#Chelicerate
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friel.bsky.social
Here is an Alabama #arachtober treat for y'all. 🦂🎃
Oldest North American orthostern scorpion from the Carboniferous (Pennsylvanian: Bashkirian) Pottsville Formation of Alabama, USA - The Science of Nature
Scorpions are an ancient chelicerate group with a fossil record extending back to the Silurian and a peak in reported fossil forms during the Carboniferous. Most Carboniferous scorpions are from Coal ...
link.springer.com
October 28, 2026 at 9:36 PM
brunobuzatto.bsky.social
Fantastic fossil scorpion paper published by amazing Gen Conway (@trigonotarbida.bsky.social) earlier this week!

link.springer.com/article/10.1...
Oldest North American orthostern scorpion from the Carboniferous (Pennsylvanian: Bashkirian) Pottsville Formation of Alabama, USA - The Science of Nature
Scorpions are an ancient chelicerate group with a fossil record extending back to the Silurian and a peak in reported fossil forms during the Carboniferous. Most Carboniferous scorpions are from Coal ...
link.springer.com
October 30, 2026 at 2:44 AM
corq.bsky.social
Purrsonal Trainer
submitted by /u/chelicerate-claws [link] [comments]
www.reddit.com
October 20, 2026 at 5:59 PM
molbioevol.bsky.social
Laumer, @prashantpsharma.bsky.social et al. examined the incidence of Pax family genes across chelicerate phylogeny and interrogated the expression and function of Pax2 and Pax6 homologs in the daddy-longlegs Phalangium opilio.

🔗 academic.oup.com/mbe/article/...

#societyjournal #evobio #molbio
MBE | Pax6 homologs are required for patterning both visual systems of the daddy-longlegs Phalangium opilio
October 7, 2026 at 6:01 PM
ch-1060.bsky.social
it's like the chelicerate equivalent of diplocaulus. i love it
October 5, 2026 at 11:07 AM
trigonotarbida.bsky.social
Better photo of the Urodacus scorpion close up painting. #arachnid #scorpion #arthropod #chelicerate
Photograph of an orange oil painting showing a close up of a scorpion
October 3, 2026 at 3:50 AM
null-tho.bsky.social
How much chelicerate anatomy did you learn for her?
September 29, 2026 at 11:33 PM
docvivileandra.bsky.social
People say BZ's chelicerate was "boring" when it's actually one of my favorite SN designs of all time - it's both very alien and very plausible!
September 16, 2026 at 2:32 PM
pseudonic.bsky.social
Yeah it does. It was a fancy Cambrian chelicerate.

Here's some more about it:
www.oeb.harvard.edu/news/2026/04...
www.oeb.harvard.edu
September 15, 2026 at 1:26 PM
questlog.bsky.social
I'm in too deep, can't stop now

- Shattered Records entrance
- The Deep Lore emote: "The answers are in there somewhere...."
- Ctenophore Shell: "For Ghosts who traverse strange, deep waters."
- Chelicerate Visitor: "Who knows what lives in the briny deeps?"
Eververse 9/14/2026 Obdurate Economy: "There's a big difference between going on assignment and taking a trip." -Commander Zavala Divine Messenger: "Go in peace. Return in triumph." Constant Vigilance Shell: "For Ghosts who keep an eye on things." • Arcade Games emote: "I got next!" Six Shooter emote: "Sturm? Drang? You don't need 'em." Catch of the Day emote: "It was THIS big!" • Alliterative Dance: "You have a dance! Put on your party pants and prance." Jubilant Dance emote No Ammo? No Problem finisher Long Journeys shader • Phoenix Rising shader Heirloom ornament: Gilded Birthright Ophidian Aspect ornament: Coaxial Bonds Team Spirit: "No Guardian works alone." Shattered Records entrance The Deep Lore emote: "The answers are in there somewhere...." Ctenophore Shell: "For Ghosts who traverse strange, deep waters." Chelicerate Visitor: "Who knows what lives in the briny deeps?"
September 14, 2026 at 10:41 PM
amypteride.bsky.social
What time is it? It’s #Cheliceratime & #FossilFriday!
For this entry we're talking about a recently named horned stem chelicerate, Magnicornaspis garwoodi!

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

#arthropod #cambrian #paleoart #sciart #bugsky #invert
1/4
This little arthropod from the Late Cambrian shows a shift in the evolution of mollisonids, an early lineage of putative stem chelicerates. Like several other species from this extinct order, it bears a spiny projection on its exoskeleton. 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, and with a horn going forward on the middle of said shield
September 4, 2026 at 3:30 PM
amypteride.bsky.social
You know the drill, let's talk about its discovery, paleoenvironment, age and morphology first to meet this arthropod.

#Cheliceratime
2/4
Magnicornaspis garwoodi is an extinct primitive putative chelicerate species, described recently in 2026. It’s known by a single fossil specimen from the Rivière-du-Loup Formation, a Cambrian geological outcrop part of the larger Trois-Pistoles Group from Québec (Canada). This arthropod was named in reference to the large single horn on its frontal shield, and to Russell Garwood, one of the currently top researchers on the topic of extinct chelicerates. Magnicornaspis garwoodi lived 490/485 million years ago during the late Furongian epoch. Back then, some of the area that would become Québec was underwater and in the Southern tropics. Magnicornaspis garwoodi environment was a rather calm marine slope, sometimes disturbed by underwater landslides. M. garwoodi was far from being an apex predator, and is mostly thought to be a small epibenthic predator, wandering on the sea bottom in search of food. It was part of a rich ecosystem that included many typical cambrian animals, such as graptolites, early mollusks, brachiopods and numerous trilobites. M. garwoodi was a small (2,6 cm long) arthropod and is mainly known by an unmineralized hard exoskeleton, looking a lot like a horned Mollisonia, with a long body subdivided into 3 main regions: A domed cephalon with a single horn and a large lateral cavity. This part is sometimes regarded as functionally similar to euchelicerates’ prosoma. A long, smooth & 7-segmented thorax, making up most of the body length. A flattened pygidium (no link to the pygidium of trilobites, it’s just a common descriptive word for basal arthropods). The most impressive feature of this animal is the large horn on its frontal carapace, a type of feature shared with other close relatives such as Corcorania trispinosa or the more distant Thelxiope spinosa. Appendages and eyes are lacking, but could be similar to what’s seen among other species of the Corcoraniidae family with long front limbs and large bubble eyes, all coming from the lateral opening of the cephalon. It’s also largely hypothesized each thoracic segment would bear a pair of flap-like appendages dedicated to respiration.
September 4, 2026 at 3:30 PM
yunayo8.bsky.social
Here's a clip from the #Subnautica stream yesterday :3
#ENVtuber
youtube.com/shorts/vGg7s...
The Chelicerate is better than the Reaper
YouTube video by Yunayo Channel
youtube.com
September 1, 2026 at 7:26 PM
daverodland.bsky.social
It's a eurypterid (sea scorpion), a Paleozoic chelicerate.
August 30, 2026 at 12:49 AM
trigonotarbida.bsky.social
Close up oil painting of a scorpion's mouthparts #scorpion #arachnid #chelicerate
Oil painting showing a close up of an orange scorpion's chelicerae, and some of the rest of the head including one ocelli and start of the pedipalps (trochanter and a bit of femur)
August 29, 2026 at 4:10 AM
amypteride.bsky.social
What time is it? It’s the #Cheliceratime Summer dump!

And for this last entry of the August specials I wanted to share one of my favorite WTF in chelicerate study's history!

Thanks for watching and I'll see you in the next Cheliceratime!

#evolution #arachnid #arthropod #vertebrate
August 26, 2026 at 1:31 PM
mossworm.bsky.social
On paper I think this is supposed to be a lobster, but it makes me think of some kind of extinct marine chelicerate
August 22, 2026 at 11:29 PM
jopabinia.bsky.social
Although, even the living chelicerate phylogeny is poorly understood...so it might not help you there
August 19, 2026 at 5:00 PM
audreygeo.bsky.social
#HorseShoeCrab #FakeCrab #tattoo #Chelicerate
Tattoo of a horseshoe crab in black and gray realism style.
November 11, 2024 at 3:29 AM
yoltonsart.bsky.social
The chelicerate is my favorite of the Subnautica leviathans. In addition to camel spiders, were you inspired by giant prehistoric arthropods as well?
May 8, 2026 at 2:54 PM
goblin.news
The undersewer has some of the best gargoyles you’ll never see. Not just winged things: proud serpents vomiting endless streams of golden effluent and innumerable chelicerate appendages proffering cauldrons simmering with methane.

A world more beautiful than many others, a world of possibilities!
March 18, 2025 at 4:49 AM
goblin.news
like the hermit crab this clock becomes distressed when removed from its scavenged shell, preferring to hang upside down clinging with four chelicerate appendages. when allowed back into the shell, routine vocalization resumes: a pendulum (reorganized seemingly to serve as a caudal lure) sways
February 25, 2025 at 4:45 AM
sethf.bsky.social
TIL that, like some of their
chelicerate relatives, pycnogonids fluoresce under UV! Turns out there are far more of them hanging out in the intertidal than I had realized before.
January 2, 2025 at 5:27 PM
americanbeetles.bsky.social
Looking for a copy of Social Insects (ed. Hermann, 1982), hard not to get distracted by the chelicerate literature
Snapshot of a row of book spines on the general area of the ant books, titles include HARVESTMEN, Scorpions of Medical Importance, and Tarantulas Today
September 29, 2025 at 6:18 PM