Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
@cambriancam.bsky.social
I am a science communicator and self-taught paleontologist/geologist located in Georgia. Future Invertebrate Paleontologist. I collect and study fossils from the Appalachian Basin.
Paleo Nerd 🦖🪨 ⚒️
Paleo Nerd 🦖🪨 ⚒️
#TrilobiteTuesday
Here is a beautifully enrolled Flexicalymene retrorsa trilobite from the Upper Ordovician Wayneville Formation (Cincinnatian Series) in Maimisburg, Ohio.
Here is a beautifully enrolled Flexicalymene retrorsa trilobite from the Upper Ordovician Wayneville Formation (Cincinnatian Series) in Maimisburg, Ohio.
January 6, 2026 at 4:37 PM
#TrilobiteTuesday
Here is a beautifully enrolled Flexicalymene retrorsa trilobite from the Upper Ordovician Wayneville Formation (Cincinnatian Series) in Maimisburg, Ohio.
Here is a beautifully enrolled Flexicalymene retrorsa trilobite from the Upper Ordovician Wayneville Formation (Cincinnatian Series) in Maimisburg, Ohio.
Here's a throwback video of me digging out a massive Exogyra ponderosa shell from the Cretaceous aged Demopolis Chalk in Tupelo, Mississippi.
(March 5th 2020)
(March 5th 2020)
January 5, 2026 at 3:14 PM
Here's a throwback video of me digging out a massive Exogyra ponderosa shell from the Cretaceous aged Demopolis Chalk in Tupelo, Mississippi.
(March 5th 2020)
(March 5th 2020)
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
B.S. Singer et al. (2025)
Radioisotopic age, osmium isotopes, and global correlation of the Albian-Cenomanian boundary
GSA Bulletin (advance online publication)
doi: doi.org/10.1130/B385...
pubs.geoscienceworld.org/gsa/gsabulle...
Radioisotopic age, osmium isotopes, and global correlation of the Albian-Cenomanian boundary
GSA Bulletin (advance online publication)
doi: doi.org/10.1130/B385...
pubs.geoscienceworld.org/gsa/gsabulle...
Radioisotopic age, osmium isotopes, and global correlation of the Albian-Cenomanian boundary | GSA Bulletin | GeoScienceWorld
doi.org
January 4, 2026 at 1:18 PM
B.S. Singer et al. (2025)
Radioisotopic age, osmium isotopes, and global correlation of the Albian-Cenomanian boundary
GSA Bulletin (advance online publication)
doi: doi.org/10.1130/B385...
pubs.geoscienceworld.org/gsa/gsabulle...
Radioisotopic age, osmium isotopes, and global correlation of the Albian-Cenomanian boundary
GSA Bulletin (advance online publication)
doi: doi.org/10.1130/B385...
pubs.geoscienceworld.org/gsa/gsabulle...
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
Weathering has revealed traces of Permian-Triassic sand dunes formed more than 200 million years ago
January 5, 2026 at 7:18 AM
Weathering has revealed traces of Permian-Triassic sand dunes formed more than 200 million years ago
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
X-ray Spectrometry! Love it. www.amnh.org/learn-teach/...
Zircon Chronology: Dating the Oldest Material on Earth | AMNH
The mineral zircon serves as a tiny time capsule, recording geologic events. The oldest discovered grains are almost as old as the Earth itself!
www.amnh.org
January 4, 2026 at 9:00 PM
X-ray Spectrometry! Love it. www.amnh.org/learn-teach/...
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
Note: Jack Hills zircons (probably too small to see individually in this pic) are up to 4.4 billion years old, but this rock is significantly younger. The zircons weathered out of the igneous rocks in which they formed, surviving heat and rain and pressure, and were incorporated into new(er) rocks.
January 5, 2026 at 12:00 AM
Note: Jack Hills zircons (probably too small to see individually in this pic) are up to 4.4 billion years old, but this rock is significantly younger. The zircons weathered out of the igneous rocks in which they formed, surviving heat and rain and pressure, and were incorporated into new(er) rocks.
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
Zircon crystals are nearly indestructible, and are some of the only things to survive the hellish pressure and heat of the Haldean Eon, when the earth was formed. The oldest zircons are found in Jack Hills, Australia, where our specimen was found. It may be small, but it's 4.4 billion years old!
January 4, 2026 at 7:59 PM
Zircon crystals are nearly indestructible, and are some of the only things to survive the hellish pressure and heat of the Haldean Eon, when the earth was formed. The oldest zircons are found in Jack Hills, Australia, where our specimen was found. It may be small, but it's 4.4 billion years old!
Welcome to the first #FossilFriday of 2026!
We kick off the new year with this beautiful colonial horn coral know as Acrocyathus floriformus. This specimen comes from the Middle Mississippian (Lower Carboniferous) St. Louis Limestone in Missouri.
We kick off the new year with this beautiful colonial horn coral know as Acrocyathus floriformus. This specimen comes from the Middle Mississippian (Lower Carboniferous) St. Louis Limestone in Missouri.
January 2, 2026 at 3:16 PM
Welcome to the first #FossilFriday of 2026!
We kick off the new year with this beautiful colonial horn coral know as Acrocyathus floriformus. This specimen comes from the Middle Mississippian (Lower Carboniferous) St. Louis Limestone in Missouri.
We kick off the new year with this beautiful colonial horn coral know as Acrocyathus floriformus. This specimen comes from the Middle Mississippian (Lower Carboniferous) St. Louis Limestone in Missouri.
Happy New year! Cheers to 2026 🍻
January 1, 2026 at 5:00 PM
Happy New year! Cheers to 2026 🍻
Welcome back to the last #TrilobiteTuesday of 2025.
Here is Neseuretus tristani. This specimen comes from the Middle Ordovician Traveusot Formation in France. The trilobite is highly deformed due to tectonic activity that built the French Mountains.
Here is Neseuretus tristani. This specimen comes from the Middle Ordovician Traveusot Formation in France. The trilobite is highly deformed due to tectonic activity that built the French Mountains.
December 30, 2025 at 4:30 PM
Welcome back to the last #TrilobiteTuesday of 2025.
Here is Neseuretus tristani. This specimen comes from the Middle Ordovician Traveusot Formation in France. The trilobite is highly deformed due to tectonic activity that built the French Mountains.
Here is Neseuretus tristani. This specimen comes from the Middle Ordovician Traveusot Formation in France. The trilobite is highly deformed due to tectonic activity that built the French Mountains.
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
I was able to get some holiday polishing done. This is Teepee Canyon Agate from South Dakota!
December 28, 2025 at 8:55 PM
I was able to get some holiday polishing done. This is Teepee Canyon Agate from South Dakota!
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
I don't think most Americans have any idea how dangerous it is for a president to declare an entire ethnic group to be "garbage." This is how the worst atrocities in human history have begun.
December 27, 2025 at 4:50 PM
I don't think most Americans have any idea how dangerous it is for a president to declare an entire ethnic group to be "garbage." This is how the worst atrocities in human history have begun.
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
Little wave ripples from the shore of the playa on the bottom of Panamint Valley today.⚒️
December 27, 2025 at 8:08 PM
Little wave ripples from the shore of the playa on the bottom of Panamint Valley today.⚒️
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
December 28, 2025 at 10:21 AM
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
Do you have a library card?
If the answer is YES! Please read on.
Could you please request that your local library add my children's books to their collection?
Available in paperback, hardcover, English, Espanol. #KidLit #ChildrensBooks #STEMBooks #RobotBooks NoireSTEMinist.com/childrensbooks
If the answer is YES! Please read on.
Could you please request that your local library add my children's books to their collection?
Available in paperback, hardcover, English, Espanol. #KidLit #ChildrensBooks #STEMBooks #RobotBooks NoireSTEMinist.com/childrensbooks
Diversity in STEM | NoireSTEMinist – United States
Explore NoireSTEMinist's initiatives led by Dr. Carlotta A. Berry in promoting diversity in STEM through innovative education and consulting.
NoireSTEMinist.com
December 27, 2025 at 12:30 PM
Do you have a library card?
If the answer is YES! Please read on.
Could you please request that your local library add my children's books to their collection?
Available in paperback, hardcover, English, Espanol. #KidLit #ChildrensBooks #STEMBooks #RobotBooks NoireSTEMinist.com/childrensbooks
If the answer is YES! Please read on.
Could you please request that your local library add my children's books to their collection?
Available in paperback, hardcover, English, Espanol. #KidLit #ChildrensBooks #STEMBooks #RobotBooks NoireSTEMinist.com/childrensbooks
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
On the 8th day of fossils, my true love gave to me...
8 Hyperoblastus blastoids from Milan, Michigan.
Blastoids are echinoderms related to starfish, sea urchins and crinoids. At some localities they are common. They are very rare at the Devonian Silica Shale Milan location.
#12DaysofFossils
8 Hyperoblastus blastoids from Milan, Michigan.
Blastoids are echinoderms related to starfish, sea urchins and crinoids. At some localities they are common. They are very rare at the Devonian Silica Shale Milan location.
#12DaysofFossils
December 26, 2025 at 4:20 PM
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
But wait! There's more! It's also #InverteFest and I didn't tag the bugs in amber. Or the barnacle. So here's some Ohio invertebrates tucked away in a corner of the COSI Oceans exhibit.
December 26, 2025 at 10:34 PM
But wait! There's more! It's also #InverteFest and I didn't tag the bugs in amber. Or the barnacle. So here's some Ohio invertebrates tucked away in a corner of the COSI Oceans exhibit.
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
#FossilFriday Wiped out from delivering presents, little Cambrian arthropod Sanctacaris (aka "Santa Claws") takes a very long (508 million year) rest. Specimen at @romtoronto.bsky.social
December 26, 2025 at 1:36 PM
#FossilFriday Wiped out from delivering presents, little Cambrian arthropod Sanctacaris (aka "Santa Claws") takes a very long (508 million year) rest. Specimen at @romtoronto.bsky.social
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
#FossilFriday Fine specimen of the problematical fossil Dickinsonia costata from the Ediacaran. On display at the South Australia Museum, Adelaide.
December 26, 2025 at 8:23 AM
#FossilFriday Fine specimen of the problematical fossil Dickinsonia costata from the Ediacaran. On display at the South Australia Museum, Adelaide.
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
A recumbent #FridayFold that appears to be soft sediment deformation, in a cliff above the valley of the Amargosa River downstream from China Ranch. I guess these must be Miocene-aged "China Ranch Beds" but I wasn't able to find out more about the geology. If anyone knows, please enlighten me. ⚒️
December 26, 2025 at 2:46 PM
A recumbent #FridayFold that appears to be soft sediment deformation, in a cliff above the valley of the Amargosa River downstream from China Ranch. I guess these must be Miocene-aged "China Ranch Beds" but I wasn't able to find out more about the geology. If anyone knows, please enlighten me. ⚒️
#FossilFriday
Here is the sponge Astraeospongium meniscus that I found in the Upper Silurian Brownsport Group in Hardin, Tennessee. You can see star-shaped Spicuels. They are made up of Calcium carbonate and serve as the "skeleton" or support structure for the sponge.
Here is the sponge Astraeospongium meniscus that I found in the Upper Silurian Brownsport Group in Hardin, Tennessee. You can see star-shaped Spicuels. They are made up of Calcium carbonate and serve as the "skeleton" or support structure for the sponge.
December 26, 2025 at 3:24 PM
#FossilFriday
Here is the sponge Astraeospongium meniscus that I found in the Upper Silurian Brownsport Group in Hardin, Tennessee. You can see star-shaped Spicuels. They are made up of Calcium carbonate and serve as the "skeleton" or support structure for the sponge.
Here is the sponge Astraeospongium meniscus that I found in the Upper Silurian Brownsport Group in Hardin, Tennessee. You can see star-shaped Spicuels. They are made up of Calcium carbonate and serve as the "skeleton" or support structure for the sponge.
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
On the 11th day of fossils, my true love gave to me...
11 Cambrian fossils from the Great Basin.
The Great Basin is a large area of Utah and Nevada that was under water 500 million years ago. Life was experimenting and there's lots of strange creatures found here.
1/x
#12DaysofFossils
11 Cambrian fossils from the Great Basin.
The Great Basin is a large area of Utah and Nevada that was under water 500 million years ago. Life was experimenting and there's lots of strange creatures found here.
1/x
#12DaysofFossils
December 24, 2025 at 11:03 PM
On the 11th day of fossils, my true love gave to me...
11 Cambrian fossils from the Great Basin.
The Great Basin is a large area of Utah and Nevada that was under water 500 million years ago. Life was experimenting and there's lots of strange creatures found here.
1/x
#12DaysofFossils
11 Cambrian fossils from the Great Basin.
The Great Basin is a large area of Utah and Nevada that was under water 500 million years ago. Life was experimenting and there's lots of strange creatures found here.
1/x
#12DaysofFossils
#TrilobiteTuesday
Here is Dalmanities limulurus from the Lower Silurian Rochester Shale from Middleport, New York State. The Rochester Shale is one of the most famous silurian fossil sites in the US. Fossils were first recognized when the Erie Canal was first being built in 1817-1825.
Here is Dalmanities limulurus from the Lower Silurian Rochester Shale from Middleport, New York State. The Rochester Shale is one of the most famous silurian fossil sites in the US. Fossils were first recognized when the Erie Canal was first being built in 1817-1825.
December 23, 2025 at 5:38 PM
#TrilobiteTuesday
Here is Dalmanities limulurus from the Lower Silurian Rochester Shale from Middleport, New York State. The Rochester Shale is one of the most famous silurian fossil sites in the US. Fossils were first recognized when the Erie Canal was first being built in 1817-1825.
Here is Dalmanities limulurus from the Lower Silurian Rochester Shale from Middleport, New York State. The Rochester Shale is one of the most famous silurian fossil sites in the US. Fossils were first recognized when the Erie Canal was first being built in 1817-1825.
Reposted by Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)
Virginia Zurriaguz and Mauricio A. Cerroni (2025)
Postcranial pneumaticity in abelisaurids (Dinosauria: Theropoda): the cases of Tralkasaurus cuyi, Skorpiovenator bustingorryi and Carnotaurus sastrei
Ameghiniana (advance online publication)
www.ameghiniana.org.ar/index.php/am...
Postcranial pneumaticity in abelisaurids (Dinosauria: Theropoda): the cases of Tralkasaurus cuyi, Skorpiovenator bustingorryi and Carnotaurus sastrei
Ameghiniana (advance online publication)
www.ameghiniana.org.ar/index.php/am...
www.ameghiniana.org.ar
December 21, 2025 at 3:38 PM
Virginia Zurriaguz and Mauricio A. Cerroni (2025)
Postcranial pneumaticity in abelisaurids (Dinosauria: Theropoda): the cases of Tralkasaurus cuyi, Skorpiovenator bustingorryi and Carnotaurus sastrei
Ameghiniana (advance online publication)
www.ameghiniana.org.ar/index.php/am...
Postcranial pneumaticity in abelisaurids (Dinosauria: Theropoda): the cases of Tralkasaurus cuyi, Skorpiovenator bustingorryi and Carnotaurus sastrei
Ameghiniana (advance online publication)
www.ameghiniana.org.ar/index.php/am...