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allocrioceras.bsky.social
@allocrioceras.bsky.social
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allocrioceras.bsky.social
@gabipaleo.bsky.social fajny paleo-art. Myślisz o studiach paleo po ochronie środowiska?
August 14, 2025 at 5:00 PM
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chalksea.bsky.social
#FossilFriday. In 1950, 10-year-old Stephen found a fossil #sponge on the beach at Seaford, East Sussex & donated it @nhm-london.bsky.social. 75 years later, Stephen visited us to see the specimen! Thanks to all the #ChalkHeroes who donated their finds over the years and make our research possible.
A man holding up an ornately written certificate A flint nodule containing a fossil sponge in a white box. Two labels identify it as Plinthosella from the upper chalk, Seaford Sussex
August 1, 2025 at 9:55 AM
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fossildetective.bsky.social
It's finally out! 200 years since the description of Eurypterus remipes, the first eurypterid named in the scientific literature, I present a summary of the history of eurypterid research and an updated taxonomy of every known species.🧪⚒️

doi.org/10.1206/0003...
Codex Eurypterida: A Revised Taxonomy Based on Concordant Parsimony and Bayesian Phylogenetic Analyses
Eurypterids, also known as sea scorpions, were aquatic chelicerate arthropods that were important components of Paleozoic marine and freshwater ecosystems from the Ordovician to the Permian. The group...
doi.org
June 11, 2025 at 4:16 PM
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astroroyalscot.bsky.social
Congrats to @desisurvey.bsky.social - it's looking more & more like dark energy isn't Einstein's cosmological constant! If you've woken up to the news & are searching for the publications, they don't appear to be on arxiv 🤷‍♀️ but they are online. 🔭 #cosmology 🧪
ℹ️: data.desi.lbl.gov/public/paper...
A graph of the evolution of the dark energy (vertical axis) as a function of time (redshift on the horizontal axis) - showing an offset from the cosmological constant (a flat horizontal line). Here is the figure caption from the paper: FIG. 12. Comparison of the constraints on the equation of state of dark energy using the CPL parametrization and a bin- ning reconstruction approach, using DESI+CMB+DESY5. The solid green line shows the best-fit w(z) based on w0 and wa inference and the green contours around it represent the 68% and 95% confidence intervals. We also show in blue the constraints from the binning approach [47], with the hori- zontal bars indicating the bin width (which is fixed) and the vertical bars representing the 1σ error. Additionally, we in- clude in gray the 1D posterior for each binning parameter. The ΛCDM limit corresponds to the horizontal gray dashed line.
March 20, 2025 at 7:27 AM
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belaforams.bsky.social
gulfof.mapquest.com?name=Foramin...

Mapquest letting us have some fun.
Gulf of Foraminifera
Check out my custom Gulf of Foraminifera map created with MapQuest!
gulfof.mapquest.com
February 15, 2025 at 12:50 AM
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matthewcobb.bsky.social
Retro sci-fi comic panel with two characters looking at an alien orrery. One says “What planet is this, your excellency?” The other replies “That is Earth. It is inhabited by a race of idiots!”
February 16, 2025 at 10:17 AM
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paleoadiel.bsky.social
‼️Research Alert‼️ Incredible mistakes by predatory gastropods: holes made from the inner side of a bivalve shell. 🙃 😃 First two instances from the fossil record. It's very rare though! Open access paper with Greg Dietl: doi.org/10.1017/jpa.... #FossilFriday #paleontology #fossil @almnh.bsky.social
January 9, 2025 at 10:23 PM
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dinosven.bsky.social
The holotype of Lorrainosaurus along with a model of the skull is on display in Luxembourg and can be seen 24 hours a day, 7 days a week, as it is placed in a large window facing the street. 2/2
Link to our OA publication: www.nature.com/articles/s41...
#museum #luxembourg #pliosaur #fossil
Lorrainosaurus keileni skull model and holotype mandible
February 14, 2025 at 3:19 PM
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russellgarwood.co.uk
For #FossilFriday meet Dunbaria. Isn't this fossil gorgeous? It was found in ~285 million year old rocks in Elmo, USA. It's a member of an order called the Palaeodictyoptera. Those patches you can see on the wings represent the colouration of the wings in life, preserved in a fossil 🤯

⚒️🧪🦀🦑 #evosky
A fossil insect - it is in a greyish rock, and you can see the fossil from above - i.e. we're looking at the dorsal surface. The head is clearly visible towards the top, and then below this two wings - arranged and shaped much like those of a dragonfly - stick out sideways. These have light and dark bands on them. Between these is a body which ends in a long 'tail' - actually two things called cercie sticking out its back. The fossil, apart from the light patches in the wings, is darker than the surrounding rock. A reconstruction of that insect fossil in monochrome, showing the colouration patterns on the wings and also more details of the head and thorax - including pointy mouthparts and an extra set of winglets on the first segment of the thorax.
February 14, 2025 at 1:58 PM
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nhmbryozoa.bsky.social
#MolluscMonday Limpets on the shoreline near the Espegrend Marine Station in Bergen where the weather looks set to be fine for this week’s workshop on bryozoans.
February 10, 2025 at 5:35 AM
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newseye.bsky.social
CONFIRMED: Trump has banned Associated Press from the White House & Air Force One for refusing to use the term “Gulf of America”.

The WH Press Sec accuses them of ‘pushing lies’.

At this point, EVERY reporter should have walked out.

If the media won’t defend the 1st Amendment what are they for?
February 14, 2025 at 6:41 PM
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nhmlibraryarchives.bsky.social
What happens when Valentine's Day and #FossilFriday collide?

Hippopodium ponderosum (plate 61) by George B. Sowerby (1812-1884).
We ❤️ fossils. #LoveIsAllAround

View his full collection of 148 watercolours via our #DigitisedCollections https://buff.ly/4hzvfgF
#ValentinesDay #Conchology #Valentines
An original watercolour illustrating three fossils in a line. The left and right fossils are heart shaped. All three are brown in colour. Handwritten below the images are the words 'Hippopodium ponderosum Min. Con. t.250'.
February 14, 2025 at 11:34 AM
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markwitton.bsky.social
New #paleoart to accompany a new paper on the skull of Vegavis, a Mesozoic bird that seems to be closely related to modern waterfowl, pushing the ancestry of modern birds into the Age of Reptiles. Link to paper: www.nature.com/articles/s41... #sciart #dinosaurs #birds #evolution
A flock of black and white diving birds float on and dive into Cretaceous seas. They are foraging for small ichthyodectiform fish that have already attracted attention from slightly frightening red Pachydiscus ammonites, which the birds send reeling as they swim around them. Further out are the silhouettes of approaching elasmosaurs. Against the sunset sky above, more birds fly in from the upper left, while floating birds variably consume fish, take it easy, or stare at us, breaking the fourth wall. They seem to ask "is anyone even looking at this part of the image, or did they just look at the centre for two seconds and move on?"
February 6, 2025 at 10:48 AM
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palaeojules.bsky.social
Phyllochrysa may have also been mimicking Selaginella, which was later identified from the Myanmar amber by Schmidt et al, 2022. This is a diagram I made for a blog in 2019, so it needs updating.
Also, just a note: Myanmar amber is ethically horrible, and studies on it should no longer be supported.
Diagram with pictures of a frilly league like insect, and some plant remains in amber, and a photo of a living selaginella. In the top left there is a drawing of a frilly, leaf like insect larvae, and on the left there is an insect with long jaws carrying a mound of debris on its back.
January 28, 2025 at 2:30 PM
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joschuaknuppe.bsky.social
This is a piece done before our #paleostream formation series started, I did it for purely educational purposes. The Jialingjiang formation is for me one of the most interesting Triassic formations, not just because it's the only place where we find hupehsuchians.

#paleoart #sciart #triassic
December 23, 2024 at 7:26 PM
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dactylioceras.bsky.social
A Pinaceae cone from the Early Jurassic (Sinemurian) of Belgium

Schizolepidopsis gerriennei sp. nov.

That´s a nice preservation
www.researchsquare.com/article/rs-5...
November 17, 2024 at 1:03 AM
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dactylioceras.bsky.social
Reassessment of an azhdarchid pterosaur specimen from the Mifune Group, Upper Cretaceous of Japan

Nipponopterus mifunensis gen. et sp. nov.

Art by Zhao Chuang

www.sciencedirect.com/science/arti...
November 16, 2024 at 7:24 PM
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ferwen.bsky.social
Navaornis and the evolution of the avian brain ⚒️🧪https://paleonerdish.wordpress.com/2024/11/15/navaornis-and-the-clues-of-bird-brain-evolution/
Navaornis and the evolution of the avian brain
Birds arose from a theropod lineage more than 150 million years ago. By the Early Cretaceous, they diversified and evolved into a number of groups with different anatomy and ecology. Enantiornithes…
paleonerdish.wordpress.com
November 16, 2024 at 2:38 PM
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ferwen.bsky.social
#FossilFriday The reconstructed
skull of Asfaltovenator vialidadi
🧪⚒️🦖
paleonerdish.wordpress.com/2019/12/11/i...
November 15, 2024 at 2:34 PM
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sethf.bsky.social
Not sure if #FossilFriday is a thing here, but just in case here's sunrise and sunset on a 4x4-cm landscape of brachiopods, bryozoans, and crinoid fragments from the Late Ordovician Ellis Bay Formation of Anticosti Island, Québec. Imaged with a Keyence vhx-7000.
November 15, 2024 at 3:47 PM
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apv2600.bsky.social
In honor of the slow dental development #Dmanisi paper out this week, here is a nice shot of the maxillar dentition of Dmanisi 2700 #fossilfriday
Lateral inferior view of fossil hominin skull from Dmanisi, Georgia
November 15, 2024 at 12:00 PM
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arctomet.bsky.social
#FossilFriday #FossilFridayAtoZ Skull of the Early Carboniferous stem-tetrapod Whatcheeria (image from the Field Museum)
Skull of the Early Carboniferous stem-tetrapod Whatcheeria
November 15, 2024 at 1:53 PM