Naoto Handa 半田直人
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naotohanda.bsky.social
Naoto Handa 半田直人
@naotohanda.bsky.social
94 followers 89 following 14 posts
Paleontologist studying mammal evolution
哺乳類化石を調べてます
https://sites.google.com/site/nhandaswebsite/english
Posts Replies Media Videos
Reposted by Naoto Handa 半田直人
dinopantheon.bsky.social
ストックホルム大学
氷河期のオオカミの胃から回収されたケブカサイのゲノム www.su.se/english/news...
論文OA academic.oup.com/gbe/article/...
Woolly rhino genome recovered from Ice Age wolf stomach - Stockholms universitet
www.su.se
January 16, 2026 at 7:10 AM
Reposted by Naoto Handa 半田直人
zoojlinnsoc.bsky.social
What do you call a reptile that looks like a lizard but isn't? I'm Nothosaurus...

Helping to understand ecosystem recovery after the PT-extinction, a large new nothosaurian is described, adding to the evidence of large predators in the Tethys shallow seas! 🧪👇
doi.org/10.1093/zool...
#FossilFriday
January 16, 2026 at 11:18 AM
Reposted by Naoto Handa 半田直人
manonhullot.bsky.social
A recent study showed that horses appeared later (50 Mya) than what we previously thought (56 Mya) 🐎
Indeed, Hyracotherium (aka Eohippus - dawn horse) and Pliolophus are not horses nor even hippomorphs in this lattest phylogeny 🤯
www.pnas.org/doi/10.1073/...
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
www.pnas.org
January 15, 2026 at 8:52 AM
Reposted by Naoto Handa 半田直人
dinopantheon.bsky.social
Inside the Life of Tyrannosaurus rex: PeerJ & Dr. Holly Woodward Ballard on Growth and Development
ティラノサウルスの成長論文、筆頭著者が解説しています youtu.be/zlmeMc7P4gI?...
Inside the Life of Tyrannosaurus rex: PeerJ & Dr. Holly Woodward Ballard on Growth and Development
YouTube video by PeerJ
youtu.be
January 15, 2026 at 9:03 AM
Reposted by Naoto Handa 半田直人
therhinoscaros.bsky.social
Slow to publicise this but our paper about bioerosive traces in a Late Miocene Bolivian glyptodontid is out, featuring fantastic art by @literallymiguel.bsky.social www.tandfonline.com/doi/full/10....
January 15, 2026 at 10:42 AM
Reposted by Naoto Handa 半田直人
ipc7.bsky.social
🎓 Student Travel Support – IPC7

@PalPSSA is offering travel support for one student member registered at a southern African institution to attend IPC7.

📅 Application deadline: 28 February 2026
📢 Outcome announced: 31 March 2026

👉 More details: www.ipc7.site
January 13, 2026 at 7:52 AM
Reposted by Naoto Handa 半田直人
anatrecord.bsky.social
Excellent write-up in Science by Ann Gibbons of the exciting new Ileret Homo material: ]
www.science.org/content/arti...
Check out the original AR article by Frederick Grine and colleagues here:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 13, 2026 at 2:10 PM
Reposted by Naoto Handa 半田直人
biorxiv-evobio.bsky.social
A phylogenomic framework for avian feather lice (Phthiraptera: Ischnocera) https://www.biorxiv.org/content/10.64898/2026.01.09.698582v1
January 10, 2026 at 5:31 AM
Reposted by Naoto Handa 半田直人
dinopantheon.bsky.social
OIST
魚類の時代は大量絶滅から始まった
新たな化石データベースの構築により、最古の脊椎動物の生態系に関する独自の知見が得られたことで、大量絶滅イベントがいかにして脊椎動物の進化的多様化を促したかを明らかにしました
論文OA www.science.org/doi/10.1126/...
www.oist.jp/ja/news-cent...
Mass extinction triggered the early radiations of jawed vertebrates and their jawless relatives (gnathostomes)
A mass extinction 445 million years ago triggered the rapid rise of armored and jawed vertebrates.
www.science.org
January 10, 2026 at 6:37 AM
Reposted by Naoto Handa 半田直人
xcsci.bsky.social
Muntjakki haluaa tapella ja sarvikuono leikkiä
youtu.be/IpBrqPzyLds?...
Watch: 13kg deer takes on 1.7-tonne rhino in extraordinary interaction
YouTube video by The Independent
youtu.be
January 10, 2026 at 9:55 AM
Reposted by Naoto Handa 半田直人
manonhullot.bsky.social
Right on time for #FossilFriday my lattest article is now online! 🎉 doi.org/10.1111/joa....

We propose a standardized methodological framework to study enamel histology in extinct species and identifiy enamel increments correctly, step by step.
January 9, 2026 at 9:59 AM
Reposted by Naoto Handa 半田直人
natecoevo.nature.com
Plant diversity enhances ecosystem resistance to increasing grazing pressure in global drylands 🧪 www.nature.com/articles/s41...
Extended Data Fig 1 from Biancari et al "Plant diversity enhances ecosystem resistance to increasing grazing pressure in global drylands". The image shows a map of global aridity with 8 representative photos of different dryland sites sampled in the study
January 9, 2026 at 11:23 AM
Reposted by Naoto Handa 半田直人
anatrecord.bsky.social
Ceratopsids like Triceratops are iconic—but how their horns and frills grew is still poorly understood. New osteohistology of a subadult T. horridus reveals major ontogenetic shifts in horn & squamosal growth & novel growth marks
Obuszewski et al.: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
January 9, 2026 at 12:01 PM
Reposted by Naoto Handa 半田直人
dinopantheon.bsky.social
博物館学の原点を問う新刊 ― 『博物館学の原理　何のための博物館学』 | ニュース | アイエム［インターネットミュージアム］ www.museum.or.jp/news/124154
博物館学の原点を問う新刊 ― 『博物館学の原理　何のための博物館学』 | ニュース | アイエム［インターネットミュージアム］
博物館学の原点を問う新刊 ― 『博物館学の原理　何のための博物館学』のニュースページ。　実際に現場で取材したニュースを、美しい写真とともにお送りします。美術館・博物館・アートのニュースはアイエムで！
www.museum.or.jp
January 9, 2026 at 9:22 PM
Reposted by Naoto Handa 半田直人
dinopantheon.bsky.social
スミソニアンマガジン
新たな化石分析により、この700万年前の霊長類は二足歩行していたことが示唆され、人類最古の祖先となる可能性がある www.smithsonianmag.com/smart-news/n...
New Fossil Analysis Suggests This Seven-Million-Year-Old Primate Walked on Two Legs, Potentially Making It the Oldest Known Human Ancestor
Fresh findings about arm and leg bones advance the debate over whether Sahelanthropus tchadensis was bipedal, but not everyone is convinced
www.smithsonianmag.com
January 6, 2026 at 3:55 AM
naotohanda.bsky.social
J'ai visité Kagoshima et New York.
December 30, 2025 at 3:10 AM
Reposted by Naoto Handa 半田直人
ipc7.bsky.social
📣 We’re thrilled to announce that the 4th Circular of the IPC7 is now available!

You'll find updated information on:
✅ Travel Grants
✅ Accommodation
✅ Abstract submission
✅ Plenary speakers

📥 Download the circular via our website -> www.ipc7.site
December 24, 2025 at 5:03 PM
Reposted by Naoto Handa 半田直人
paleosoc.bsky.social
Happy holidays from the Paleo Society!🎉
This #BookReview features Sea Level: A History by Wilko Graf von Hardenburg🌊which tells the history of developing technology and #Oceanography ⚙️🌏Learn how we know what we know about oceans & start off ‘26 with this page turner!
#Paleontology #Literature #Ocean
December 24, 2025 at 5:40 PM
Reposted by Naoto Handa 半田直人
anatrecord.bsky.social
🦈New SEM study on Carcharhiniformes shark dentition reveals heterodonty and crown variation across families. High-resolution data highlight diagnostic traits & show heterodonty drives diversity of the most speciose shark order
Zanini & Soares: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
December 24, 2025 at 7:00 PM
Reposted by Naoto Handa 半田直人
jzoology.bsky.social
Exploring the complexities of cooperative #breeding: insights from African wild dog packs - #OpenAccess zslpublications.onlinelibrary.wiley.com/doi/10.1111/... #carnivores #Africanwilddog #kinselection @elissazcameron.bsky.social @conservresearch.bsky.social @wileyecology.bsky.social
December 10, 2025 at 3:25 PM
Reposted by Naoto Handa 半田直人
anatrecord.bsky.social
New research traces evolutionary history of European rabbit (Oryctolagus cuniculus) through Pleistocene (~700ka). Analyses of 55 fossil populations reveal how climatic shifts drove changes in size & morphology, shaping biogeography.
Pelletier: anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
November 8, 2025 at 12:00 PM
Reposted by Naoto Handa 半田直人
thepalass.bsky.social
Microstructural & geochemical evidence offers a solution to the cephalopod cameral deposits riddle onlinelibrary.wiley.com/doi/10.1111/... @datadryad.bsky.social
Top: scheme showing the proposed new growth cycle model in an orthoceratoid. Ontogenetic progression of cameral deposits is shown from left to right (towards the apex). Organic sheets are formed when the soft body vacates the chamber, increasing the functional surface area of the siphuncle and guiding the precipitation of cameral deposits (red lines). Middle: Transmitted light (on the left) and cathodoluminescence (on the right in red and purple colours) microscopy images of Trematoceras elegans from the St Cassian Formation, Carnian, Late Triassic; PZO 16538-01, cross-section. Bottom: SEM image of Trematoceras elegans, PZO 16535-02, longitudinal section, showing the circular patterns of a single spherulitic sector, with a well-defined boundary to a neighbouring sector (interpreted as a cameral sheet).
November 9, 2025 at 3:43 PM
Reposted by Naoto Handa 半田直人
palaeo-electronica.bsky.social
Many #macroinvertebrate holotypes of the Santana Group are deposited and ultimately described in foreign institutions. This new study examines the ongoing loss of Brazil’s cultural and scientific heritage and proposes strategies to prevent and mitigate the impact of parachute science.
November 3, 2025 at 9:13 PM
Reposted by Naoto Handa 半田直人
dinopantheon.bsky.social
約2万年前のケブカサイの角を発見、1.6m超は史上最長のサイ角 | ナショナル ジオグラフィック日本版サイト natgeo.nikkeibp.co.jp/atcl/news/25...
約2万年前のケブカサイの角を発見、1.6m超は史上最長のサイ角
ロシア、サハ共和国の永久凍土から、1万9700年前のケブカサイの角が発掘された。長さ165センチはこれまで見つかったサイの角の中で最も長い。
natgeo.nikkeibp.co.jp
November 3, 2025 at 9:35 PM
Reposted by Naoto Handa 半田直人
vertevo.bsky.social
Unusual low-risk/high-gain strategy in small #bats: Short search and pursuit times with high hunting success rates and targeting prey approaching their own body size of 30 g.

Baier et al 2025 @currentbiology.bsky.social Extreme hunting efficiency in a carnivorous bat

doi.org/10.1016/j.cu...
November 4, 2025 at 6:40 AM