study explores one of evolution’s biggest mysteries | EurekAlert! www.eurekalert.org/news-release...
Were there tiny dinosaurs? New study explores one of evolution’s biggest mysteries
Dinosaurs are famous for being big, from the towering Tyrannosaurus rex to the colossal Apatosaurus. But a new study suggests that one of the greatest mysteries of dinosaur evolution isn’t ...
eurekalert.org
マイケル・ベントン『古脊椎動物学』の邦訳が3分冊で刊行予定です。 asakura.co.jp/detail.php?b... 私は恐竜の章を担当させていただきました。 The Japanese edition of Michael Benton’s Vertebrate Palaeontology will soon be published in three volumes! I was responsible for translating the chapter on Dinosaurs 🦖 🦕
ベントン 古脊椎動物学 I ｜朝倉書店
定評あるVERTEBRATE PALAEONTOLOGY 5th ed.を3分冊で全訳．オールカラー．最新の古生物学・進化発生学の知見を取り入れ，脊椎動物の進化史の全体像を把握．第I巻では起源からペルム紀-三畳紀大量絶滅まで解説．［内容］脊椎動物の誕生／化石脊椎動物の研究法／初期古生代の魚類／初期四肢動物／初期有羊膜類の進化
asakura.co.jp
Cool new undescribed fossils coming from the Shenzhen Natural History Museum. A mass mortality bed of oviraptorids, and two new specimens showing nesting behaviour
Happy to present the latest work from my PhD as an advance article in @journal-evo.bsky.social today! David Evans and I present an analysis of feeding mechanics in an ontogenetic series of the hadrosaurid Corythosaurus, the first of its kind in dinosaurs. A thread [1/12] doi.org/10.1093/evol...
Ontogenetic changes in the cranial biomechanics of a crested hadrosaurid dinosaur
Abstract. Mesozoic ecosystems differed from the present in the abundance of large-bodied herbivores that grew through several feeding envelopes, raising th
doi.org
A reconstruction of the evolutionary history of passerine body plans over the past ~50 Myr shows rare bursts of phenotypic innovation near the origin of major taxonomic groups that are temporally aligned with periods of increased climatic instability 🧪 www.nature.com/articles/s41...
Rates of passerine body plan evolution in time and space - Nature Ecology & Evolution
A reconstruction of the evolutionary history of passerine body plans over the past ~50 Myr shows rare bursts of phenotypic innovation near the origin of major taxonomic groups that are temporally alig...
nature.com
この動かない指は、かれらの手が何かを掴むためではなく、体重を支える柱として機能していたことを示す 足跡化石の分析からも、かれらが指の力を使わず、肩や肘の運動だけで歩いていたことが裏付けられた 全く異なる種類の恐竜が、同じ筒状の手と動かない指という解決策にたどり着いたこの現象は、収斂進化を物語っている 研究方法が今時当たり前のデジタルではなく、実骨を砂箱の中で関節させて撮影という、アナログな点でもユニーク 論文OA www.tandfonline.com/doi/full/10....
Investigation of finger motion in two quadrupedal dinosaurs: the sauropod Camarasaurus and stegosaur Stegosaurus
The metacarpals of sauropod dinosaurs were arranged to form a tube or semi-tube, and those of stegosaurs were arranged to form a semi-tube. This orientation aimed the fingers toward each other duri...
tandfonline.com
Congrats, wonderful research about stomach evolution along the bird-dinosaur lineage! www.cambridge.org/core/journal...
Gastrolith shape as an indicator of digestive function and its implications for dinosaurian digestive strategies | Paleobiology | Cambridge Core
Gastrolith shape as an indicator of digestive function and its implications for dinosaurian digestive strategies
cambridge.org
New paper from @jakeberv.bsky.social harnesses a massive skeletal measurement dataset for passerines to show nested bursts in phenotypic evolution, many of which appear coincident with intervals of climate instability. www.nature.com/articles/s41...
Internal structure of waterbird limb bones and its relationship to locomotion: anatomypubs.onlinelibrary.wiley.com/doi/full/10.... 🪶🧪 (📷 @segesdimartin.bsky.social & @houssayecnrs.bsky.social)
Found this paper which combines the ideas of non-Euclidean geometry and manifolds, and the macroevolution in phenotype spaces. Truly exciting theoretical read. www.journals.uchicago.edu/doi/full/10.... 🧪 #EvoBio #Paleobio
New review paper with Martín Ezcurra just published in @journalsystpal.bsky.social as part of a special issue! Modern reptiles comprise archosaurs 🐊🦉, lepidosaurs🦎🐍, and turtles🐢, but their origins is murky. Where do turtles fit in, really? And most marine reptiles? Choristoderes? Drepanosaurs? ->
Evolutionary drivers of reproductive output variation among amniotes, and the origins of large offspring in birds royalsocietypublishing.org/rsos/article...
Evolutionary drivers of reproductive output variation among amniotes, and the origins of large offspring in birds
Abstract. Birds and mammals mostly produce clutches with small numbers of large individual offspring compared to non-bird reptiles, including dinosaurs on
royalsocietypublishing.org
Beaks of the Permo‐Triassic: a morpho‐functional analysis at the dawn of a novel structure in tetrapod evolution - Landi - 2026 - Palaeontology - Wiley Online Library onlinelibrary.wiley.com/doi/10.1111/...
Beaks of the Permo‐Triassic: a morpho‐functional analysis at the dawn of a novel structure in tetrapod evolution
The Triassic was a unique time for beak evolution, as seen in a wide diversity of terrestrial tetrapods. Beaks were present in dicynodont synapsid survivors of the Permo-Triassic mass extinction even...
onlinelibrary.wiley.com
Fantastic research led by @lucyroberts.bsky.social examines the evolution of axial skeletal complexity in reptiles. Turns out the textbooks were wrong- highly complex vertebral columns evolve multiple times within amniotes! Roberts, L.E., Head, J.J. Nat Commun (2026). doi.org/10.1038/s414...
Evolution of the reptile spine reveals independent trajectories to axial skeletal complexity in amniotes - Nature Communications
Complex axial skeletal morphology has evolved in mammals and some reptiles. Here the authors combine morphometrics with a maximum likelihood model to find that axial heterogeneity is associated with b...
doi.org
No surprise, but mugger crocodiles gallop & bound on land like other crocodiles do. It's excellent to have these reports of real behaviour with documentation not hearsay. More of this, please. [Until then, reports of bipedal locomotion in crocodiles are as real as Bigfoot.] doi.org/10.33256/hb1...
K.N. Dollman et al. (2026) Synchrotron imaging reveals diversity in archosauromorph growth strategies by the end of the early Triassic iScience 29(6): 116162 doi: doi.org/10.1016/j.is... www.sciencedirect.com/science/arti...
Redirecting
doi.org
Trierarchuncus in Lego form!
The Dinosaur Dave@thedinosaurdave.bsky.social · 2mo agoThe answer for #Guess that #Lego #Fossil is #Trierarchuncus. In 1980, fossils were found that were informally named as the "Hell Creek alvarezsaur" by Hutchinson and Chiappe in 1998. 1/2 @paleontologizing.bsky.social @denverfowler.bsky.social
The concise history of modeling character evolution. Handy timeline. academic.oup.com/sysbio/advan... 🧪 #EvoBio #Paleobio
Exciting work here—rapid, non-destructive high resolution bone histology with synchrotron scanning! www.sciencedirect.com/science/arti...
Synchrotron imaging reveals diversity in archosauromorph growth strategies by the end of the early Triassic
Archosauromorphs are a diverse clade of vertebrates that originated in the Early Triassic and persist today as crown birds (ornithodirans) and crocodi…
sciencedirect.com
エジプト東部砂漠からダニアン期（6220万年前）の現代的な魚類群集化石 白亜紀末から僅か400万年以内に構成的に現代的な海洋魚類群集が確立したことが明らかに 論文OA www.science.org/doi/10.1126/... ニュース phys.org/news/2026-06...
Rise of modern marine fishes captured in an early Paleocene Lagerstätte
Remarkably modern marine fish assemblages were established in the tropics within 4 Myr of the K-Pg extinction.
science.org
CTにより、竜脚類恐竜における尾椎の極端な含気化の複数起源が明らかに 新竜脚類内で少なくとも5回の独立した獲得および/または逆転が見られる 竜脚類における尾椎気腔の発達は、体型や質量の変化に対応せず、むしろ、気腔憩室の日和見的な性質に起因する可能性がある 論文OA onlinelibrary.wiley.com/doi/10.1111/...
Computed tomography reveals multiple origins of extreme caudal vertebral pneumaticity in sauropod dinosaurs
Here, we present novel CT scan data of caudal vertebrae of six Middle–Late Jurassic sauropods, representing several eusauropod lineages. We synthesise these new data with a comprehensive critical app...
onlinelibrary.wiley.com
Are you interested in hearing about progress and challenges in 3D biodiversity imaging and beyond? If so, register to the upcoming National Imaging Facilities event coming up on June 17 (I'm speaking about segmentation using machine learning), see you online? events.humanitix.com/nif-museums-...
NIF Museums Special Interest Group workshop 2026: Progress and challenges in 3D biodiversity imaging and beyond
A workshop convened by the National Imaging Facility Museums Special Interest Group on challenges and successes of 3D biodiversity/museums collection imaging.
events.humanitix.com
Stepwise loss of complexity in #Hagfish eyes prior to deep sea colonisation doi.org/10.1098/rsbl... | #BiologyLetters #Palaeontology
"The phylogenetic origin of turtles" Read more in Current Biology: www.cell.com/current-biol... @semifossorial.bsky.social & colleagues @currentbiology.bsky.social
