David Clark
@clarkeocrinus.bsky.social
I'd rather be crinoid hunting.
Invertebrate enthusiast, Paleo artist, Fossil prep, President of Friends of the University of Michigan Museum of Paleontology
Invertebrate enthusiast, Paleo artist, Fossil prep, President of Friends of the University of Michigan Museum of Paleontology
Pinned
David Clark
@clarkeocrinus.bsky.social
· Jul 31
All right, let's do this one last time.
My name is David Clark. I was bitten by a radioactive crinoid, and for 13 years I was on the bird site as clarkeocrinus.
I'm pretty sure you know the rest.
My name is David Clark. I was bitten by a radioactive crinoid, and for 13 years I was on the bird site as clarkeocrinus.
I'm pretty sure you know the rest.
Reposted by David Clark
I spent this #FossilFriday at Wadi al Hitan in Egypt, a UNESCO World Heritage Site where early whales like this Basilosaurus are hard to miss as they weather out of the Eocene Birket Qarun Formation. (Wadi al Hitan translates as "Valley of the Whales.")
January 30, 2026 at 8:56 PM
I spent this #FossilFriday at Wadi al Hitan in Egypt, a UNESCO World Heritage Site where early whales like this Basilosaurus are hard to miss as they weather out of the Eocene Birket Qarun Formation. (Wadi al Hitan translates as "Valley of the Whales.")
Reposted by David Clark
I recently had the wonderful opportunity to speak with the Che-Hanna Rock and Mineral Club and Inga Wells gifted me this lovely trilobite! Cryptolithus tesselatus from the Trenton Formation, Swatara Gap, PA. #FossilFriday
January 30, 2026 at 5:37 PM
I recently had the wonderful opportunity to speak with the Che-Hanna Rock and Mineral Club and Inga Wells gifted me this lovely trilobite! Cryptolithus tesselatus from the Trenton Formation, Swatara Gap, PA. #FossilFriday
Reposted by David Clark
Recall that Melissa Hortman and her husband were murdered not long ago by a fake cop who showed up at their door looking like this guy
This is from Georgia Fort’s video.
DEA?!? Gotta be a “task force.”
DEA?!? Gotta be a “task force.”
January 30, 2026 at 4:53 PM
Recall that Melissa Hortman and her husband were murdered not long ago by a fake cop who showed up at their door looking like this guy
This was another unlabeled piece, but I plan to search for an ID.
It's a very strange echinoderm with 4 swirling ridges to the mouth.
It feels like an Ordovician cystoid, but I really don't know.
I would love to hear if anyone has ideas.
#FossilFriday
It's a very strange echinoderm with 4 swirling ridges to the mouth.
It feels like an Ordovician cystoid, but I really don't know.
I would love to hear if anyone has ideas.
#FossilFriday
January 30, 2026 at 4:00 PM
This was another unlabeled piece, but I plan to search for an ID.
It's a very strange echinoderm with 4 swirling ridges to the mouth.
It feels like an Ordovician cystoid, but I really don't know.
I would love to hear if anyone has ideas.
#FossilFriday
It's a very strange echinoderm with 4 swirling ridges to the mouth.
It feels like an Ordovician cystoid, but I really don't know.
I would love to hear if anyone has ideas.
#FossilFriday
I usually stick to echinoderms, but this insect was so stunning.
This is a Cretaceous aged Neuropterid insect, Hemerobidae sp.
#FossilFriday
This is a Cretaceous aged Neuropterid insect, Hemerobidae sp.
#FossilFriday
January 30, 2026 at 3:53 PM
I usually stick to echinoderms, but this insect was so stunning.
This is a Cretaceous aged Neuropterid insect, Hemerobidae sp.
#FossilFriday
This is a Cretaceous aged Neuropterid insect, Hemerobidae sp.
#FossilFriday
This is another really cool trace fossil, but unfortunately there was no label, so I don't know where it's from.
There is a trilobite resting spot and at least two starfish trace fossils.
#FossilFriday
There is a trilobite resting spot and at least two starfish trace fossils.
#FossilFriday
January 30, 2026 at 3:48 PM
This is another really cool trace fossil, but unfortunately there was no label, so I don't know where it's from.
There is a trilobite resting spot and at least two starfish trace fossils.
#FossilFriday
There is a trilobite resting spot and at least two starfish trace fossils.
#FossilFriday
The label said this is a Pennsylvanian aged trilobite track from the Hale Formation of Arkansas.
I've never seen a trilobite or track from Pennsylvanian aged Arkansas. Trilobites would be extinct at the end of the Permian.
#FossilFriday
I've never seen a trilobite or track from Pennsylvanian aged Arkansas. Trilobites would be extinct at the end of the Permian.
#FossilFriday
January 30, 2026 at 3:46 PM
The label said this is a Pennsylvanian aged trilobite track from the Hale Formation of Arkansas.
I've never seen a trilobite or track from Pennsylvanian aged Arkansas. Trilobites would be extinct at the end of the Permian.
#FossilFriday
I've never seen a trilobite or track from Pennsylvanian aged Arkansas. Trilobites would be extinct at the end of the Permian.
#FossilFriday
I finally have a nice LeGrand crinoid piece.
This Mississippian aged site in Iowa is famous for crinoids with preserved color. The darker crinoid is Rhodocrinites kirbyi and the lighter one is Platycrinites symmetricus.
#FossilFriday
This Mississippian aged site in Iowa is famous for crinoids with preserved color. The darker crinoid is Rhodocrinites kirbyi and the lighter one is Platycrinites symmetricus.
#FossilFriday
January 30, 2026 at 3:41 PM
I finally have a nice LeGrand crinoid piece.
This Mississippian aged site in Iowa is famous for crinoids with preserved color. The darker crinoid is Rhodocrinites kirbyi and the lighter one is Platycrinites symmetricus.
#FossilFriday
This Mississippian aged site in Iowa is famous for crinoids with preserved color. The darker crinoid is Rhodocrinites kirbyi and the lighter one is Platycrinites symmetricus.
#FossilFriday
I picked up a few fossils from an old collection this week.
I need a timeline cleanse for #FossilFriday
Here it goes.
I need a timeline cleanse for #FossilFriday
Here it goes.
January 30, 2026 at 3:39 PM
I picked up a few fossils from an old collection this week.
I need a timeline cleanse for #FossilFriday
Here it goes.
I need a timeline cleanse for #FossilFriday
Here it goes.
Reposted by David Clark
Happy #FossilFriday how does a thread about the Inner Meadow biota and unexpected age for the fossils, and a refocusing of Martin Brasier’s #KotlinCrisis sound?
We’ve been trickling out our findings from Inner Meadow including #Charnia brasieri, #Aninoides and there's even cooler stuff in review. 🧵
We’ve been trickling out our findings from Inner Meadow including #Charnia brasieri, #Aninoides and there's even cooler stuff in review. 🧵
January 30, 2026 at 2:40 PM
Happy #FossilFriday how does a thread about the Inner Meadow biota and unexpected age for the fossils, and a refocusing of Martin Brasier’s #KotlinCrisis sound?
We’ve been trickling out our findings from Inner Meadow including #Charnia brasieri, #Aninoides and there's even cooler stuff in review. 🧵
We’ve been trickling out our findings from Inner Meadow including #Charnia brasieri, #Aninoides and there's even cooler stuff in review. 🧵
Reposted by David Clark
Finished this awesome mid-devonian Pterichthyodes "Ptessa" recently.
#achanarras #Scotland #fossilfish #notadinosaur #fossilfriday #Devonian #fossil #fossilpreparation
#achanarras #Scotland #fossilfish #notadinosaur #fossilfriday #Devonian #fossil #fossilpreparation
January 30, 2026 at 12:08 PM
Finished this awesome mid-devonian Pterichthyodes "Ptessa" recently.
#achanarras #Scotland #fossilfish #notadinosaur #fossilfriday #Devonian #fossil #fossilpreparation
#achanarras #Scotland #fossilfish #notadinosaur #fossilfriday #Devonian #fossil #fossilpreparation
Reposted by David Clark
MINNESOTA — Mom goes outside to warm up her car, ICE grabs her: "Please, my car kids are all alone in the house!”
So nothing has changed and Homan was just to put a new face on the cruelty, got it
(H/T longtimehistory)
So nothing has changed and Homan was just to put a new face on the cruelty, got it
(H/T longtimehistory)
January 30, 2026 at 2:43 AM
MINNESOTA — Mom goes outside to warm up her car, ICE grabs her: "Please, my car kids are all alone in the house!”
So nothing has changed and Homan was just to put a new face on the cruelty, got it
(H/T longtimehistory)
So nothing has changed and Homan was just to put a new face on the cruelty, got it
(H/T longtimehistory)
Reposted by David Clark
My 7yo daughter’s best friends’ family fled the country a few weeks ago. Today she came home with a drawing of her and another friend blowing whistles at ICE agents.
“We’re blowing the whistles and so ICE will go away and our friends can come back,” she said.
I started sobbing uncontrollably.
“We’re blowing the whistles and so ICE will go away and our friends can come back,” she said.
I started sobbing uncontrollably.
January 30, 2026 at 5:30 AM
My 7yo daughter’s best friends’ family fled the country a few weeks ago. Today she came home with a drawing of her and another friend blowing whistles at ICE agents.
“We’re blowing the whistles and so ICE will go away and our friends can come back,” she said.
I started sobbing uncontrollably.
“We’re blowing the whistles and so ICE will go away and our friends can come back,” she said.
I started sobbing uncontrollably.
Reposted by David Clark
democrats tell their base they cant do anything in the minority but the problem is we've had multiple instances over the last 20 years of watching republicans do shit while in the minority so we know the dems are full of it.
This is the crucial part. Republicans knew how to use their minority power. Democrats appear to be frittering it away.
January 29, 2026 at 2:46 PM
democrats tell their base they cant do anything in the minority but the problem is we've had multiple instances over the last 20 years of watching republicans do shit while in the minority so we know the dems are full of it.
They're all fucking cowards.
#GVerse So Republican Alabama Rep.Barry Moore held a town hall in Baldwin County where he was asked why immigrants aren’t getting due process & he said they aren’t allowed it & his constituents let him know he was full of crap & it’s a violation of the Constitution & he fled out the back
January 29, 2026 at 2:17 PM
They're all fucking cowards.
Reposted by David Clark
This machine yub nubs fascists.
January 29, 2026 at 4:13 AM
This machine yub nubs fascists.
Reposted by David Clark
Of the biggest scandals in US history just this week, I think I’d rank them:
1) Federal paramilitaries invade US city based on racist lies, murder US citizens
2) Slush fund for the president from stolen foreign resources held in Qatar
3) Whatever FBI and DNI are doing re: 2020 election in Georgia
1) Federal paramilitaries invade US city based on racist lies, murder US citizens
2) Slush fund for the president from stolen foreign resources held in Qatar
3) Whatever FBI and DNI are doing re: 2020 election in Georgia
January 29, 2026 at 2:52 AM
Of the biggest scandals in US history just this week, I think I’d rank them:
1) Federal paramilitaries invade US city based on racist lies, murder US citizens
2) Slush fund for the president from stolen foreign resources held in Qatar
3) Whatever FBI and DNI are doing re: 2020 election in Georgia
1) Federal paramilitaries invade US city based on racist lies, murder US citizens
2) Slush fund for the president from stolen foreign resources held in Qatar
3) Whatever FBI and DNI are doing re: 2020 election in Georgia
Reposted by David Clark
Dave Matthews and Tim Ryenolds playing Neil Young’s Ohio last night and ends with some Rage Against the Machine.
January 29, 2026 at 7:33 AM
Reposted by David Clark
There are the victims of ICE violence and then there are the people who have witnessed ICE violence, and I don’t think we’ve even begun to comprehend the layers and layers of trauma ICE has caused.
January 29, 2026 at 1:39 AM
There are the victims of ICE violence and then there are the people who have witnessed ICE violence, and I don’t think we’ve even begun to comprehend the layers and layers of trauma ICE has caused.
Reposted by David Clark
They really have no fucking idea what is coming. No fucking idea.
January 29, 2026 at 4:20 AM
They really have no fucking idea what is coming. No fucking idea.
Reposted by David Clark
"If we have to hunt you down, the way they hunted down Nazis for decades, we will find your identities. We will find you. We will achieve justice. And we will do so under the Constitution and laws of the United States."
www.youtube.com/watch?v=0Ft1...
www.youtube.com/watch?v=0Ft1...
Philly DA vows to prosecute ‘wannabe Nazi' ICE agents who violate the law
YouTube video by NBC10 Philadelphia
www.youtube.com
January 29, 2026 at 3:50 AM
"If we have to hunt you down, the way they hunted down Nazis for decades, we will find your identities. We will find you. We will achieve justice. And we will do so under the Constitution and laws of the United States."
www.youtube.com/watch?v=0Ft1...
www.youtube.com/watch?v=0Ft1...
Reposted by David Clark
Meet the MAZON CREEK MASTER! ⛏️
Paleontologist Arjan Mann’s research 📝 and passion 💕 for early vertebrates is perfect for his role at the Field Museum of Natural History in Chicago, Illinois, where he works with some of the most important fossil collections in the world. ⬇️ [THREAD]
Paleontologist Arjan Mann’s research 📝 and passion 💕 for early vertebrates is perfect for his role at the Field Museum of Natural History in Chicago, Illinois, where he works with some of the most important fossil collections in the world. ⬇️ [THREAD]
January 29, 2026 at 2:28 AM
Meet the MAZON CREEK MASTER! ⛏️
Paleontologist Arjan Mann’s research 📝 and passion 💕 for early vertebrates is perfect for his role at the Field Museum of Natural History in Chicago, Illinois, where he works with some of the most important fossil collections in the world. ⬇️ [THREAD]
Paleontologist Arjan Mann’s research 📝 and passion 💕 for early vertebrates is perfect for his role at the Field Museum of Natural History in Chicago, Illinois, where he works with some of the most important fossil collections in the world. ⬇️ [THREAD]
Reposted by David Clark
![3-panel comic. (1) [Three small arthropods on ocean floor.] ARTHROPOD 1: Now that we’re multicellular, what are your plans? I’m gonna evolve little legs and swim around with them! ARTHROPOD 2: I’m gonna evolve sharp pincers and use them to crunch stuff! ARTHROPOD 3: I’m gonna evolve glands to make string from my butt and use it to construct elaborate geometric nets hundreds of times my size to catch other animals. (2) [Silence] (3) ARTHROPOD 1: *Dude.* ARTHROPOD 2: Can you *please* just be normal about this? ARTHROPOD 3: *What??!*](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreia3p425asp237hjolbn5lly6g6hzm2eoygqjpkd5dii6zrwqnp7qi@jpeg)
January 28, 2026 at 7:57 PM
Reposted by David Clark
Scrolling through the photos of Pam Bondi's "Minnesota rioters," it's just hero after hero. Every photo includes a cowardly DHS agent with their back to the camera.
Bondi thinks she's going to win the propaganda war with this shit, but it's never been more clear that they're losing.
Bondi thinks she's going to win the propaganda war with this shit, but it's never been more clear that they're losing.
January 28, 2026 at 8:40 PM
Scrolling through the photos of Pam Bondi's "Minnesota rioters," it's just hero after hero. Every photo includes a cowardly DHS agent with their back to the camera.
Bondi thinks she's going to win the propaganda war with this shit, but it's never been more clear that they're losing.
Bondi thinks she's going to win the propaganda war with this shit, but it's never been more clear that they're losing.
Reposted by David Clark
How to Draw Sabretooth from X-Men.
Back in the studio. Here’s Wolverine’s arch nemesis, Sabretooth.
You can see the full drawing video in real time with commentary on my YouTube channel.
www.youtube.com/@frankchoartist
Enjoy, everyone.
Back in the studio. Here’s Wolverine’s arch nemesis, Sabretooth.
You can see the full drawing video in real time with commentary on my YouTube channel.
www.youtube.com/@frankchoartist
Enjoy, everyone.
January 12, 2026 at 1:42 AM
How to Draw Sabretooth from X-Men.
Back in the studio. Here’s Wolverine’s arch nemesis, Sabretooth.
You can see the full drawing video in real time with commentary on my YouTube channel.
www.youtube.com/@frankchoartist
Enjoy, everyone.
Back in the studio. Here’s Wolverine’s arch nemesis, Sabretooth.
You can see the full drawing video in real time with commentary on my YouTube channel.
www.youtube.com/@frankchoartist
Enjoy, everyone.