Sign in

Kai Caspar

@nomascus.bsky.social
1.4K followers 758 following 382 posts

Zoology lecturer @hhu.de | Armchair biologist | Mammalogist + board member @mammalbiology.bsky.social, also part of @themanybirds.bsky.social core team | Organismic vertebrate biology | Views my own

PostsRepliesMedia
Reposted by Kai Caspar
Xavier A. Jenkins @semifossorial.bsky.social · 14h
This is super important, because Westlothiana, as the (formerly) oldest crown tetrapod, had been used for molecular divergence estimates of Tetrapoda, and (mistakenly) for Reptilia by some studies.
Close up photos of the skull of Westlothiana, our reconstruction, and other important anatomy.Palatal, braincase, and gill arch elements of Westlothiana, covered in thousands of tiny teeth.
1204
Reposted by Kai Caspar
Sophie Boerman @crocsophie.bsky.social · 22h
🌊🐊 Were some of the earliest crocodylians venturing into the sea? 🦴 For our new paper in Palaeontology, we CT-scanned three skulls of “thoracosaurs” and found clues for a shallow-marine lifestyle in these enigmatic critters. ➡ doi.org/10.1111/pala... ️📖
A thoracosaur crocodylian hunting for fish in a colorful, biodiverse lagoonal ecosystem
22816
Reposted by Kai Caspar
Taylor Mitchell Brown @tmitchellbrown.bsky.social · 29/09/2026
New research finds the Suriname toad’s strange star-shaped fingertips are a kind of tactile eyeball that allow them to ‘see’ their prey. The toes detect subtle vibrations in the water and translate them into details about size and speed. #ToadToesTuesday 🧪🧪 New at @science.org
science.org
These frogs ‘see’ prey with their star-shaped toes
Fingertips of Suriname toads are hypersensitive motion detectors, new study reveals
03112
Reposted by Kai Caspar
ingmarvisser.bsky.social @ingmarvisser.bsky.social · 28/09/2026
This was a fantastic team effort across 30+ labs 🌍 Paper (open access), data & code all public. > 📄 doi.org/10.1111/desc... > 💻 github.com/manybabies/m... > #ManyBabies #InfantCognition #OpenScience #DevSci, lead team: Andreea Geambaşu, Melanie Soderstrom, and Claartje Levelt
doi.org
ManyBabies 3: A Multi‐Lab Study of Infant Algebraic Rule Learning
The ability to learn and apply rules lies at the heart of cognition. In a seminal study, Marcus et al. (1999) reported that 7-month-old infants learned abstract rules over syllable sequences and were...
33721
Reposted by Kai Caspar
Julio the Artist @lacerdajulio.bsky.social · 28/09/2026
Xenorhinotherium & Macrauchenia my beloveds This was mostly an exercise in achieving different fur textures in Blender, as well as an excuse to make an infographic since I haven't made one of those in a while. #SciArt #artbyjulio
A simple infographic showing a mostly tan, short-haired Xenorhinotherium and a dark brown, long-haired Macrauchenia against a solid background, with a human silhouette for scale. Each animal has a lineart of South America besides it showing an estimated range, and its scientific name below it.
711741
Reposted by Kai Caspar
Max Planck Institute of Animal Behavior @mpi-animalbehav.bsky.social · 24/09/2026
How do orangutans build their huge diet profiles before adulthood? @revathe.bsky.social and colleagues show, for the first time, how multiple forms of learning interact over many years to build broad, survival-relevant ecological skills in a wild great ape. Paper: doi.org/10.1126/scie...
Orangutans on the cover of Science
0297
Kai Caspar @nomascus.bsky.social · 24/09/2026
For the record: The @mammalbiology.bsky.social anniversary meeting in Berlin last week has been an amazing experience but I simply cannot do it justice here. Incredibly proud to be part of this community.
Specimens of some shrews native to the Oder valley close to BerlinBerlin victory column, illuminated at night and visited during an urban bat excursionDinosaur hall with sauropod skeletal mounts at the Natural History Museum, Berlin
041
Kai Caspar @nomascus.bsky.social · 24/09/2026
In Frankfurt today for a collection visit - and the Messel exhibition is promoted by perhaps the most attractive Gastornis reconstruction I've seen so far.
Gastornis walking though the Messel forest. Shown as a rather lean bird with grey plumage and widely exposed blue facial skin. Artist unknown.
020
Reposted by Kai Caspar
Sonja Vernes @sonjavernes.bsky.social · 23/09/2026
🦇 Bat1K's biggest paper yet is out. Largest bat genome + fossil study ever: 103 genomes, 44 fossils, 137 researchers. We rewrote the bat family tree! Bats likely originated in Europe ~65 million years ago, not Asia, Africa or Americas. @bat1kgenomes.bsky.social doi.org/10.1038/s41586-026-11007-3
16429
Reposted by Kai Caspar
ASAB @asab.org · 22/09/2026
🦎Wall lizards! 💆Enrichment! 😨Corticosterone! ☺️Welfare! Our #EditorsChoice for the #AnimalBehaviourJournal: "Ethologically informed enrichment improves behavioural and physiological indicators of welfare in a captive lizard" Read at doi.org/10.1016/j.anbehav.2026.123692
Screenshot of an article: 
Animal Behaviour Date: September 2026 Article: 123692 Volume: Volume 239 Ethologically informed enrichment improves behavioural and physiological indicators of welfare in a captive lizard
Alicia Bartolomé, Rupert Palme, Sabine Macho-Maschler, Pau Carazo, Enrique Font
0116
Reposted by Kai Caspar
Mongabay @mongabay.com · 17/09/2026
After 20 years of research, scientists have formally described Mus dumbara, a new spiny mouse species endemic to Sri Lanka’s Knuckles Mountain Range. First lured by burnt coconut in 2004, the elusive rodent highlights the island's overlooked small-mammal biodiversity. Story by Malaka Rodrigo.
mongabay.cc
How burnt coconut helped discover new to science endemic species in Sri Lanka
COLOMBO —  As dusk settled over the paddy fields at Puwakpitiya, a village on the northern edge of Knuckles Mountain Range locally known as Dumbara mountains in Central Sri Lanka, researchers began…
731291
Reposted by Kai Caspar
Fernando Garcia-Moreno @phylobrain.bsky.social · 18/09/2026
So, what distinguishes one reptilian pallium from another may be the lineage-specific modulation of a conserved transcriptional program. Building a neocortex may therefore have had more to do with re-using an ancient blueprint.
122
Reposted by Kai Caspar
Fernando Garcia-Moreno @phylobrain.bsky.social · 18/09/2026
Jiménez S., Moreno-Cerdá A., Moreno-Bravo J.-A., Moreno N. y García-Moreno F. (2026). Divergent structural trajectories for pallial regionalization within reptiles reveal conserved evolutionary blueprints. Cerebral Cortex 36(9): bhag131 🫶🏻 👉🏽 t.co/RtU0ninn3H
t.co
https://doi.org/10.1093/cercor/bhag131
022
Reposted by Kai Caspar
Paige Madison @fossilhistory.bsky.social · 15/09/2026
According to my editor, a document that holds about nine years of my life, pondering a very small human who died on an island a long time ago, is final (minus the copyedits). ✍️📚💀
Screenshot of an email attachment, a word document titled STRANGE CREATURES_final.docx , 2.1mb, with icons to save and add to drive.
7372
Reposted by Kai Caspar
Maija Karala @maijakarala.bsky.social · 12/09/2026
#SciArtSeptember 7: Fawn Xenokeryx amidalae, a strange species of ruminant that inhabited what is today Spain, some 15 million years ago. Miocene was a time of wonders. #SciArt
An illustration of Xenokeryx, a vaguely okapi-like animal with three short horns - one of them an elaborate structure between the ears - and small saberteeth protruding from its mouth. It is fawn-coloured with a white mask and stripes, on a round forest green background.
215450
Kai Caspar @nomascus.bsky.social · 13/09/2026
One of the most beautiful of all mammals, to me at least - Goodfellow's tree kangaroo from Papua New Guinea. Photo taken last week at Rostock Zoo. 🧪🦘
Zoo-housed Goodfellow's tree kangaroo rearing up to grasp leaves.
1526
Reposted by Kai Caspar
Ahana Aurora Fernandez @ahanaaurora.bsky.social · 10/09/2026
Attending the keynote talk of assistant prof Isabel Damas Moreira, University of Bielefeld, bridging lizard behaviour with antrophogenically influenced landscapes. Learning so many cool facts about lizards🦎 @dzg-behaviour.bsky.social
0194
Reposted by Kai Caspar
Margot Finn @eicathomefinn.bsky.social · 12/09/2026
'In some respects, what we are seeing resembles a form of collective grief. Not only grief for colleagues who have left, but grief for ways of working, professional identities and communities that once gave meaning to academic life. This creates an important challenge for university leaders.'
wonkhe.com
The loss of staff belonging in higher education
Nick Hulbert-Williams argues that what looks like low morale and change fatigue in HE may really be a crisis of belonging
711949
Reposted by Kai Caspar
Nature Portfolio @natureportfolio.nature.com · 10/09/2026
Evidence from Bianfu Cave shows specialized hunting, expedient stone-tool production and extensive bone use of Denisovans, providing new insights into their ecology, behaviour and cultural legacy in eastern Asia, according to a paper in Nature. go.nature.com/3SFqhrY 🏺🧪
This is figure 4, which shows stone artefacts and bone tools from Bianfu Cave.
1228
Kai Caspar @nomascus.bsky.social · 10/09/2026
I do want to point out: from all we know, these papers (and the people behind them) agree on most relevant points. What makes this topic so exhausting are not different views on noisy data but needless personal attacks fragmenting an already tiny field. Very tired and glad to move on from this ...
142
Reposted by Kai Caspar
Ruhr-Universität Bochum @ruhr-uni-bochum.de · 08/09/2026
Für seine herausragenden Beiträge zum Verständnis der Evolution von Gehirn und Kognition wird Prof. Dr. Onur Güntürkün von der @dzg-gerzoolsociety.bsky.social ausgezeichnet.
news.rub.de
Onur Güntürkün erhält die Karl-Ritter-von-Frisch-Medaille
Die Deutsche Zoologische Gesellschaft zeichnet den Biopsychologen der Ruhr-Universität Bochum für seine hervorragenden und originellen Leistungen aus.
1227
Reposted by Kai Caspar
J Pardo @jdpardo.bsky.social · 04/09/2026
Lots of new dinocephalian data here in this excellent paper, including possible soft tissues of the brain of Moschops anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
183
Kai Caspar @nomascus.bsky.social · 04/09/2026
Female pileated gibbon enjoying some cooked meat at Zoo Schwerin.
Close-up of a gibbon handling food. Relaxed facial expression.
000
Reposted by Kai Caspar
Jieyu Zheng @jieyusz.bsky.social · 04/09/2026
How fast can mice learn complex mazes? With @mameister4.bsky.social we reveal memory, generalization, latent learning, and remote credit assignment of mice in the Manhattan Maze. Do mice born without a cortex or hippocampus have them too? Check it out! www.biorxiv.org/content/10.6...
biorxiv.org
Rapid spatial cognition in mice, with and without neocortex and hippocampus
Rapid learning, memory, and generalization are often attributed to circuits of the neocortex and hippocampus, but their specific role remains unclear. To examine these cognitive abilities together in ...
512647
Reposted by Kai Caspar
Matej Frantisek Calfa @csapa.bsky.social · 04/09/2026
Trogontherium cuvieri by the sunset, Middle Pleistocene, Carpathian lowland
141
Kai Caspar @nomascus.bsky.social · 03/09/2026
Soon ... @themanybirds.bsky.social
Photo of a rhea (Rhea americana) at Rostock Zoo
030
Reposted by Kai Caspar
European Conference on Behavioural Biology @ecbb2026.bsky.social · 02/09/2026
#ECBB2026 Megan Lambert delivering the second keynote of curiosity-like behaviours in animals, Animal Curiosity: context, causes, and consequences. (Possibly also getting the unofficial award for best videos of the morning?)
0194
Reposted by Kai Caspar
European Conference on Behavioural Biology @ecbb2026.bsky.social · 02/09/2026
#ECBB2026 Why is neophobia important? Well @drrmiller.bsky.social shares this and more in the second talk focusing on curiosity-like behaviour in animals!
0204
Reposted by Kai Caspar
Dr. Or M. Bialik |📚|🔬|🌊|⚒️ @obialik.bsky.social · 31/08/2026
We got a new preprint in the wild. ​The Miocene was warm; the Miocene had high CO2, so how come the Miocene had huge coral reefs? By dialing in reefs' temperatures and modeling their carbon system, we think we have an answer. 🧪🌊⚒️ Link: www.researchsquare.com/article/rs-1…
Areal extent of the NWBR in the Browse Basin based on 3D seismic data (blue dotted lines). Unit boundaries (black lines) and seismic horizons (colored lines) from the region. Temperature reconstruction (in red), with the 2.5 °C uncertainty in GDGT-SST reconstruction indicated by red dashed lines above and below. The yellow box represents the published modern ideal coral reef growth window of 25 to 29°C. Global eustatic sea-level changes are shown at the bottom.
0178
Reposted by Kai Caspar
Dr. Gita Gnanadesikan @ggnanadesikan.bsky.social · 27/08/2026
ManyDogs wants to know what YOU want to know about dogs! 🤔 Take our quick, 10-minute survey to help guide our future studies. 📝 And please share with dog lovers near and far! 🐩🐕🐕‍🦺 #Dogs #DogResearch #DogScience #CanineResearch #CanineScience
01413
Reposted by Kai Caspar
EvOCRO Project @evocroproject.bsky.social · 28/08/2026
Next week, EvOCRO heads to Cambridge for #ECBB2026! Prof. Claudia Wascher and Francesca are part of the Core Organising Group, while Francesca and Prof. Anna Wilkinson are organising a symposium on reptile and amphibian behaviour. www.aru.ac.uk/events/confe...
aru.ac.uk
European Conference for Behavioural Biology (ECBB) 2026 - ARU
Find out about the European Congress for Behavioural Biology (ECBB) 2026, taking place from 1-4 September at ARU in Cambridge.
052
Reposted by Kai Caspar
Science News @sciencenews.bsky.social · 29/08/2026
Musically inclined mice inflate their throats like balloons to sing their whistling tunes. www.sciencenews.org/article/singing…
sciencenews.org
Singing mice puff up air sacs to make their sweet songs
To serenade with their high-pitched songs, singing mice inflate a throat sac — a use for air sacs seemingly unknown in any other animal.
0144
Reposted by Kai Caspar
Gregory Kohn @kohngregory.bsky.social · 29/08/2026
On this day in 1749 Goethe was born in Frankfurt. I’ve been revisiting Goethe more these days, and his writings on observation and its role in science impacted me deeply. Just recently I found this book of his holiday sketches titled “Reise, Zerstreuungs, und Trostbüchlein”.
1131
Reposted by Kai Caspar
Thomas R. Holtz, Jr. @arctomet.bsky.social · 26/08/2026
Tihelka, E., Vásquez, C., Engel, M.S. et al. Amphibious stem-insect sheds light on colonization of land. Nature (2026). doi.org/10.1038/s415...
doi.org
Amphibious stem-insect sheds light on colonization of land - Nature
Restudy of a challenging fossil using cross-polarized light imaging and phylogenetic reconstruction identifies Chosha praecursor, a probable early-diverging insect, helping to bridge the longstanding ...
04117
Reposted by Kai Caspar
Hady George @houdzgeorge.bsky.social · 25/08/2026
I was lucky enough to see endangered turtles hatch from their eggs and make their trip to the sea yesterday. The large swarm of humans scared off any potential predators. It wasn’t nearly as dramatic as in the documentaries
0166
Kai Caspar @nomascus.bsky.social · 24/08/2026
"Ethnohistoric data refer to three color morphs for Cryptoprocta—the ‘fosa mena' (red), ‘fosa ondry' (off-white, or colored like sheep), and ‘fosa mainty' (black)." A new recently extinct fossil species of giant fossa (~30 kg)! 🧪 www.tandfonline.com/doi/full/10....
tandfonline.com
New large species of Cryptoprocta (Carnivora, Eupleridae) and new specimens of C. Spelea from the Holocene of Tsimanampesotse National Park, southwest Madagascar
Among the extant endemic carnivorans of Madagascar (family Eupleridae), the largest species is the fosa, Cryptoprocta ferox. A larger species, Cryptoprocta spelea, survived into the Late Holocene. ...
000
Reposted by Kai Caspar
Wendel van der Sluis @wendelvandersluis.bsky.social · 15/08/2026
Genomic, biogeographic, morphological and ecological evidence identifies nine distinct species, all with highly restricted ranges and facing an immediate risk of #Extinction. Six match previously available names, while three are newly described. 2/4 @seh-herpetology.bsky.social
143
Reposted by Kai Caspar
Andy Farke @andyfarke.bsky.social · 24/08/2026
Computed tomography datasets and 3D models of California Quaternary tar seep faunas for education and research - new in @jvertpaleo.bsky.social - fantastic open dataset with great use for research & teaching! www.tandfonline.com/doi/full/10....
tandfonline.com
Computed tomography datasets and 3D models of California Quaternary tar seep faunas for education and research
The Rancho La Brea and McKittrick asphalt seeps of California have produced exceptionally rich Cenozoic fossil assemblages, preserving late Pleistocene to Holocene fauna from distinct environmental...
0189
Reposted by Kai Caspar
Claudio Tennie @ctennie.bsky.social · 24/08/2026
A 2025 Science paper reported that bonobos combine calls to create new meanings. We analyzed its stats and then reanalysed the data. --> The claim did not hold up. Our paper (open access): doi.org/10.7717/peer... With @johanlind.bsky.social @annajonand.bsky.social
59329
Kai Caspar @nomascus.bsky.social · 19/08/2026
One of my favourite works in all of the primatological literature. The orangutan is great but my highlight will always be the iconic type illustration of the Javan gibbon, which was scientifically named in this book.
Detailed drawing of a Javan gibbon by Audebert walking upright (as they do) and facing the viewer. The artist drew a stuffed animal that is still in the collection of the Paris Natural History Museum and is considered the holotype specimen of this species.
0165
Reposted by Kai Caspar
Helen Mylne @helephantmylne.bsky.social · 19/08/2026
Primate Profile #73: Shortridge's Langur We have very little information about this species, besides that it's endangered, lives in north Myanmar (bordering on China), and eats leaves. They are hunted for traditional medicine and threatened by habitat loss. Image: @fishingcatt (iNat.org)
Shortridge's Langur sat on a thin branch in front of a rocky cliff, with tail hanging down, looking towards the camera.

These monkeys have long grey fur with a thick tail. Their facial skin is black, but their fluffy sideburns stick so far in towards the muzzle that it looks like they are permanently confused by life, exacerbated by their very round brown eyes.
0114
Reposted by Kai Caspar
Wilson Ornithological Society @wilsonornithsoc.bsky.social · 18/08/2026
Do you illustrate birds? We are seeking new artists to contribute frontispiece illustrations for The Wilson Journal of Ornithology, and would especially like to highlight artwork made by members of the WOS and our colleagues. Details here!
wilsonsociety.org
Call for Bird Illustrators for The Wilson Journal of Ornithology!
Do you illustrate birds? We are looking for frontispiece illustrators for our journal!
14756
Reposted by Kai Caspar
Dr. Solomon David @solomonrdavid.bsky.social · 19/03/2026
Shedd Aquarium visitors checking out gars circa 1940s!
Black and white photo of public aquarium visitors viewing gars in an exhibit. Photo via Shedd Aquarium circa 1940s.
213827
Reposted by Kai Caspar
Rod Page @rdmpage.bsky.social · 14/08/2026
Just finished adding articles to @biodivlibrary.bsky.social scans of Transactions of the Zoological Society of London @zslofficial.bsky.social, which include some stunning illustrations of mammal and bird skeletons, such as these chimp and gorilla skulls biostor.org/reference/32...
1164
Reposted by Kai Caspar
Dr. Abigail Desmond @abigaildesmond.bsky.social · 12/08/2026
Why don’t all animals use tools? Great question. So, we wrote a paper about it. 🐹🛠️🐜📡🐙🧰 If you like archaeology, technology, game theory, cybernetics, behavioral economics, and/or crazy critters great and small, this is the paper for you. www.animalbehaviorandcognition.org/article.php?...
animalbehaviorandcognition.org
Why Don't All Animals Use Tools? — Animal Behavior and Cognition
1206
Reposted by Kai Caspar
Claudio Tennie @ctennie.bsky.social · 12/08/2026
link.springer.com/article/10.1...
link.springer.com
Evidence that the use of tools to forage for oysters was an established cultural trait among chimpanzees in 17th century Sierra Leone - Primates
We discuss a historical report of chimpanzees Pan troglodytes using stone tools to forage for large oysters Crassostrea tulipa at the Sierra Leone River estuary in 1678, a behaviour that was also note...
02312
Reposted by Kai Caspar
Dr Craig R McClain @drcraigmc.bsky.social · 10/08/2026
Two deep-sea giants, two ways to hold on. The colossal squid grips prey with rotating, swiveling hooks on its arms. The giant squid instead lines its suckers with rings of sharp, saw-like teeth, the ones that scar sperm whales. Same problem, two brutal solutions. 🦑 🧪 #MolluscMonday #HowToBuildAGiant
The suction cups of a giant squid and the hooked ones of a colossal squid.
45822
Reposted by Kai Caspar
Joschua Knüppe @joschuaknuppe.bsky.social · 10/08/2026
Result from the López de Bertodano Formation #paleostream! I have been looking forward to this one for a while as it combines some fascinating aspects of the latest Cretaceous. This formation was deposited in Antarctica and I hear you all: "wait a sec, that's not what I...
416958
Reposted by Kai Caspar
columbo screenshots @columboscreens.bsky.social · 09/08/2026
1392122