#Stromatolites
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xkcd.com
Stromatolites xkcd.com/3046
February 4, 2025 at 2:47 AM
callanbentley.bsky.social
Stromatolites within the Helena formation, Belt supergroup, Glacier National Park. ⚒️
Callan smiles in front of a wall of stomatolites. A vertical exposure through some stromatolites Two big fat 3D stromatolites spalling off their outermost layers A bedding plane of 3D stromatolites with a gorgeous set of mountains and pater noster lakes in the distance
July 18, 2024 at 1:18 PM
arctomet.bsky.social
#FossilFriday (or at least #BiologicallyMediatedSedimentaryStructureFriday) One of the North Pole Dome, Australia, Paleoarchean stromatolites
January 2, 2026 at 1:51 PM
bedform.org
Stromatolites! In 3D!

Paleoproterozoic Nash Fork Formation in the Snowy Range, WY

skfb.ly/pzFB8
July 30, 2025 at 8:13 PM
aberrantologist.bsky.social
Hupehsuchus does... whatever by some stromatolites.
May 2, 2026 at 2:59 AM
daverodland.bsky.social
#FossilFriday falls with the creeping inevitability of a global glaciation. These Proterozoic stromatolites from Minnesota's Iron Ranges stand as a reminder that, no matter how small we are alone, together we can change the world, making complex relationships possible like a breath of fresh air. 🧪⚒️
Digitate stromatolites in red chert. Label: "Algal structures Animkien - Precambrian Mesabi Range, Minnesota"
February 6, 2026 at 10:28 PM
madair336.bsky.social
Low water levels on the Ottawa River exposes things
Stromatolites visible in the river bed Stromatolites and bidders visible in the river bed A sculpture stop a large sewer pipe in a drained trench Sewer pipe visible in a drained trench
October 3, 2026 at 7:28 PM
korybing.bsky.social
When @restingdinoface.bsky.social asked me to draw stromatolites for When the Earth Was Green I got REAL excited because I was like "JUST LIKE IN LIFE ON EARTH" because of course that was the first place I ever saw or heard of them.
Black and white illustration of stromatolites in water, as seen in When The Earth Was Green by Riley Black. David Attenborough in Life on Earth walking across stromatolites in Australia
May 29, 2025 at 8:59 PM
callanbentley.bsky.social
Some stromatolites to get your Saturday started. El Paso Formation (Ordovician; roadcut along Scenic Drive in El Paso) ⚒️
Two @~15 cm wide, ~20 cm tall stromatolites in gray limestone. Fingers for scale. Petite ~1.5 cm wide, ~3 cm tall stromatolite in gray + tan limestone. Fingers for scale. Two @~5 cm wide, ~10 cm tall stromatolites in gray limestone. Fingers for scale.
October 18, 2025 at 11:18 AM
smmnh.bsky.social
Stromatolites are fossil evidence of some of the earliest forms of life on earth, and some can be up to 3.45 billion years old! Stromatolites are formed when blankets of photosynthetic single-celled micro-organisms "cement" surrounding sediment in slowly growing layers.
Stromatolites are fossil evidence of some of the earliest forms of life on earth, and some can be up to 3.45 billion years old! Stromatolites are formed when blankets of photosynthetic single-celled micro-organisms "cement" surrounding sediment in slowly growing layers.
August 14, 2026 at 6:59 PM
callanbentley.bsky.social
Am arête made of stromatolites today in Glacier National Park, Montana ⚒️
Student standing atop a stromatolitic bedding plane that varies in width from 20 feet to 5 feet Three stromatolite domes, shoe for acale A half dozen stromatolites with a hand for scale
July 17, 2025 at 2:52 AM
dsyzdek.bsky.social
Shark Bay is pretty spectacular, and you can see dugongs there. And the stromatolites are great too. (I've seen stromatolites in Cuatrociengas, Mexico too.)

My photos of Shark Bay stromatolites by drone.
Stromatolites from above. Clear water is almost invisible, strangely shaped brown blobs are visible. Stromatolites from above. Clear water is almost invisible, strangely shaped brown blobs are visible. Deeper water and waves in the distance. large area of Stromatolites. Stromatolites from above. Clear water is almost invisible, strangely shaped brown blobs are visible and are small compared to a damaged boardwalk. Stromatolites from above. Clear water is almost invisible, mostly round dark blobs here. More sand visible.
March 13, 2026 at 8:33 PM
callanbentley.bsky.social
Stromatolinos
⚒️
Callan's hand provides a sense of scale to a cluster of ~1" diameter stromatolites.
July 16, 2026 at 11:54 PM
jackstack.bsky.social
Stromatolites once ruled this world...
Really cooked meme of stromatolites realizing they are on the planet they once were the dominant form of life on.
June 3, 2026 at 2:03 PM
speciationlab.bsky.social
must do adjacents:
rottnest island, stromatolites
quokkas!! Stromatolites stretch into the distance
March 13, 2026 at 7:25 PM
nilbog3000.bsky.social
The history of life on earth is billions of years of stromatolites and then a couple short lived fads that came and went. Smart money is on the stromatolites.
March 30, 2024 at 6:09 AM
tine5.bsky.social
Theme: Cotham #marble showing fossilised stromatolites.
#pixelart #pixel_dailies #paleoart
@pixeldailies.bsky.social
Pixel art of Cotham Marble, a sandy and greyish slab with dark grey and blackish lumpy and feathery fossilised stromatolites, a type of bacteria, which formed in shallow seas in the UK 205 million years ago.
January 9, 2026 at 5:01 PM
shingworks.com
wtf, there's stromatolites in California? in Anza Borrego Desert State Park, located not 2 hours from my present locale? amazing
Picture of stromatolites of Anza Borrego Desert State Park that i ganked from a paper
November 8, 2024 at 3:10 AM
laskinator.bsky.social
Speaking of getting while the getting's good: the River is really low right now, if you want to check out the stromatolites by Champlain Bridge, now's your chance.
#OttRocks #geology
September 30, 2026 at 1:44 AM
smmnh.bsky.social
Stromatolites are fossil evidence of some of the earliest forms of life on earth, and some can be up to 3.45 billion years old! Stromatolites are formed when blankets of photosynthetic single-celled micro-organisms "cement" surrounding sediment in slowly growing layers.
Stromatolites are fossil evidence of some of the earliest forms of life on earth, and some can be up to 3.45 billion years old! Stromatolites are formed when blankets of photosynthetic single-celled micro-organisms "cement" surrounding sediment in slowly growing layers.
April 12, 2026 at 6:59 PM
funranium.bsky.social
I’m pretty sure those stromatolites FUCK. Phwoarrrr
mimulus.bsky.social Rick Hollon @mimulus.bsky.social · Mar 21
No sex. No language. No thoughts. Just drifting in the warm Precambrian sea, nothing but mitosis and vibes.
March 28, 2024 at 3:03 AM
spacewhalerider.com
THESE GUYS
Shark Bay stromatolites
August 6, 2026 at 12:41 PM
kerrieneet.bsky.social
OK, time for a #geonerd shot!This is a great example of stromatolites in the Neoproterozoic ~750 Ma Chuar Group in the #GrandCanyon. Stromatolites are preserved ancient algal mats.

#geology #NationalParks #wildplaces #publiclands
December 29, 2024 at 2:57 PM
callanbentley.bsky.social
Stromatolites, Nova Scotia style, on display at the Fundy Geological Museum in Parrboro. ⚒️
Layered mound like microbial mata in both bedding plane perpendicular and parallel cross sections
July 23, 2026 at 9:44 PM
arctomet.bsky.social
xkcd.com/3046/
Stromatolites
xkcd.com
February 4, 2025 at 5:15 PM