Happy #flyday Male widow #skimmer - Libellula luctosa (Shot near Cincinnati 7-25-25) 🪲🪳🐉🪰 #photography #wildlifephotography #wildlife #nature #animal #invertebrate #insect #dragonfly #bugsky #bug #ento

For #FossilFiday a new paper on the size change of Hopolopteryx fish during the #Cretaceous with varying ocean temperature. The study was part of the @chalksea.bsky.social project & led by Masters student, Chloe Griffiths. Well done Chloe 👏 onlinelibrary.wiley.com/doi/10.1002/...

Ray-finned fishes every million years or so @kacorn.bsky.social

“The Antediluvians recognize an old acquaintance” This cartoon appeared in Punch magazine, 27/07/1861 - linking the old age of our Dino friends with the previous appearances of the “Great Comet of 1861” The comet is now designated C/1861 J1, and is due to return in 2267 so…see you then, yeah??

Welcome back to #FossilFriday! Did someone order seafood on the menu? Here are the shells of the oyster Exogyra cancellata. These come from the Late Cretaceous (Late Campanian) Demopolis Formation in Tueplo, Mississippi. These oysters are so common that you fill your backseat with them.

Check out this awesome video summary of a recent paper on endothermy in fishes from my former lab mate Fernando Melendez! www.youtube.com/watch?v=2Qnw...

For #FossilFriday a posterior view of the braincase of the Early Cretaceous fish-eating spinosaurid dinosaur Baryonyx walkeri. In the collections of @nhm-london.bsky.social. First discovered in Barremian aged Smokejacks brick pit Surrey by collector William Walker in 1983. Time flies!

Nederland geeft fossielen Dubois-collectie terug aan Indonesië. Statement en meer informatie te vinden op www.naturalis.nl/persberichte...

The phylogenetic position of the Yunxian cranium elucidates the origin of Homo longi and the Denisovans | Science www.science.org/doi/10.1126/...

reality vs creationism

I am extremely happy to see that our review on fossil tip-dating is out in early view in Systematic Biology! A huge thanks to all the authors of this massive project (@heckeberg.bsky.social, @basantakhakurel.bsky.social, Gustavo Darlim, and @hoehna.bsky.social)! academic.oup.com/sysbio/advan...

3yr PDRA at @exeter.ac.uk with @york.ac.uk and Centre for Whale Research, studying how killer whale social relationships change with prey availability, partner loss and social info. A fantastic team & unique longterm dataset. Deadline 19 Oct! www.jobs.ac.uk/job/DOT336/postdoctoral-research-associate

This is probably someone's dream job, and could have some remote flexibility for the right person. We have a lot to do, and we're looking for someone with a really strong track record who can come here and build something big with us and @cchyale.bsky.social (and many great external collaborators).

Please help me get a job in a different country

Eleonorafalcons on Skyros/Greece. Absolutely fantastic birds.

3D printed salmon in progress! I'm clear-coating to protect my paint job before I paint and then attach the fins. #SciArt #NatureArt 🐟

major traffic incident

Our biology department is hiring!We our looking for a tenure-track professor with expertise in molecular biology 🧬 and/or plant biology, come join us! @sicb.bsky.social www.higheredjobs.com/institution/...

Take a closer look at the science behind measuring Otodus megalodon and why we've been doing it wrong for hundreds of years. Join Emily Osterloff and Museum scientist Emma Bernard as they discuss how to measure a megalodon using just teeth and vertebrae. 🦈 www.youtube.com/watch?v=KCGL...

This #ThrowbackThursday we are recalling episode 37, where we were joined by two colleagues from the USDA's Agricultural Research Service. We learned all about how aquaculture research also has an important place at this agency! Be sure to check it out on your podcatcher of choice!

It looks like Dinosaur Field Station of NJ is closing and selling their Dino sculptures

Our athyridide brachiopod paper has finally come out in Journal of Paleontology as FirstView! doi.org/10.1017/jpa..... Please let us know what you think!

I get that the news cycle is packed right now, but I just heard from a colleague at the Smithsonian that this is fully a GIANT SQUID BEING EATEN BY A SPERM WHALE and it’s possibly the first ever confirmed video according to a friend at NOAA 10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)

Four generic frogs? No! These are members of four different FAMILIES from Europe, Borneo, Madagascar, and East Africa, convergently evolved on the generic brown frog morphotype! 🧪🐸

The Dijkstra lab at CMU seeks PhD students for Fall 2026, funded by an NSF award, focusing on aggression in cichlid fish. Apply to Dr. Dijkstra by Oct. 20. More info: https://sites.google.com/site/peterdijkstrausnl/home #phd

🚨🚨 One of the clearest pictures of a subducting slab tearing to date? I think so, but tell me what you think! Super thrilled that our manuscript on slab tearing and subduction termination just went live in Science Advances! You can read all about it for free here: www.science.org/doi/10.1126/...

Sometimes you get a nice shot in dreadful light. Unfortunately the water was reflecting the sun right back at me as this great blue heron picked up a baby American alligator. #birds

Hi! We need lice for our diversity and adaptation project. Specifically, we need lice from zebras, camelids (camels, llamas, alpacas, vicuñas, guanacos) & aardvarks. If you or someone you know might have lice, I'm happy to discuss our inclusive collaboration plans! sites.google.com/nhm.org/anop...

Our paper on Nautilus sex determination made the cover of @currentbiology.bsky.social ! With @reef-combo.bsky.social @anariesgo.bsky.social and Hector Torrado! @leibnizlib.bsky.social Check it out now!

Here some nice story and commentary on our recent work in #Yucatan with @olakwiecien3.bsky.social, the Godwin lab and so many others! Kudos to all our friends that support our research in this lovely region! 🥰

Bloodsucking parasite, but it’s a native fish! Check out this native lamprey (compared to invasive Sea Lamprey) on a Northern Pike in a Minnesota River. Parasitic lamprey species attached to hosts, rasp a hole and suck blood (but native species don’t typically cause death). Both fishes released!

Drought was likely one of many stressors affecting Classic Maya cities. This paleoclimate record can help construct holistic pictures of how Maya cities responded to climate stress. eos.org/articles/maj...

🐃 The fishes of Pennsylvania Harrisburg, Pa.: E.K. Meyers, 1893. [Source]

We are hiring (Post number 2) - join us as a graduate research assistant to support killer whale research. Collaboration with @samellisq.bsky.social @drwhale.bsky.social Prof Dan Franks (York) start 1st Nov (or ASAP) end 31st Oct 2028. Apps close on 19th Oct. jobs.exeter.ac.uk/hrpr_webrecr...

We're still looking for presentations! Please share 😊

The ancestors of #flatfish once saw #rays, and had an idea! Then something went terribly wrong... #GoHomeEvolutionYouAreDrunk

Congrats @yanischrysost.bsky.social ! Our piece in @gigascience.bsky.social is out. We provide a reference genome for the endangered Ural 🦉 , investigate genome evolution and the utility of cell cultures for genomics with @leibnizlib.bsky.social @maxplanck.de

Wow, more 'myrids described in "Review of the southern African slender stonebashers, genus Heteromormyrus Steindachner 1866 (Teleostei: Mormyridae), with description of six new species" by Mutizwa, Kadye, Bragança & Chakona, open access in J Fish Biol. doi.org/10.1111/jfb....

🐟🧪

IOB "Overall, our results suggest that the laterally compressed bodies and tapered snouts function as control surfaces during feeding in substrate-biting #fish..." Perevolotsky et al doi.org/10.1093/iob/... #morphology #kinematics #teleost #science

Check out our new preprint! We compare sequence versus synteny approaches for resolving a challenging #phylogenetic problem. In this case, synteny is far more informative! Also includes the first chromosome-level #genome for the enigmatic #fish family Gyrinocheilidae. doi.org/10.1101/2025...

#NewSpecies of cichlid 🐟 from Madagascar. 🧪 deepblue.lib.umich.edu/bitstream/ha...

Yapped about my fish and won first prize! Had a wonderful time at #egg2025 last week @britishecologicalsociety.org

Be sure to check out our co-host Josh's new photography account as he learns aquarium photography!

Glass Catfish (Kryptopterus vitreolus) are native to Borneo #aquariumfish #fish #fishtank #fishtanksofinstagram #aquariumlife #aquariumhobby #aquarium #animal #animalphotography #animallovers

Makes sense, many biological systems show an intermediate sweet spot reflecting trade-offs at more extreme parameter values

#MolluscMonday: bivalves and gastropods in the Mid-Pliocene Ranquil Formation, Isla Mocha, Chile

GUESS WHAT WEEK IT IS

Slithering in the forests of New Zealand's Abel Tasman National Park, this species of carnivorous snail is one of the world's most endangered invertebrates.

What do we know about the earliest history of cichlid fishes? Here’s an extended and updated English version of my article on the biogeography and early evolution of cichlids, which I originally published in German in 2020. 🐟 🧪 #cichlid #biogeography #paleontology cichlidae.com/article.php?...