Top Tweets for #Cambrianexplosion

B's having the most fun @HopefulB2020

19 days ago

Learn from a Bench! Time to get moving with your favorite Ediacaran Weirdies! #EdiacaranBiota lived for over 60 million years before the #CambrianExplosion (538.8 ish Mya) & have body plans so different than those that exist today...1/4 #BenchFacts #Science

HopefulB2020's tweet photo. Learn from a Bench! Time to get moving with your favorite Ediacaran Weirdies! #EdiacaranBiota lived for over 60 million years before the #CambrianExplosion (538.8 ish Mya) & have body plans so different than those that exist today...1/4 #BenchFacts #Science https://t.co/7y9jcSM6qo

Stefan F. Wirth

@wirthstef

6 months ago

Please watch my newest #animated #YouTube #video about the #Cambrianexplosion https://t.co/h3GE0BgDj2 It was a very #shortperiod in Earth's history, began ca. 541 million years ago and lasted only ~13-25 million years, during which giant #evolutionary leaps occurred in #animals. I.a.under influence of increased #oxygen levels, #Bilateria, primeval #Protostomia and #Deuterostomia evolved. We Tetrapoda much later derived from the latter. Much is discussed about the dangers of the ever-improving and expanding #applications of #AI. Some envision artificial intelligence as a close confidant and personal advisor, while others fear for the future of human jobs. However, using AI to support #creativework is, for me, a long-awaited advancement, extending my activity spectrum in the fields of scientific #illustrations, general visualisations, #storyboarding and art. While creating a storyboard, animating video sequences, and then editing and adding sound to a film is a considerable amount of work, the ability to transform landscapes and scenes that initially existed only in my mind into moving images in "just" some days represents a significant technological leap. My short animated documentary was largely animated using Adobe Firefly. I edited and cut it using Premiere. Pictures were edited with Lightroom and Photoshop. ©#StefanFWirth 2025 #Illustrations 1) sponge like #Archaeocyatha, here with algae cover, algae as most important oxygen providers in the early Cambrian 2) sponge like Archaeocyatha and their #calcium based skeletons, skeletons were important new innovations during the Cambrian Explosion 3) #Trilobita as examples for #bilateralsymmetry and primeval #Arthropoda 4) #sun with sun eruptions, according to very recent research findings,a changed Earth's orbit caused a different sun radiation that was leading to weathering effects on land and thus provided a nutrient flow to the ocean, stimulating #algae growth and their oxygen producing #photosynthesis activities. © All illustrations: S. F. Wirth,#AIassisted own work

wirthstef's tweet photo. Please watch my newest #animated #YouTube #video about the #Cambrianexplosion
https://t.co/h3GE0BgDj2

It was a very #shortperiod in Earth's history, began ca. 541 million years ago and lasted only ~13-25 million years, during which giant #evolutionary leaps occurred in #animals. I.a.under influence of increased #oxygen levels, #Bilateria, primeval #Protostomia and #Deuterostomia evolved. We Tetrapoda much later derived from the latter.

Much is discussed about the dangers of the ever-improving and expanding #applications of #AI. Some envision artificial intelligence as a close confidant and personal advisor, while others fear for the future of human jobs. However, using AI to support #creativework is, for me, a long-awaited advancement, extending my activity spectrum in the fields of scientific #illustrations, general visualisations, #storyboarding and art. While creating a storyboard, animating video sequences, and then editing and adding sound to a film is a considerable amount of work, the ability to transform landscapes and scenes that initially existed only in my mind into moving images in "just" some days represents a significant technological leap. My short animated documentary was largely animated using Adobe Firefly. I edited and cut it using Premiere. Pictures were edited with Lightroom and Photoshop.

©#StefanFWirth 2025

#Illustrations
1) sponge like #Archaeocyatha, here with algae cover, algae as most important oxygen providers in the early Cambrian
2) sponge like Archaeocyatha and their #calcium based skeletons, skeletons were important new innovations during the Cambrian Explosion
3) #Trilobita as examples for #bilateralsymmetry and primeval #Arthropoda
4) #sun with sun eruptions, according to very recent research findings,a changed Earth's orbit caused a different sun radiation that was leading to weathering effects on land and thus provided a nutrient flow to the ocean, stimulating #algae growth and their oxygen producing #photosynthesis activities.

© All illustrations: S. F. Wirth,#AIassisted own work

283

Stefan F. Wirth

@wirthstef

6 months ago

The #CambrianExplosion, a rather abrupt surge in the #evolution of higher #organisms, began in the early #Cambrian period around 541 million years ago and lasted for only about 13 until 25 million years. This article summarizes the evolutionary steps during this time. In particular, a very recent scientific #study is introduced, which suggests that altered #solarradiation led to an increase in #oxygen levels on Earth and in the #ocean. The Cambrian Explosion is so named not only because a diverse array of multicellular organisms evolved within a remarkably short period of up to 25 million years, but also because it brought about significant leaps in the phylogenetic tree of animals. #Sponges and #cnidarians evolved, and from this lineage, the bilaterally symmetrical animals (#Bilateria) developed. Primeval #protostomes, such as some #Arthropoda, as well as #primeval #deuterostomes, including the echinoderms (#Echinodermata), also #evolved. Well-known organisms classified as Arthropoda include #Anomalocaris and the #trilobites. Anomalocaris was a predator that grew up to 120 cm long and is difficult to precisely place in the cladogram of Arthropoda, while trilobites are mostly classified as belonging to the early ancestral lineage of the #Chelicerata (spider-related major clade). Early deuterostomes within the Echinodermata are for example Crinoidea, which include the sea lilies. Research does not assume that Cambrian evolution is due to an artifactual fossil record, i.e., that fossils survived in closely spaced sediments over a significantly longer period of time only by chance, but rather research considers the remarkably short Cambrian Explosion to be a real event based on multiple pieces of evidence. As an #evolutionarybiologist and #paleontologist, one must naturally ask what might have triggered such a massive radiation of evolution (including in the algae plant kingdom). The following factors, for example, are considered responsible: the oxygen content in the Earth's atmosphere and oceans increased significantly. Furthermore, #calcium-containing compounds in the oceans increased, enabling the evolution of hard skeletal elements in sponges, corals, arthropods, and e.g. echinoderms. Initially, these skeletons likely served to excrete excess calcium from tissues. However, calcareous skeletons then allowed animals to modify their environment, for example, by burrowing through the ocean floor in search of food. This resulted in a more complex structure of the seabed, providing a greater number of ecological licenses, which in turn enabled a wider range of #speciation processes. The evolutionary "invention" of #bilaterally #symmetrical animals was a key feature that allowed animals to use directed locomotion. This enabled enormous evolutionary leaps. In their recent study, Y. Zhang et al. (2025) presented a hypothesis to explain why the oxygen content on Earth, which formed an important basis for the Cambrian Explosion, could increase so suddenly. According to the researchers' model, Earth's orbit around the sun changed. The resulting change in solar radiation is thought to have accelerated #weathering processes on land, leading to an increase in nutrients entering the oceans. These nutrients, in turn, promoted plant life, which then exhibited greater photosynthetic activity. This significantly increased the oxygen content, which occurred during a #period when important prerequisites for the radiation of organisms were already in place. © #StefanFWirth Berlin December 2025 Reference: Y. Zhang et al. (2025): https://t.co/KgaQDAIoXK Illustrations: © Stefan F. Wirth, December 2025 I created these illustrations with AI assistance (Adobe Firefly) and modified and edited the pictures. 1) artistic #illustration of animal forms that evolved during Kambrian explosion with undefined early arthropods and cnidarians, ocean and sun radiation 2) Calcium skeletons of sponge like #Archaeocyatha 3) Anomalocaris 4) Trilobites

wirthstef's tweet photo. The #CambrianExplosion, a rather abrupt surge in the #evolution of higher #organisms, began in the early #Cambrian period around 541 million years ago and lasted for only about 13 until 25 million years. This article summarizes the evolutionary steps during this time. In particular, a very recent scientific #study is introduced, which suggests that altered #solarradiation led to an increase in #oxygen levels on Earth and in the #ocean.

The Cambrian Explosion is so named not only because a diverse array of multicellular organisms evolved within a remarkably short period of up to 25 million years, but also because it brought about significant leaps in the phylogenetic tree of animals. #Sponges and #cnidarians evolved, and from this lineage, the bilaterally symmetrical animals (#Bilateria) developed. Primeval #protostomes, such as some #Arthropoda, as well as #primeval #deuterostomes, including the echinoderms (#Echinodermata), also #evolved. Well-known organisms classified as Arthropoda include #Anomalocaris and the #trilobites. Anomalocaris was a predator that grew up to 120 cm long and is difficult to precisely place in the cladogram of Arthropoda, while trilobites are mostly classified as belonging to the early ancestral lineage of the #Chelicerata (spider-related major clade). Early deuterostomes within the Echinodermata are for example Crinoidea, which include the sea lilies.

Research does not assume that Cambrian evolution is due to an artifactual fossil record, i.e., that fossils survived in closely spaced sediments over a significantly longer period of time only by chance, but rather research considers the remarkably short Cambrian Explosion to be a real event based on multiple pieces of evidence.
As an #evolutionarybiologist and #paleontologist, one must naturally ask what might have triggered such a massive radiation of evolution (including in the algae plant kingdom). The following factors, for example, are considered responsible: the oxygen content in the Earth's atmosphere and oceans increased significantly. Furthermore, #calcium-containing compounds in the oceans increased, enabling the evolution of hard skeletal elements in sponges, corals, arthropods, and e.g. echinoderms. Initially, these skeletons likely served to excrete excess calcium from tissues. However, calcareous skeletons then allowed animals to modify their environment, for example, by burrowing through the ocean floor in search of food. This resulted in a more complex structure of the seabed, providing a greater number of ecological licenses, which in turn enabled a wider range of #speciation processes.

The evolutionary "invention" of #bilaterally #symmetrical animals was a key feature that allowed animals to use directed locomotion. This enabled enormous evolutionary leaps.

In their recent study, Y. Zhang et al. (2025) presented a hypothesis to explain why the oxygen content on Earth, which formed an important basis for the Cambrian Explosion, could increase so suddenly. According to the researchers' model, Earth's orbit around the sun changed. The resulting change in solar radiation is thought to have accelerated #weathering processes on land, leading to an increase in nutrients entering the oceans. These nutrients, in turn, promoted plant life, which then exhibited greater photosynthetic activity. This significantly increased the oxygen content, which occurred during a #period when important prerequisites for the radiation of organisms were already in place.

© #StefanFWirth Berlin December 2025

Reference:

Y. Zhang et al. (2025):
https://t.co/KgaQDAIoXK

Illustrations:
© Stefan F. Wirth, December 2025
I created these illustrations with AI assistance (Adobe Firefly) and modified and edited the pictures.
1) artistic #illustration of animal forms that evolved during Kambrian explosion with undefined early arthropods and cnidarians, ocean and sun radiation
2) Calcium skeletons of sponge like #Archaeocyatha
3) Anomalocaris
4) Trilobites

253

Andrea Baucon @ABaucon

7 months ago

🌊 Trilobites appeared abruptly in the Cambrian, ruling the oceans until their extinction at the end of the Permian. Tag someone who NEEDS to see this trilobite tale! #CambrianExplosion #PermianExtinction #OceanDominators

ABaucon's tweet photo. 🌊 Trilobites appeared abruptly in the Cambrian, ruling the oceans until their extinction at the end of the Permian. Tag someone who NEEDS to see this trilobite tale! #CambrianExplosion #PermianExtinction #OceanDominators https://t.co/y3za8QYEwo

Crow's Nest

@CrowsNest2023

7 months ago

The grand puzzle of the Cambrian explosion surely must rank as one of the most important outstanding mysteries in evolutionary biology. ~Christopher J. Lowe~ #PaulKChien Biology's Big Bang: The Cambrian Explosion 📖 ©2024 #Fossils #CambrianExplosion #Evolution

CrowsNest2023's tweet photo. The grand puzzle of the Cambrian explosion surely must rank as one of the most important outstanding mysteries in evolutionary biology.
~Christopher J. Lowe~

#PaulKChien

Biology's Big Bang: The Cambrian Explosion
📖 ©2024

#Fossils
#CambrianExplosion
#Evolution https://t.co/xlKGbtv0pB

Andrea Baucon @ABaucon

9 months ago

🌊 Vertebrates appeared about 520 million years ago during the Cambrian explosion. This event marked a significant rise in animal diversity. While the fossil vertebrates depicted in the images are much younger, which one do you like the most? #CambrianExplosion #AncientOceans

ABaucon's tweet photo. 🌊 Vertebrates appeared about 520 million years ago during the Cambrian explosion. This event marked a significant rise in animal diversity.

While the fossil vertebrates depicted in the images are much younger, which one do you like the most?

#CambrianExplosion #AncientOceans https://t.co/YAc52ldG3e

148

💥 ClimatePoet 💥 @ClimatePoet

9 months ago

@ValkDonnerhund @Kenneth72712993 @AlfSmith1972 @PLURguy87 @ADevotedYogi Yep. We'd have another #CambrianExplosion if CO2 levels reached 4000 - 7000 PPM again Earth has greened 30% since the 1990s CO2's been a boon to the Earth But prosperity is something Doomsday Marxist Maggots don't want. They want Energy Poverty for all https://t.co/Yps5wgKOO1

💥 ClimatePoet 💥 @ClimatePoet

9 months ago

@CO2Coalition Look at the CO2 levels during the #CambrianExplosion!!! LOL Scientifically, the more CO2, the better it is for the biosphere and all of life. Bring on the CO2!

ClimatePoet's tweet photo. @CO2Coalition Look at the CO2 levels during the #CambrianExplosion!!! LOL

Scientifically, the more CO2, the better it is for the biosphere and all of life.

Bring on the CO2! https://t.co/6bP84Yznq7

734

387

💥 ClimatePoet 💥 @ClimatePoet

9 months ago

@CO2Coalition Look at the CO2 levels during the #CambrianExplosion!!! LOL Scientifically, the more CO2, the better it is for the biosphere and all of life. Bring on the CO2!

734

haslet hünler @haslethunler

10 months ago

This is not just a story about AI. It’s a story about the evolution of science itself. 🌌 The Cambrian Explosion has already begun. → Are you ready to be part of it? 🚀 #CambrianExplosion #BioAgents #AIforScience @BioProtocol #BioAgents #bioprotocol

haslethunler's tweet photo. This is not just a story about AI.
It’s a story about the evolution of science itself. 🌌
The Cambrian Explosion has already begun.
→ Are you ready to be part of it? 🚀
#CambrianExplosion #BioAgents #AIforScience
@BioProtocol #BioAgents #bioprotocol https://t.co/X3TN00o4Pm

Geology Bits of Knowledge

@geologyBits

11 months ago

In Geology ✔️ Mineralogy - Botany #Paleontology #CambrianExplosion #GrandCanyon #FossilDiscovery 🚨 Breaking: "Current News in Geology" 🔁 Unearthing Ancient Predators: Cambridge Researchers Discover 500-Million-Year-Old Penis Worm Fossils in Grand Canyon ▶️ Imagine a world where bizarre, spiky-mouthed worms ruled the ancient seas. Researchers from the University of Cambridge have uncovered hundreds of tiny "penis worm" fossils in Arizona’s Grand Canyon, revealing a vibrant ecosystem from 500 million years ago that challenges our understanding of early life. ▶️ Formation Story In a groundbreaking 2023 expedition along the Colorado River, Cambridge researchers, led by PhD student Giovanni Mussini, collected rock samples from the Grand Canyon’s Bright Angel Formation. These 500 million year old mudstone layers, dating to the Cambrian period (507–502 million years ago), preserved a treasure trove of soft-bodied fossils. By dissolving rocks in hydrofluoric acid and sifting through sediment, the team uncovered over 1,500 microscopic remains, including a newly identified priapulid species named Kraytdraco spectatus, inspired by its resemblance to a Star Wars krayt dragon. These fossils featuring complex branching teeth, offer a rare glimpse into the feeding habits and evolutionary adaptations of early marine animals. ▶️ Geological Information The Bright Angel Formation, where these fossils were found, is a layer of fine-grained mudstone formed in a shallow, oxygen-rich sea near the equator during the Cambrian period. At that time the Grand Canyon region was submerged under a warm, nutrient-rich ocean, approximately 130–165 feet deep. This "Goldilocks zone" provided ideal conditions, abundant sunlight for photosynthetic microbes, high oxygen levels, and minimal wave disturbance, fostering rapid evolutionary innovation. The muddy seafloor acted as a natural preservative, rapidly burying soft-bodied organisms and preventing decay, a rare occurrence given that such environments typically favor decomposition over fossilization. This exceptional preservation allowed researchers to study intricate details, such as the worms’ tooth-lined, extensible mouths, revealing their role as voracious predators in a competitive ecosystem. ▶️ Interesting Fact The Kraytdraco spectatus penis worm, with its hundreds of branching teeth, could turn its mouth inside out to sweep up debris and filter food, resembling a living cheese grater. This sophisticated feeding mechanism highlights the complexity of Cambrian life, showing that even tiny creatures were evolving bold strategies to thrive in a crowded ancient ocean. 🔎 What do you think life was like in the Cambrian seas 500 million years ago? 🔁 Like & Share your thoughts on how these bizarre creatures shaped the evolution of life on Earth! 🎞️ 505-Million-Year-Old Grand Canyon Fossils Reveal Evolution's Wild Side https://t.co/zpQ1pykrwb

geologyBits's tweet photo. In Geology ✔️ Mineralogy - Botany
#Paleontology #CambrianExplosion #GrandCanyon #FossilDiscovery

🚨 Breaking: "Current News in Geology"

🔁 Unearthing Ancient Predators: Cambridge Researchers Discover 500-Million-Year-Old Penis Worm Fossils in Grand Canyon

▶️ Imagine a world where bizarre, spiky-mouthed worms ruled the ancient seas.

Researchers from the University of Cambridge have uncovered hundreds of tiny "penis worm" fossils in Arizona’s Grand Canyon, revealing a vibrant ecosystem from 500 million years ago that challenges our understanding of early life.

▶️ Formation Story
In a groundbreaking 2023 expedition along the Colorado River, Cambridge researchers, led by PhD student Giovanni Mussini, collected rock samples from the Grand Canyon’s Bright Angel Formation.

These 500 million
year old mudstone layers, dating to the Cambrian period (507–502 million years ago), preserved a treasure trove of soft-bodied fossils.

By dissolving rocks
in hydrofluoric acid and sifting through sediment, the team uncovered over 1,500 microscopic remains, including a newly identified priapulid species named Kraytdraco spectatus, inspired by its resemblance to a Star Wars krayt dragon.

These fossils
featuring complex branching teeth, offer a rare glimpse into the feeding habits and evolutionary adaptations of early marine animals.

▶️ Geological Information
The Bright Angel Formation, where these fossils were found, is a layer of fine-grained mudstone formed in a shallow, oxygen-rich sea near the equator during the Cambrian period.

At that time
the Grand Canyon region was submerged under a warm, nutrient-rich ocean, approximately 130–165 feet deep.

This "Goldilocks zone"
provided ideal conditions, abundant sunlight for photosynthetic microbes, high oxygen levels, and minimal wave disturbance, fostering rapid evolutionary innovation.

The muddy seafloor
acted as a natural preservative, rapidly burying soft-bodied organisms and preventing decay, a rare occurrence given that such environments typically favor decomposition over fossilization.

This exceptional preservation
allowed researchers to study intricate details, such as the worms’ tooth-lined, extensible mouths, revealing their role as voracious predators in a competitive ecosystem.

▶️ Interesting Fact
The Kraytdraco spectatus penis worm, with its hundreds of branching teeth, could turn its mouth inside out to sweep up debris and filter food, resembling a living cheese grater.

This sophisticated
feeding mechanism highlights the complexity of Cambrian life, showing that even tiny creatures were evolving bold strategies to thrive in a crowded ancient ocean.

🔎 What do you think life was like in the Cambrian seas 500 million years ago?

🔁 Like & Share your thoughts on how these bizarre creatures shaped the evolution of life on Earth!

🎞️ 505-Million-Year-Old Grand Canyon Fossils Reveal Evolution's Wild Side
https://t.co/zpQ1pykrwb

221

Geology Bits of Knowledge

@geologyBits

12 months ago

In Geology ✔️ Mineralogy - Botany #GrandCanyon #TontoGroup #CambrianExplosion #UNMResearch 🚨 Breaking: "Current News in Geology" 🔁 Grand Canyon’s Tonto Group Unveils Rapid Evolution in 500-Million-Year-Old Rocks A groundbreaking discovery in the Grand Canyon rewrites the story of Earth’s ancient life, revealing rapid marine animal turnovers during the Cambrian Explosion. What secrets do these 500-million-year-old rocks hold? Formation Story The Tonto Group, a 500-meter-thick stack of sedimentary rock layers in the Grand Canyon, formed during the Cambrian period (~505–500 million years ago) when rising sea levels flooded North America. This marine transgression part of the global Sauk megasequence, blanketed continents with shallow seas, depositing layers of sandstone, shale, and limestone. These rocks including the Tapeats Sandstone, Bright Angel Formation, Muav Formation, and Frenchman Mountain Dolostone, capture a pivotal moment in Earth’s history known as the Cambrian Explosion, when diverse marine life with hard shells, like trilobites, rapidly proliferated. Geological Information Recent research led by the University of New Mexico, with contributions from Utah State University, Boise State University, and others, has refined our understanding of the Tonto Group. Using advanced U-Pb dating of zircon crystals, researchers pinpointed the group’s deposition to a narrow window of 505–500 million years ago, much faster than previously thought. Unlike the traditional model by Edwin McKee, which suggested a single, gradual marine transgression, the new findings reveal five distinct sedimentary sequences separated by disconformities, gaps where erosion or non-deposition occurred. These sequences reflect a mix of marine and non-marine environments, including braided coastal plains, wind-blown dunes, and tidal flats, shaped by episodic sea-level changes and powerful tropical storms, possibly stronger than modern hurricanes. The study also highlights rapid faunal turnovers, with trilobite species radiating and going extinct in less than 800,000 years, a geological blink. These findings published in GSA Today (November 2024), recalibrate the Cambrian timescale and underscore the Tonto Group’s role as a global reference for studying early animal evolution. ▶️ Interesting Fact The Tonto Group’s Bright Angel Formation contains trace fossils, like tracks and burrows, that reveal the behavior of ancient marine invertebrates, offering a rare glimpse into how these creatures lived and moved 500 million years ago. What do you think drove the rapid evolution of marine life during the Cambrian Explosion? 🔁 Like & Share your thoughts or any favorite fossil finds in the comments! 🎞️ Is the Mystery of Earth's 1.2 billion Missing Years Solved? | SciShow News https://t.co/FVQkCuao7H

geologyBits's tweet photo. In Geology ✔️ Mineralogy - Botany
#GrandCanyon #TontoGroup #CambrianExplosion #UNMResearch

🚨 Breaking: "Current News in Geology"

🔁 Grand Canyon’s Tonto Group Unveils Rapid Evolution in 500-Million-Year-Old Rocks

A groundbreaking discovery
in the Grand Canyon rewrites the story of Earth’s ancient life, revealing rapid marine animal turnovers during the Cambrian Explosion.

What secrets do these 500-million-year-old rocks hold?

Formation Story
The Tonto Group, a 500-meter-thick stack of sedimentary rock layers in the Grand Canyon, formed during the Cambrian period (~505–500 million years ago) when rising sea levels flooded North America.

This marine transgression
part of the global Sauk megasequence, blanketed continents with shallow seas, depositing layers of sandstone, shale, and limestone.

These rocks
including the Tapeats Sandstone, Bright Angel Formation, Muav Formation, and Frenchman Mountain Dolostone, capture a pivotal moment in Earth’s history known as the Cambrian Explosion, when diverse marine life with hard shells, like trilobites, rapidly proliferated.

Geological Information
Recent research led by the University of New Mexico, with contributions from Utah State University, Boise State University, and others, has refined our understanding of the Tonto Group.

Using advanced U-Pb dating
of zircon crystals, researchers pinpointed the group’s deposition to a narrow window of 505–500 million years ago, much faster than previously thought.

Unlike the traditional model
by Edwin McKee, which suggested a single, gradual marine transgression, the new findings reveal five distinct sedimentary sequences separated by disconformities, gaps where erosion or non-deposition occurred.

These sequences reflect
a mix of marine and non-marine environments, including braided coastal plains, wind-blown dunes, and tidal flats, shaped by episodic sea-level changes and powerful tropical storms, possibly stronger than modern hurricanes.

The study also highlights
rapid faunal turnovers, with trilobite species radiating and going extinct in less than 800,000 years, a geological blink.

These findings
published in GSA Today (November 2024), recalibrate the Cambrian timescale and underscore the Tonto Group’s role as a global reference for studying early animal evolution.

▶️ Interesting Fact
The Tonto Group’s Bright Angel Formation contains trace fossils, like tracks and burrows, that reveal the behavior of ancient marine invertebrates, offering a rare glimpse into how these creatures lived and moved 500 million years ago.

What do you think drove the rapid evolution of marine life during the Cambrian Explosion?

🔁 Like & Share your thoughts or any favorite fossil finds in the comments!

🎞️ Is the Mystery of Earth's 1.2 billion Missing Years Solved? | SciShow News
https://t.co/FVQkCuao7H

103

Palaeocast @Palaeocast

about 1 year ago

Early animal evolution 2: the origin of shells and jaws Part 4 of 5 of a free lecture series on the Burgess Shale and the Cambrian Explosion by @trichodes. https://t.co/Tx56SkLBbC #cambrian #cambrianexplosion #burgessshale #paleo #paleontology #evolution #fossils

986

Palaeocast @Palaeocast

about 1 year ago

Early animal evolution 1: from sponges to vertebrates Part 3 of 5 of a free lecture series on the Burgess Shale and the Cambrian Explosion by @trichodes. https://t.co/Fh1U55EuWO #cambrian #cambrianexplosion #burgessshale #paleo #paleontology #evolution #fossils

939

Palaeocast @Palaeocast

about 1 year ago

The Burgess Shale and life 508 million years ago Part 2 of 5 of a free lecture series on the Burgess Shale and the Cambrian Explosion by @trichodes. https://t.co/YHcHSmjRBN #cambrian #cambrianexplosion #burgessshale #paleo #paleontology #evolution #fossils

Palaeocast @Palaeocast

about 1 year ago

The Cambrian Explosion and the diversification of animals Part 1 of 5 of a free lecture series on the Burgess Shale and the Cambrian Explosion by @trichodes. https://t.co/TbCwjbN72a #cambrian #cambrianexplosion #burgessshale #paleo #paleontology #evolution #fossils

649

Phys.org

@physorg_com

about 1 year ago

#A 500-million-year-old fossil once thought to be an early #Mollusk has been reclassified as a chancelloriid relative, reshaping views on animal evolution during the #CambrianExplosion. @sciencemagazine https://t.co/Lc1YAsc5OI

Umi @ashtolentino2

over 1 year ago

I just drew Prototype as the Hallucigenia #Hallucigenia #prototype #regretevatorprototype #cambrian #cambrianexplosion #art #Doodles #drawing

ashtolentino2's tweet photo. I just drew Prototype as the Hallucigenia #Hallucigenia #prototype #regretevatorprototype #cambrian #cambrianexplosion #art #Doodles #drawing https://t.co/oLEm8FMesK

343

RocketMe Up Digital Art @RocketMeUpArt

over 1 year ago

🦐 The Cambrian Explosion (~540 million years ago) marked a rapid diversification of life, with major animal groups emerging in a short time! 🌊 Art by @RocketMeUp 🚀 #Evolution #CambrianExplosion #LifeOnEarth #Biodiversity #AI #DigitalArt

RocketMeUpArt's tweet photo. 🦐 The Cambrian Explosion (~540 million years ago) marked a rapid diversification of life, with major animal groups emerging in a short time! 🌊

Art by @RocketMeUp 🚀

#Evolution #CambrianExplosion #LifeOnEarth #Biodiversity #AI #DigitalArt https://t.co/uuLEdi9hJW

Manorama Online

@manoramaonline

almost 2 years ago

ആ കാലഘട്ടത്തിലെ ഫോസിലുകൾ പരിശോധിച്ചാണ് ശാസ്ത്രജ്ഞർ ഈ നിഗമനത്തിലെത്തിയത്. ചാൾസ് ഡാർവിനു പോലും സമസ്യകൾ സൃഷ്ടിച്ച പ്രതിഭാസമായിരുന്നു കാംബ്രിയൻ വിസ്ഫോടനം. #Cambrianexplosion #Biodiversity #Environment https://t.co/WmHTkM3v61

171

Stephen C. Meyer

@StephenCMeyer

almost 2 years ago

"Recently, this famous fossil organism has been totally reinterpreted and its reconstruction literally turned upside down." says @gbechly #fossilfriday #cambrianexplosion https://t.co/deR8uAg7Tm

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