NEWS from Ohio State Fish Division: You can now search our 6,000-tissue collection on our website! 🐟 mbd.osu.edu/collections/...

The metamorphic transition of the frog mouth: from tadpole keratinized mouthparts to adult teeth: royalsocietypublishing.org/doi/10.1098/... @garethjfraser.bsky.social @danpaluh.bsky.social #evolution

New paper out in @devdynamics.bsky.social on lizard lung development! Project co-led w/ Kaleb Hill and also w/ @tonygamble.bsky.social @shylonatasha.bsky.social @aussiebiologist.bsky.social @bezbez.bsky.social @celestemnelson.bsky.social anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...

New preprint from my postdoc work! Using fluorescent imaging, scRNA-seq, and ATAC-seq of mouse, anole, and chicken embryos, we provide evidence that birds have co-opted vascular smooth muscle to generate the pulmonary smooth muscle in their lungs. More on this later! www.biorxiv.org/content/10.1...

Very happy that our new paper on the odd, looped optic nerves of chameleons is now out! It turns out having highly mobile eyes require some pretty specialized connections! doi.org/10.1038/s415...

Can lungless tadpoles get their lungs back before metamorphosis? Find out in this week's #AWNews featuring Phillips et al. (2025) at AmphibiaWeb.org

Last major paper of my #MSCA is finally out!! I modeled and mapped over 300 fish species in three orders in 3D to demonstrate how incorporating a depth perspective may offer a view of open-ocean biodiversity patterns that differs from a typical 2D approach. onlinelibrary.wiley.com/doi/10.1111/...

Pretty stoked that our article got the cover of the latest issue of @journalofanatomy.bsky.social! Check it out here: doi.org/10.1111/joa....

🥈 Second Prize – DevBio Art Contest 🎨
Hyloscirtus lynchi tadpoles captured in watercolor! 🐸 A tribute to this critically endangered Andean frog, showcasing its natural colors, unique hindlimb sacs & delicate morphology. 🌿 Painting by Sebastian Plata #DevBio #ScienceArt

Thanks to @amphibiaweb.org for featuring our new paper!

This week's #AWNews features a study by Paluh et al. (2025) that examined the developmental-genetic mechanisms underlying tooth formation in frogs and tested whether a rudimentary dental program is activated in the lower jaw. Read more at AmphibiaWeb.org.

Happy to share that our paper on the #evolution and #genomics of the most common #color polymorphism in #frogs is now out in @pnas.org! My favorite frogs even made the cover of this week’s issue! 🎉🐸🎉 Read the paper here: www.pnas.org/doi/10.1073/...

A specimen of the fossil fish Norselaspis yields a wealth of information on the evolution of the head-trunk interface in vertebrates www.nature.com/articles/s41...

Our new paper is out in Royal Society Open Science! The metamorphic transition of the frog mouth: from tadpole keratinized mouthparts to adult teeth doi.org/10.1098/rsos...

New paper is officially out! Ratfish have a second jaw on their foreheads - CT + histology show they’re real teeth, built from the same tissues and signals as oral teeth. www.washington.edu/news/2025/09...

Ever wondered how #sharks produce an unlimited supply of teeth? Our new preprint uncovers the genes within the dental stem cell niche driving lifelong tooth development. "Shark tooth regeneration: RNAseq reveals genes for unlimited dental renewal" 🦈🦷 bit.ly/47kkRHL

Excited to share our new paper by @danpaluh.bsky.social out today in @royalsociety.org Open Science; with a great team, including undergraduate researchers! "The metamorphic transition of the frog mouth: from tadpole kertanized mouthparts to adult teeth" 🦷🐸 royalsocietypublishing.org/doi/10.1098/...

Our new paper is out in Royal Society Open Science! The metamorphic transition of the frog mouth: from tadpole keratinized mouthparts to adult teeth doi.org/10.1098/rsos...

Excited to announce that the 1st paper from my postdoc is now out in @currentbiology.bsky.social ! Using a large dataset of 3D preserved fossils, we explore the diversification of jaws in early bony fishes. 1/15 www.cell.com/current-biol...

Excited to share the first paper from my PhD! We looked at what traits help Aneides salamanders excel at climbing using museum specimens, CT scans, SEM, and more! No claws or toe pads, so how do they do it? In short, with long limbs, big feet and grippy toes! 🦎🧪 DM for PDF doi.org/10.1098/rspb...

1) I am delighted to present this terrific tour de force research conducted by my post-doc Dr. Gayani Senevirathne @gayani.bsky.social and published today in Nature - www.nature.com/articles/s41...

Hello Bluesky: Long time listener, first time poster! Excited to share the first publication of my Ph.D. work studying the development of appendage shapes in @plosbiology.org! The zebrafish caudal fin is quite distinctive, and we examine the timing and mechanisms of how its shape might come to be!

My feather cell type paper is finally out! doi.org/10.1111/ede.... We’ve packed a ton of stuff into this paper but I’ll go through some highlights in this thread!

It's a great week to have Project RattleCam on your second monitor or TV! There is a good chance of rain in Colorado every day, and a chance to see the baby rattlesnakes engaging in "pupcake" behavior (pup pancakes!). Watch live at RattleCam.org www.nationalgeographic.com/animals/arti...

I am recruiting graduate students to begin August 2026. Apply by Nov 15th!

Tadpoles have...TEETH?! An evolutionary novelty of anuran tadpoles, the taxonomic distribution of keratinized labial teeth remains a mystery. Yet here, variation in row number was studied in a phylogenetic context! If you're bitten by a tadpole do you turn into a frog..? 🌍🧪👇

Keeping it local for world lizard day- Rhineura floridana, also known as the Florida worm lizard or, brilliantly, the thunderworm, is a truly bizarre and wonderful creature. Eyeless, burrowing and restricted to the sandy soils of the sunshine state. What a fabulous weirdo!

2025 Midwest Regional Meeting of the Society for Developmental Biology, Sept. 19-21: Registration and Abstract Submission now open! midwestsdbincincy.org #science #devbio #xenopus #frogs

Check out our new paper on the hemibacula of Aristelliger geckos!

"Carrot-tailed" chuckwalla (Sauromalus ater) basking in South Mountain Park, Phoenix

New paper from the lab: Our teeth arose as sensory organs on the outside of the body of ancient jawless fish.!! Congrats to Yara Haridy and the team! Background and video: phys.org/news/2025-05... Open Access Paper: www.nature.com/articles/s41... News and Views: www.nature.com/articles/d41...

Thread with an email being sent to @asn-amnat.bsky.social @sse-evolution.bsky.social @systbiol.bsky.social members today calling for a Tri-society week of action for NSF: Dear members: The tri-societies (ASN, SSE,SSB) are running a ‘Week of Action for NSF’. Your engagement is crucial.

Happy to share my new article on how morphological diversification proceeds during evolutionary radiations: "The diffused evolutionary dynamics of morphological novelty" www.pnas.org/doi/10.1073/... 🧵 1/12

Paper alert 🚨 Our 1rst paper with @vivienl.bsky.social and colleagues is out in Functional Ecology! In this paper, we investigated how complete metamorphosis promotes morphological and functional diversity in Caudata.Want to know more? Read this👇 besjournals.onlinelibrary.wiley.com/doi/full/10....

Ring-necked snake (Diadophis punctatus) displaying its unique defensive posture during fieldwork this weekend in Southern Indiana

The tooth, the whole tooth and nothing but the… frog? – the not-so bite-sized mystery of frog tooth re-evolution 🐸🦷 Check out this really fun post by @ryanharrison13.bsky.social, covering recent work from @danpaluh.bsky.social & team #preprint #preLight ⬇️ 👀 prelights.biologists.com/highlights/t...

New Pre-Print Alert! "Teeth Outside the Jaw: Evolution and Development of the Toothed Head Clasper in Chimaeras." We use fossil evidence, development and CT scans through ghost shark ontogeny to describe the emergence of the tenaculum! 👻🦈🦷 @karlycohen.bsky.social www.biorxiv.org/content/10.1...

🚨🐣 Our new paper is out @plosbiology.org! Sonic hedgehog inhibition transforms feathers into ancestral protofeathers-like structures. These units then recover after hatching, highlighting their remarkable developmental robustness! @lanevol.bsky.social 🧪 journals.plos.org/plosbiology/...

Happy to be a part of this team including former Villanova masters student Ben Karin @cbestvu.bsky.social www.nytimes.com/2025/03/17/s...

Great outreach event today organized by @maggiehantak.bsky.social's UD Herpetology class at Dayton Metro Library! 100 folks stopped by to learn about Ohio amphibians & reptiles, importance of natural history collections, and more

Forget how dark the world is for a moment and look at this spotted salamander who successfully crossed the road on its vernal pool migration last night.

New preprint alert. Ever wondered why frogs only have upper jaw teeth? @danpaluh.bsky.social investigates this conundrum and asks if frogs ever form lower jaw tooth rudiments and what the relationship is between tadpole keratodonts (keratin mouthparts) and teeth! 🐸🦷🔥 www.biorxiv.org/content/10.1...

Excited to share our new preprint, Tooth development in frogs: Implications for the re-evolution of lost mandibular teeth and the origin of a morphological innovation doi.org/10.1101/2025...

Firings happening right now at the NSF.

Happy birthday to Charles Darwin, who wrote one of the most poetic lines ever dropped in scientific writing: "There is grandeur in this view of life - that from so simple a beginning, endless forms most beautiful and most wonderful have been, and are being, evolved."

AVAILABLE NOW! Robert Hansen and Jackson Shedd have a new, comprehensive field guide to California amphibians and reptiles. Order directly (press.princeton.edu/books/paperb...) or from your local independent bookseller. it's gorgeous and really thoughtful in its details of California herpetology!

We CT scanned thousands of vertebrates from US natural history collections and made them freely available. Countless people have used the data for research (>200 pubs) and to learn anatomy/morphology. www.morphosource.org/projects/000...

Excited to play a small part in this important collaboration on the systematics of Atelopus. Nearly all harlequin toads are threatened with extinction. A roadmap for harlequin frog systematics, with a partial revision of Amazonian species related to Atelopus spumarius mapress.com/zt/article/v...

Nuestro trabajo de sistemática del género Atelopus acaba de salir del horno. Incluye redescripción de "Atelopus spumarius" y 2 nuevas especies: "A. harlequin", de Perú y Ecuador, y "A. histrionicus", de Perú. Enorme trabajo de muchos investigadores y muchas expediciones doi.org/10.11646/zoo...