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@dmcediacaran.bsky.socialSep 25, 2026, 11:08 AM

Happy #FossilFriday! The Ediacaran of #Newfoundland is famous for its animal fossils. The most iconic are the muscular #Staurozoa #Haootia and #Mamsetia and I think our new 551Ma #Edrathina is probably comparably important , being the oldest relative of comb-jellies, another early animal group.

retrodeformed holotype of Edrathina see strain ellipse branches arise from margin of a calyx which is triangular in shape interpreted as being a relative of the Ctenophores, the similarly shaped stem-ctenophores like Siphosauctum and Dinomischus Holotype of Haootia quadriformis linesr features are interpreted as muscle fibres. It has been interpreted as a crown group Cnidarian comparable to the modern Staurozoa note the tetra-radial form characteristic of that group
@houdzgeorge.bsky.socialSep 25, 2026, 11:08 AM

For today's #FossilFriday have a read of my thoughts on how we know what we know about the brains of extinct animals. A fun interview by Samer

hypothesisdump.com/reading-ston...

@journalsystpal.bsky.socialSep 25, 2026, 10:45 AM

For #FossilFriday.. the teeth and gill filaments of 𝙎𝙖𝙪𝙧𝙤𝙥𝙨𝙞𝙨 𝙡𝙤𝙣𝙜𝙞𝙢𝙖𝙣𝙖.

Redescription of 𝙎𝙖𝙪𝙧𝙤𝙥𝙨𝙞𝙨 𝙡𝙤𝙣𝙜𝙞𝙢𝙖𝙣𝙖 Agassiz, 1843 from the Upper Jurassic Solnhofen Archipelago (Tithonian, Germany) and the taxonomic diversity of 𝙎𝙖𝙪𝙧𝙤𝙥𝙨𝙞𝙨 Agassiz, 1832. Cooper & Maxwell (2026): buff.ly/BcryfRQ
#PalaeoSky

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@kkubo.bsky.socialSep 25, 2026, 10:12 AM

#fossilfriday
Our collaborative paper on a caudipterid oviraptorosaur's foot is now out! 🎉 You can read it here: doi.org/10.3897/sjp....

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@daverodland.bsky.socialSep 25, 2026, 9:56 AM

Gotcha covered. 😁 Needed to do something for #FossilFriday anyway, right? Right?

That meteorite thread is gonna take time, ngl ...

@daverodland.bsky.socialSep 25, 2026, 9:43 AM

By special request, we have Seven Dead Sins for #FossilFriday... we can debate their theological status, but in the immortal words of Dr. McCoy, they done shuffled off the mortal coil. Or something like. 🧪⚒️☠️

First up ... naah, who are we kidding? Sloth is never first to the party. Just wants hugs.

Replica: Megalonyx jeffersoni skull, a giant ground sloth.
@deathrevol.bsky.socialSep 25, 2026, 9:00 AM

Chancelade-mandible. 𝘏𝘰𝘮𝘰 𝘴𝘢𝘱𝘪𝘦𝘯𝘴. Upper Palaeolithic-Magdalenian. Chancelade- Dordogne, France. #FossilFriday


Courtesy of Musée d’Art et Archéologie du Périgord (Périgueux, France)

@erc.europa.eu CENIEH #FECYT

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@kkubo.bsky.socialSep 25, 2026, 8:23 AM

#FossilFriday
New paper about sub-arctometatarsus of early branching oviraptorid dinosaur!

A near-complete caudipterid pes from the Early Cretaceous Jehol Biota reveals insights into pedal anatomy and osteohistology of early oviraptorosaurs
sjp.pensoft.net/article/2074...

@susieoftraken.bsky.socialSep 25, 2026, 7:22 AM

A 60 million year old angiosperm leaf impression - Dryophyllum dewalquei - from Overbroek, Belgique.

On display in the Institut Royal des Sciences Naturelles de Belgique, Brussels.

#FossilFriday 🌏⚒🔬🌱🌳

A 60 million year old angiosperm leaf impression - Dryophyllum dewalquei - from Overbroek, Belgique.
@observethedate.bsky.socialSep 25, 2026, 6:40 AM

Friday

#FallFriday
#FashionFriday
#FaustianFriday
#FeatheredFriday
#FerrousFriday
#FictionFriday
#FindsFriday
#FingerpostFriday
#FishFriday
#FlowersOnFriday
#FolkWitchFriday
#FolkyFriday
#FollowFriday or #FF
#FontsOnFriday
#FootpathFriday
#FootwearFriday
#ForestFriday
#FossilFriday

@nhmbryozoa.bsky.socialSep 25, 2026, 6:20 AM

#FossilFriday Scanning electron micrograph of the cheilostome bryozoan Fenestrulina from the Miocene of North Canterbury, New Zealand. Visible at the centre is an ovicell in which larvae were once brooded, and to the right the coiled tube of a fouling spirorbid tubeworm.

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@tomsharperocks.bsky.socialSep 25, 2026, 6:03 AM

#FossilFriday: an ichthyosaur found by Charmouth fossilist Jonas Wishcombe and sold, in situ, to collector Thomas Hawkins who arranged its excavation in September 1833 and described it in his 1834 book Memoirs of Ichthyosauri and Plesiosauri. The specimen is now @nhm-london.bsky.social.

Left, 1834 illustration of an ichthyosaur skeleton (top) with the specimen itself (below); top right, photograph of Thomas Hawkins in a dark jacket, seated at a table; bottom right, extract from a newspaper of September 1833 reporting the recovery of the specimen: 'CHARMOUTH - A large fossil reptile of the antediluvian age was on Saturday last taken out of the blue lias, on Charmouth beach; it had bern previously told for four sovereigns to a member of the Geological society, and proved to be of the genus Icthyosaurus, partaking of the Alligator and Lizard species. It measured about six feet in length, and was only to be reached at extremely low tides, which may account for it not having been discovered before.'
@thedinosaurdave.bsky.socialSep 24, 2026, 8:20 PM

This week for #Fossilfriday we have another #Guess that #Lego #Fossil.

This one I would rate as medium. The holotype was found by a cook.

Reply your guesses and I will post the answer tomorrow.

This was designed by TheDinosaurDave.

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@doktrock.bsky.socialSep 24, 2026, 1:06 PM

"My first reaction was total disbelief" - Kent Hups, the high school teacher who discovered T. Rex dinosaur tracks in the Hell Creek Formation, in western North Dakota. #FossilFriday

@ehekkala.bsky.socialSep 21, 2026, 5:08 PM

Belated #FossilFriday from @theonion.com 🧪🦕🦖🌏

@paleojim.bsky.socialSep 19, 2026, 9:50 PM

Just a bit late for #fossilfriday, a comparison of some typical ankylosaur dorsal osteoderms from the Upper Jurassic through Lower Cretaceous of North America and Europe. Impressed at how distinct they are from each other. @utahpaleo-ufop.bsky.social @societyofvertpaleo.bsky.social

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@lostbones.bsky.socialSep 19, 2026, 3:18 AM

🐂For #FossilFriday I’m #CountingBones. The bison pelvis is one of the biggest bones in the skeleton — but in the Midwest museum and institutional collections I've visited, it almost never survives whole.

Out of 41 county and city institutions, only 10, all partial.

More: marcusbrandel.substack.com

Anoka County Historical Society partial Bison occidentalis pelvis.Melrose area Museum partial Bison pelvis.Saint Cloud State University partial bison pelvis.Science Museum of Minnesota partial bision pelves.
@fossilsndcoffee.bsky.socialSep 19, 2026, 2:21 AM

While thinking about arthropods at PRI, I'll also note that the eurypterid body pillows are back in stock and if you want one but aren't one of the 87 lucky folks who already had back orders or recent orders, its a good time to order! ⚒️🦑 #fossilfriday
pri-gift-shop.myshopify.com/collections/...