Amypteride🏳️‍⚧️🔻🕷🦂

Wow it looks amazing!!

90% of the analysis of Iran misses the point.
Here's the point:
- Trump is a fascist.
- Fascists start foreign conflicts to inflame supporters, sow chaos, grab power at home.
- Trump will exploit "wartime" to try to suspend U.S. elections.
- Read Tim Snyder on fascism. Read Orwell.
- RESIST.

Alt: A jumping spider waving it's front legs in a greetings-like movement

I just realized something, need help from arachnids nerds👋🕷

All arachnids with venom (spiders, scorpions, pseudoscorpions) are arachnopulmonates... has there been any study on the evolution of venom across arachnids & the possibility for it to have deep phylogenetic roots, like a deep homology?

Picture of Marjane Satrapi alongside a quote from her. The quote reads: The world is not divided into countries. The world is not divided between East and West. You are American, I am Iranian, we don't know each other, but we talk together and we understand each other perfectly. The difference between you and your government is much bigger than the difference between you and me. And the difference between me and my government is much bigger than the difference between me and you. And our governments are very much the same... - Marjane Satrapi, Iranian-French graphic novelist

Thinking about this quote from Persepolis creator Marjane Satrapi again.

This Burgess Shale criter is one of the oldest confirmed chelicerate, and the oldest as of date to show clear recognizable chelicerae. Fossilization of numerous non-mineralised tissues allowed scientists to study this arthropod in a lot of detail. Size : 2,5 to 3cm of body length Time period : Late Cambrian Paleoart speculativometer : Few missing details The animal drawn looks like a shrimp with a short, round & domed head without antennae

What time is it? It’s #Cheliceratime & #Fossilfriday!
For this entry we're talking about one of the oldest chelicerate, Mollisonia plenovenatrix!

All the basic infos are here but if you want to learn more, there’s more below!⬇️

#arthropod #cambrian #paleoart #sciart #bugsky #invert
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Environ 336000 signataires pour la pétition contre Duplomb 2 : c'est trop peu ; et il s'agit vraiment de se réveiller pour empêcher cette mesure de destruction de notre santé (n'hésitez pas à republier ce post ou à alerter vos propres abonnés) :

petitions.assemblee-nationale.fr/initiatives/...

On tue ou kidnappe les plus gros méchants barricadés de l'histoire en 1 nuit sur des territoires immenses.
Il faut 2 ans de bombardements, un territoire équivalent à 2 départements français rasés et 100 000 morts dont 25 000 enfants pour retrouver une dizaine de chefs du Hamas.

Journal of Graphic Novels and Comics, Research Article. Dys-appearing and eu-appearing trans bodies: an examination of Julia Kaye's Super Late Bloomer by Archita Mondal & Rajni Singh

ABSTRACT This paper examines Julia Kaye’s autobiographical graphic narrative, Super Late Bloomer, to explore how trans embodiment is represented in the daily comic strip form. It traces Kaye’s gender transition journey, scrutinising the utilisation of visual metaphors and graphic structure to depict trans dys-appearance and trans eu-appearance that articulate the affective states of dysphoria and euphoria, respectively. We argue that the comic’s distinctive formal grammar, its repetitive, daily three-panel structure, supports the non-linear experience of gender transition, a concept this paper terms the ‘embodied oscillation of trans appearances’.

It explores how the graphic medium can facilitate trans representation by offering an intimate engagement with the embodied aspects of identity and minutely capturing the transitioning body, thereby reflecting the individual’s body image. Additionally, the paper examines how the narrative presents a broader continuum of trans realities by delving into the role of mirrors, makeup, and gender markers (both feminine and masculine) alongside gaze, internalised transphobia and narcissistic investment in delineating the nuances of dysphoria and euphoria in the narrative. In doing so, the comic resists trauma-exclusive framings and linear before/after transition plots, instead presenting the trans self as an ongoing, rhythmically formed process.

man, this is the coolest

an academic paper about my first book was published recently ☺️

PARDON ?
Avoir des gens qui peuvent plus bouffer à cause d'un algo d'analyse qui fait une connerie c'est bien un fantasme de droitard, le jour où on leur prendra tout parce qu'ils nous auront assez malmenés pour qu'on arrête de subir ça va leur faire tout drole à ces cuves à pisse

Les bombes qui s’abattent sur L’IRAN ne sont pas plus libératrices que celles d’hier sur l’IRAK.
L’impérialisme US pense pouvoir intervenir comme bon lui semble, où bon lui semble.
Solidarité avec le peuple iranien, contre l’oppression du régime et les ingérences impérialistes

Photographie au format paysage d'une petite larve d'insecte, probablement de staphylin, sur le sol. La larve est fine et très allongée. Elle a une tête assez allongée, brune. Le reste de son corps est d'abord brun, puis tire vers le gris.

Larve de coléoptère (staphylin ?)

Haute-Garonne, France
24.02.2024

📷 flic.kr/ps/3Yi5zJ #Photographie #Insecte

It is very late summer in North America during the Jurassic period, and ginkgo leaves have begun fallen upon this group of Stegosaurs, one of which carries on its thagomizers an important reminder that life in this era was cheap, and natural selection acts at incredible speeds.

Huh. He literally did the speech.

Finally, some good news!!

a cartoon character is covering his eyes with his hands . ALT: a cartoon character is covering his eyes with his hands .

Les assos, surtout de défense des travailleureuses et écolo, qui utilisent l'IA gen dans leur com, vous saoulez!

On vs explique gentiment que c'est pas ouf et vous faites les grandes offusquées: "vous vous trompez de combat", "votre remarque est inappropriée", "on y peut rien si l'IA c'est du vol"

Thank you! :D

Yeah I'm really not convinced at all by the arachnid claim, all the issues I had with the study (mainly the generalization of an organ/system phylogeny to a taxa phylogeny) were corroborate by your recent response

I stick to the chelicerate for now but a revision wouldn't surprise me

bright orange cartoon spider with ziggy stardust makeup

David Bowie Spider (Heteropoda davidbowie) #febugary2026

Drawing showing biodiversity from the Carboniferous of Puertollano, which includes plants, arthropods, fish and tetrapods. From left to right, top to bottom: - The giant millipede Arthropleura walking through the forest floor, next to an amphibian (maker of the Puertollanopus tracks) and insects - General view of the swamp landscape, with a volcano erupting in the background - A early synapsid, maker of possible Dimetropus tracks - Pecopteris monyi, leaves of a tree fern - A pair of Acanthodes swimming through vegetation and smaller fish - The temnospondyl Iberospondylus schultzei swimming next to some platysomid fish - Small clam shrimp Euestheria - Two lycophytes Omphalophloios puertollanense next to some swamp creatures - The xenacanth Orthacanthus hunting in the murky waters - Juvenile shark Lissodus hiding from the fish Progyrolepis speciosus - Puertollanichthys richtei, a small fish, swimming through the vegetation

🌴🦈Carboniferous Puertollano🐸🌋
In the lands of La Mancha, fossils from the Late Carboniferous known from old coal mines reveal a tropical coastal swamp ecosystem, rich in aquatic and plant life
#paleoart #FossilFriday #Carboniferous #Puertollano
🧵Thread for additional explanation

M. plenovenatrix discovery was followed these last years by several works uncovering an increasing diversity of primitive cambrian chelicerate groups like the mollisoniids (like Mollisonia, Thelxiope, Corcorania) and the habelids (like Sanctacaris, Habelia), all sharing a similar body type of small bottom-dwellers with extending front legs & flappy respiratory appendages. Some of them even coexisted, both Mollisonia, Sanctacaris & Habelia having been found in rocks from the Burgess Shale.

They were far from being apex predators, something that has been noted too for mandibulates (crustaceans, insects, myriapods). It seems that during the Cambrian, modern arthropod groups were small background species, overshadowed by now extinct groups. Chelicerates started to truly diversify only during the Ordovician, a time period usually associated with the rise of a more modern worldwide fauna after the extinction of most of the primitive soft-bodied groups that ruled during the Cambrian. To make it simple, if the Cambrian explosion provided the blueprints for animal evolution, Ordovician’s beginning was when ecological roles truly started to stabilise. In a way, chelicerates were a bit like mammals were before the extinction of the non-avian dinosaurs: a group of small bodied, mainly generalist animals that diversified after new niches opened.

Is this paleoart accurate ? I was bored to always see the same drawing POV for paleoarts of this species, so I tried something new to show how long the body is! The overall coloration was inspired by some shrimps, I thought of how a big & same-colored pygidium could act as a decoy to protect the prosoma. Perspective on big curvy things isn’t my strong suit, so if you tell me that the shape looks weird I won’t be offended at all. I chose this POV so that most of the appendages could be seen.

REFERENCES · Aria C. & Caron J.-B., 2019. A middle Cambrian arthropod with chelicerae and proto-book gills. Nature 573, p. 586–589. · Bolton S.J., Friedrich M. & Sharma P.P., 2026. Mollisonia is probably not an arachnid. Current Biology 36, p. 126–127. · Dunlop J.A. & Lamsdell J.C., 2017. Segmentation and tagmosis in Chelicerata. Arthropod Structure & Development 46, p. 395–418. · Lerosey‐Aubril R., Kimmig J., Pates S., Skabelund J., Weug A. & Ortega‐Hernández J., 2020. New exceptionally preserved panarthropods from the Drumian Wheeler Konservat‐Lagerstätte of the House Range of Utah. Papers in Palaeontology 6, p. 501–531. · Lerosey-Aubril R., Skabelund J., Ortega-Hernández J., 2020. Revision of the mollisoniid chelicerate(?) Thelxiope , with a new species from the middle Cambrian Wheeler Formation of Utah. PeerJ 8, e8879, 29 pp. · O’Flynn R.J., Liu Y., Hou X., Mai H., Yu M., Zhuang S., Williams M., Guo J., Edgecombe G.D., 2023. The early Cambrian Kylinxia zhangi and evolution of the arthropod head. Current Biology 33(18), p. 4006 - 4013. · Palmer D. & Barrett P., 2009. Evolution: The story of Life. Octopus Publishing Group, 368 pp. · Strausfeld N.J., Andrew D.R. & Hirth F., 2025. Cambrian origin of the arachnid brain. Current Biology 35, p. 3777-3785. Colorado Plateau Geosystems Inc., 2023 & 2026. North America & Global Series. In DeepTimeMaps . Online at https://deeptimemaps.com/map-lists-thumbnails/global-series/ & https://deeptimemaps.com/map-lists-thumbnails/north-america/ The ICS international chronostratigraphic chart 2025. Episodes 2025. Online at https://stratigraphy.org/chart

Why Mollisonia is important in understanding chelicerates' evolution is because of what it represent before the group really exploded later in the Ordovician (+the usual drawing auto-feedback & some refs).

Thank you for reading & I’ll see you on the next #Cheliceratime!
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The Mollisonia genus is known through numerous specimens showing internal organs, including the nervous system. Its big eyes and similarities with some arachnid brains indicate it was relying a lot on its vision to hunt and that chelicerates were already active hunters back 500 million years ago. These similarities even led some to claim that the Mollisonia genus could be an arachnid. To make it quick, even tho some similarities are here, this particular claim of being an arachnid didn’t take into account the rest of the body, had several methodological flaws and didn’t take into account the large literature of these last years about how chelicerate evolution isn’t as linear as we thought for centuries. We’ll talk about this in much more detail in a few months, I plan to make an entire post on the topic because my thoughts were corroborated a few days ago by a response that summarized the same things. I won’t elaborate much beyond saying that it’ll be considered here as a basal chelicerate and that an arachnid-like brain may be the default setting among chelicerates.

Mollisonia plenovenatrix lived 505 million years ago during the Miaolingian epoch. Back then, the area that would become the Burgess Shale was underwater and in tropical latitudes. The Burgess shale is known to be a near ancient continental slopes, so M. plenovenatrix may have lived in deep areas of shallow coastal seas. M. plenovenatrix was far from being an apex predator, this role was assigned to way bigger animals like some trilobites, giant lobopods and radiodonts (like Anomalocaris). It was most likely a medium-size hunter (for Cambrian standards, for us it looks small) that roamed across the sea floor in search of food.

So, is Mollisonia plenovenatrix the grandpa of all chelicerates? Absolutely not, far from it in fact! A 2-segmented chelicera, such primitive respiratory organs & a wide fused pygidium at the back are completely incompatible with the morphology modern species could have arisen from. However, the body plan this morphology could have evolved from is really similar to what’s hypothesised to be the ground body plan of euchelicerates. With several other species, it’s part of the mollisoniids, a small order of basal euchelicerates that branched off early from the group that led to modern euchelicerates. The slide also comprise a phylogenetic tree showing mollisonids like M. plenovenatrix as the sister group to all modern euchelicerates (like arachnids & horseshoe crabs), while pycnogonids are an external group to this assemblage

Mollisoniids are a recent addition to the list of chelicerates orders and took shape these last years due to a revision of numerous previously known fossils that shared similar traits with M. plenovenatrix, which allowed to place them among chelicerates. These arthropods appeared to be already widespread by the time the Cambrian explosion faded, and remained present at least to the beginning of the Ordovician.

We continue with details about its internal anatomy (more on that in a few months), when & where it lived and its place among chelicerates, which is kinda special due to how old and "primitive" it is.

#Cheliceratime
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Mollisonia plenovenatrix is an extinct primitive chelicerate species part of the genus Mollisonia, a long-known genus named first in 1912 by Charles Doolittle Walcott in his historical works on the Burgess Shale. This fossiliferous site from the Canadian Yoho National Park is famous for its importance in paleontology’s history, some of the most popular extinct invertebrates like Anomalocaris having been first described from this locality. Mollisonia plenovenatrix itself was named way later in 2019 on new fossils, from the same Burgess Shale, that showed its chelicerate affinities.

M. plenovenatrix was a small (2,5-3 cm long) arthropod with a long body known by a large number of specimens, 49 being mentioned as of 2019. The body was already subdivided like it is with arachnids & horseshoe crabs into a shielded prosoma, bearing numerous pointy appendages, and then an opisthosoma that made up most of the body length, ending with a flattened broad part and with multiple respiratory organs. This morphology turned the whole body into one big fin flapping up to down, like shrimps & whales.

The prosoma is protected by a short & domed carapace, with its front part protruding frontward. One cool thing with Mollisonia plenovenatrix is the preservation of various appendages beyond the sole exoskeleton: - What M. plenovenatrix is famous for: the oldest pair of chelicerae in the world as of 2026. They are short & 2-segmented, contrasting a lot with the 3-segmented ones of euchelicerates & the 3 to 5-segmented ones across pycnogonids. - 3 long pairs of pointy legs extending beyond the carapace. - 3 shorter pairs of double legs with sharp bases, probably used to process food. - Huge lateral eyes, housed in a dedicated cavity in the carapace.

The opisthosoma made up for most of the body length (more than 80%), and just like before, one cool thing with Mollisonia plenovenatrix is the preservation of various appendages beyond the multispined exoskeleton: - Most of the length is taken by 7 free articulated segments. - The fossil was well-preserved enough to see a bit of its internal organs, like its digestive tract. - Each segment bears a pair of flappy appendages that are the external part of the legs. They most likely represent a transitional stage between the primitive arthropods’ gills and the more derived gills of horseshoe crabs & eurypterids. - The last 4 segments are fused into a broad part called “pygidium” (no link to trilobites’ pygidium, it’s just the same name).

First, thanks to how well its fossils are preserved, there's a lot to say about its morphology! (+ a lil' bit about its discovery)

#Cheliceratime
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This Burgess Shale criter is one of the oldest confirmed chelicerate, and the oldest as of date to show clear recognizable chelicerae. Fossilization of numerous non-mineralised tissues allowed scientists to study this arthropod in a lot of detail. Size : 2,5 to 3cm of body length Time period : Late Cambrian Paleoart speculativometer : Few missing details The animal drawn looks like a shrimp with a short, round & domed head without antennae

What time is it? It’s #Cheliceratime & #Fossilfriday!
For this entry we're talking about one of the oldest chelicerate, Mollisonia plenovenatrix!

All the basic infos are here but if you want to learn more, there’s more below!⬇️

#arthropod #cambrian #paleoart #sciart #bugsky #invert
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#JugePasMonGenre : changement d'état civil libre & gratuit Les personnes trans doivent pouvoir changer de sexe sur leurs papiers sans passer par les tribunaux. Soutenez la campagne « Juge pas mon genre ».

Signez en mass pour un changement d'Etat civil libre et gratuit ⬇️
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There are good chances for me to be late for today's cheliceratime, it might be out later than usual!

Netflix Backs Out of Bid for Warner Bros., Paving Way for an Ellison Takeover

The richest man owns X.

The second and third richest men control Google.

The fourth richest man owns Facebook, Instagram, and WhatsApp.

The fifth richest man owns The Washington Post.

And now the sixth richest could soon take over both Paramount and Warner Bros.

See the problem here?

This is what I need cis folks to understand.

It's been a decade.

Imagine living TEN FUCKING YEARS watching as a blatant, artificial campaign to erase your personhood, your identity and your safety chugs along, increasing in power every single day, and most people don't care or dismiss it

Je sais pas si on réalise bien, en fait.

"Temps d'en finir" avec toute une catégorie de population, ça me fait penser à un truc. Dans l'histoire. Du type heure sombre.

Kansas Sends Letters To Trans People Demanding The Immediate Surrender Of Drivers Licenses "The legislature did not include a grace period."

It seems all Kansas-issued trans drivers' licenses are invalid, effective tomorrow

It is now illegal for trans people to drive a car until they surrender their license at a DMV (that most will need to drive to) and have it reissued with the wrong gender marker

This was never about woman's sports

C'est un génocide. Putain tous ces gens massacrés parce que des connards s'accrochent à un système genré binaire purement fictif sans fondement biologique dont même des gosses de 4/5 ans se foutent. On nous extermine et efface purement et simplement.
Et vous pourrez pas dire que vous savez pas.

A digitally painted portrait of a Utahraptor

Utahraptor

#paleoart #sciart #art #dinosaur