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Reposted by Krista Koeller

Andrej Spiridonov @andrejpaleo.bsky.social · 11h

Extinct Pleistocene carnivores were diurnal and had high metabolic rates:
"Only basal metabolic rate and diurnality are robust predictors of extinction, even after accounting for phylogenetic and trait uncertainty"
nsojournals.onlinelibrary.wiley.com/doi/pdfdirec...
🧪 ⚒️ #Paleobio #Macroecology

Results of logistic regression analyses associating traits with extinction outcomes.

Violin plots comparing the basal metabolic rate and threat status of living species.

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Krista Koeller @kristalerista.bsky.social · 10h

Thank you for broadening my vocabulary!

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Reposted by Krista Koeller

Sarah McAnulty, Ph.D. @sarahmackattack.bsky.social · 10h

Might make my own little audio lesson for last minute cramming on the flight over.

"Ok, Sarah. Repeat after me.

Would you like a squid zine?
イカのジンはいかがですか？

Which way to the squid?
イカはどこですか？

Thank you for the squid!
イカありがとう!

No octopus please, I only like squid.
タコはやめて、イカだけが好きです。"

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Reposted by Krista Koeller

Germán Bonilla-Rosso @germusthermophilus.bsky.social · 1d

🔬🦠🧫🧪 #MicroSky
This is the most fantatic video I've ever seen: a Tardigrade strolling on a Volvox by Penny Fenton #NikonSmallWorld #DarkField
www.nikonsmallworld.com/galleries/20...

A tardigrade moving around a volvox algae colony | 2025 Small World in Motion Competition

Penny Fenton - A tardigrade moving around a volvox algae colony

www.nikonsmallworld.com

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Reposted by Krista Koeller

Damien Farine @damienfarine.bsky.social · 17h

Very pleased to see our study that formally quantifies the society of zebra finches. They have different types of relationships, and these form tiers, but they do not form a multilevel society.

royalsocietypublishing.org/doi/10.1098/...

This was a very nice collaboration with great colleagues.

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Reposted by Krista Koeller

Prof Susie Maidment @tweetisaurus.bsky.social · 1d

#Fossil Files podcast fans!! Today sees the release of Fossil Fails II: The tiny dinosaur with the massive flaw... Get our take on that whole Oculudentavis thing - available now on libsyn and wherever you get your podcasts! @thefossilfiles.bsky.social fossils.libsyn.com/fossil-fails...

The Fossil Files: Fossil Fails: The tiny dino with a massive flaw

Discovery of the smallest ever dinosaur acheived quite a splash when it was publised on the front cover of Nature in 2020. The new critter, Oculodentavis, was the size of a hummingbird and reconstruct...

fossils.libsyn.com

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Krista Koeller @kristalerista.bsky.social · 15h

So wholesome. So quaint.

a cartoon character with a mask on his face is eating food from a bowl .

Alt: No face from spirited away gorging itself. The black figure wearing a mask opens a wide maw underneath its head to consume a bathtub-sized bowl of food. The wide mouth, again, under its head has a tongue and irregular, reptilian teeth.

media.tenor.com

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Krista Koeller @kristalerista.bsky.social · 20h

Same! This is a genuine PSA. I bought into the stigma against fish and thought they were boring. It’s perhaps the thing I’ve been most wrong about.

They have so many beautiful patterns and colors! So many weird ways to arrange bones! So many superpowers!

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Krista Koeller @kristalerista.bsky.social · 21h

Don’t let anyone tell you fish are boring.

Blue Appaloosa @blueappaloosa.bsky.social · 1d

Fish cranial kinesis model is now listed in my Etsy shop! Hopefully useful for showing the mechanism that opens and closes a teleost fish's mouth.

(Ships from US) blueappaloosastudio.etsy.com

#SciArt #SciComm #BSNM #ArtShop #Fish

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Reposted by Krista Koeller

Blue Appaloosa @blueappaloosa.bsky.social · 1d

Fish cranial kinesis model is now listed in my Etsy shop! Hopefully useful for showing the mechanism that opens and closes a teleost fish's mouth.

(Ships from US) blueappaloosastudio.etsy.com

#SciArt #SciComm #BSNM #ArtShop #Fish

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Krista Koeller @kristalerista.bsky.social · 1d

Neat! Thanks for the information! That diagram is super helpful.

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Krista Koeller @kristalerista.bsky.social · 1d

They are basically small cows.

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Krista Koeller @kristalerista.bsky.social · 1d

Is the injection similar to one you would get for cosmetic reasons?

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Krista Koeller @kristalerista.bsky.social · 1d

Not if it’s resting on my ponytail. And if it does start to exert an uncomfortable pressure, it can easily be moved around and adjusted.

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Krista Koeller @kristalerista.bsky.social · 1d

I love them so much! How? What???

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Reposted by Krista Koeller

Emily Stepp @emilyart.bsky.social · 1d

#Paleoctober2025 day 6 paleoart sketch of the giant Late Triassic ichthyosaur Ichthyotitan.

#Paleoctober #Paleoart #ichthyosaur #Ichthyotitan

Painterly hour long digital sketch of the massive ichthyosaur in cool ocean waters with much smaller ammonites swimming past.

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Krista Koeller @kristalerista.bsky.social · 1d

Omg is that a thing???? I’m 5 foot nothing and am always looking up.

Krista Koeller @kristalerista.bsky.social · 1d

I’ve noticed a lot of the discomfort comes from ear loops, so I recommend the ones that loop around the head. If those don’t work for you, you can copy my weird contraption.

A woman with her hair in a ponytail wearing a face mask. The face mask ear loops are not looped around her ears, they’re hooked onto a piece of wire that is hidden in her hair. It’s basically a headband of wire that ends in small hooks just above and in front of her ears.

The wire contraption. It is a thin piece of aluminum wire that is shaped like the top of a head, but with a small bump at the top, to hook around the ponytail for stability. The two ends of the wires are hooks.

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Krista Koeller @kristalerista.bsky.social · 1d

Someone is retiring and I noticed they just recently changed their pronouns in their email signature. It’s never too late!

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Reposted by Krista Koeller

Dr. Brendan Anderson @fossilsndcoffee.bsky.social · 1d

Rutgers is looking for a vertebrate paleontologist: www.higheredjobs.com/details.cfm?...

Assistant Professor in Paleontological Vertebrate Evolution - HigherEdJobs

Jobs in higher education. Faculty and administrative positions at colleges and universities. Updated daily. Free to job seekers.

www.higheredjobs.com

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Krista Koeller @kristalerista.bsky.social · 1d

The lizard depicted here is likely Bachia flavescens!

Having more reduced hind limbs than forelimbs is extremely rare among limb reduced lizards, but happens most often in the group Gymnophthalmidae.

Ainsley S @americanbeetles.bsky.social · 1d

Okay but why did they illustrate it with an adorable cartoon of a limb-reduced lizard

Roger Freedman @rogerfreedman.bsky.social · 1d

The Nobel Prize in Physics 2025 has been awarded to John Clarke, UC Berkeley; Michel H. Devoret, Yale and UC Santa Barbara; and John M. Martinis, UC Santa Barbara “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.” #physics 🎢

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Krista Koeller @kristalerista.bsky.social · 1d

Also the short tail means it shed its tail at some point! Dude is smiling despite the trauma it has experienced!

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Krista Koeller @kristalerista.bsky.social · 1d

Three fingers on each hand and one toe on each foot is extremely rare. I’ve only heard of it occurring in some specimens of Bachia flavescens, who usually have just a thigh and shin going on, with no feet!

📸andruisp

A long lizard with a tiny arm and an even tinier back leg. It is scooting along on a tile with its tongue sticking out.

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Krista Koeller @kristalerista.bsky.social · 1d

Drepanosaurs: “what if we had even more claws?”

Maija Karala @maijakarala.bsky.social · 1d

Drepanosaurs have such character!

Drepanosaurus, a Late Triassic arboreal reptile not closely related to anything living today. #Sciart

Illustration of an angry-looking lizard-ish animal standing upright on two legs on a mossy branch. The animal is blue-green with orange eyes and very strong arms.

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Reposted by Krista Koeller

Journal of Experimental Biology @jexpbiol.bsky.social · 1d

Read this month's Editors' choice, Marine iguanas have lower metabolic rates during El Niño, by Shahar Dubiner and colleagues

journals.biologists.com/jeb/article/...

A Galápagos marine iguana (Amblyrhynchus cristatus) on a volcanic rock with a wave crashing in the background. Photo credit: Kenneth J. Lohmann.

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