249 Million-Year-Old Fossil Reveals Complete Marine Ecosystem Just 3 Million Years After Earth’s Largest Extinction, Surprising Scientists

Written by Fabio Lucas Carvalho

Published on 14/11/2025 at 11:15

Updated on 14/11/2025 at 11:16

Fósseis de 249 milhões de anos encontrados no Ártico mostram cadeias alimentares complexas formadas apenas três milhões de anos

Seja o primeiro a reagir!

Discovery of 30,000 Fossils on Spitsbergen Island Reveals That Marine Ecosystems Recovered Much Faster After the “Great Extinction.”

Fossils dating back 249 million years prove that marine life recovered rapidly after the “Great Extinction”. In 2015, researchers found an impressive set of 30,000 teeth and bones on the Arctic island of Spitsbergen.

After years of analysis, specialists identified remains of marine reptiles, amphibians, bony fish, and extinct sharks.

The institutions involved, such as the Natural History Museum of the University of Oslo and the Swedish Museum of Natural History, suggest that this material belonged to an ecosystem that thrived right after the event that nearly wiped out life on Earth.

ARTICLE CONTINUES BELOW

Challenging Previous Assumptions

Spitsbergen Island, located in the Svalbard archipelago, was already known for revealing fossils from the early Dinosaur Era. This new fossil deposit reinforces the scientific importance of the region.

The fossils are preserved in layers that were once mud at the bottom of an ancient sea connected to the superocean Panthalassa. Dating techniques indicate that the bone bed is approximately 249 million years old.

Researchers recovered more than 800 kg of material, consisting of tiny fish scales, shark teeth, giant bones of marine reptiles, and even fossilized feces.

Some of the discoveries belong to reptiles and amphibians with unusual characteristics, documenting one of the oldest adaptations of land animals to deep water environments.

For a long time, the scientific community debated how recovery occurred after the Permian-Triassic extinction, considered the most devastating in history.

This event eliminated over 90% of marine species about 252 million years ago. It was caused by intense volcanic activity associated with the fragmentation of Pangea, leading to extreme warming, loss of oxygen in the oceans, and acidification.

The prevailing hypothesis indicated that the reconstruction of the oceans would have been slow, lasting approximately eight million years. The idea suggested that amphibians and reptiles advanced into the open ocean in gradual stages.

However, the large concentration of fossils found in Spitsbergen challenges this understanding by suggesting a much quicker return of ecological complexity.

Rapid Recovery of Ecosystems

The fossil site shows that marine ecosystems reorganized in an extremely rapid manner. Complex food chains, with numerous marine reptiles predators and amphibians, were already established just three million years after the mass extinction of the Permian-Triassic.

For researchers, this demonstrates a surprisingly short geological interval, providing new information about the marine communities that emerged shortly after the catastrophic event.

The fossils also reveal a great diversity of fully aquatic reptiles. Among them are archosaurs, ancient relatives of crocodiles, and various ichthyosaurs.

These creatures varied significantly in size, from small squid-hunters under one meter to giant predators exceeding five meters.

Based on a global comparative analysis, the Spitsbergen collection stands out as one of the richest in species of marine vertebrates from this period.

The recorded diversity suggests that the origins of marine reptiles and amphibians may be much older than previously thought, possibly even predating the Permian-Triassic extinction itself.

The reorganization of the ecosystem, according to researchers, paved the way for new food functions. This process influenced the formation of modern marine communities. The study, which redefines the understanding of the pace of recovery of life after a global collapse, was published in the journal Science.

0 Comentários

Mais recente

Mais antigos Mais votado

Feedbacks

Visualizar todos comentários

249 Million-Year-Old Fossil Reveals Complete Marine Ecosystem Just 3 Million Years After Earth’s Largest Extinction, Surprising Scientists

Discovery of 30,000 Fossils on Spitsbergen Island Reveals That Marine Ecosystems Recovered Much Faster After the “Great Extinction.”

Challenging Previous Assumptions

Rapid Recovery of Ecosystems

A giant half-ton ring fell in Kenya from space, and more than a year later, scientists still do not know where it came from.

Seen from space, an image taken by an astronaut shows an unlikely oasis in the Saudi Arabian desert, protected by a terrain that slows the advance of sand, surrounded by green circles, remnants of an extinct lake and nearly 10,000 years of preserved history.

In Botswana, a salt flat of up to 16,000 km² that was once an African megalake spends months as an absolute white desert, but during the rainy season it transforms into a shallow sea that reappears from nowhere and can be seen from space in the middle of southern Africa.

While the U.S. still faces limitations in deep space, China is developing unprecedented technology with strategic satellites that maintain communication with the far side of the Moon and aims for dominance by 2030.

Bavarian archaeologists unearthed a medieval skeleton that had an articulated iron hand in place of its left arm, and the discovery reveals that doctors were already creating sophisticated prosthetics over 500 years ago.

For the first time, scientists have mapped the Etna magma system in almost real time and discovered where the volcano was storing large volumes of molten material before years of eruptions, revealing an underground reservoir that fills and reorganizes like a living organism beneath the mountain.

More than 1,500 Chinese workers transformed an entire railway station in just one night and reduced a 7-hour journey to 90 minutes with a high-speed line of 200 km/h.

Brazilian city becomes a global destination after attracting tourists who travel up to 10,000 km to visit a sanctuary with 11 giant saints up to 10 meters tall, open 24 hours and located along a highway in SP.

JBL Flip Essential 3 SE is launched with 30W of power (20W + 10W), Bluetooth 5.4, Auracast for multiple connections, IP67 water and dust resistance, up to 12 hours of battery life, and a price of approximately R$ 660 in China.

After ten days orbiting the Moon, science confirms that the astronauts of the Artemis II mission return with altered bodies.

Pernambuco paradise with 59% of preserved area advances with R$ 2 billion in e-methanol, aims for 900 tons/day, grows 38.6% and builds electrified terminal of 400 thousand TEUs.

Brazil may have railways back on the map, but it will need the government: a study reveals 7,412 km ready for reactivation, a cost of R$ 75 billion, 61 sections analyzed, and none viable without public funding.

249 Million-Year-Old Fossil Reveals Complete Marine Ecosystem Just 3 Million Years After Earth’s Largest Extinction, Surprising Scientists

Discovery of 30,000 Fossils on Spitsbergen Island Reveals That Marine Ecosystems Recovered Much Faster After the “Great Extinction.”

Challenging Previous Assumptions

Rapid Recovery of Ecosystems

A giant half-ton ring fell in Kenya from space, and more than a year later, scientists still do not know where it came from.

Seen from space, an image taken by an astronaut shows an unlikely oasis in the Saudi Arabian desert, protected by a terrain that slows the advance of sand, surrounded by green circles, remnants of an extinct lake and nearly 10,000 years of preserved history.

In Botswana, a salt flat of up to 16,000 km² that was once an African megalake spends months as an absolute white desert, but during the rainy season it transforms into a shallow sea that reappears from nowhere and can be seen from space in the middle of southern Africa.

While the U.S. still faces limitations in deep space, China is developing unprecedented technology with strategic satellites that maintain communication with the far side of the Moon and aims for dominance by 2030.

Bavarian archaeologists unearthed a medieval skeleton that had an articulated iron hand in place of its left arm, and the discovery reveals that doctors were already creating sophisticated prosthetics over 500 years ago.

For the first time, scientists have mapped the Etna magma system in almost real time and discovered where the volcano was storing large volumes of molten material before years of eruptions, revealing an underground reservoir that fills and reorganizes like a living organism beneath the mountain.

More than 1,500 Chinese workers transformed an entire railway station in just one night and reduced a 7-hour journey to 90 minutes with a high-speed line of 200 km/h.

JBL Flip Essential 3 SE is launched with 30W of power (20W + 10W), Bluetooth 5.4, Auracast for multiple connections, IP67 water and dust resistance, up to 12 hours of battery life, and a price of approximately R$ 660 in China.

A Finnish startup presented at CES 2026 the world’s first electric motorcycle with a solid-state battery that charges in 5 minutes, travels 600 kilometers, and lasts 100,000 cycles without losing capacity.

Chinese students use smart glasses with AI for cheating in university exams.

Brazilian city becomes a global destination after attracting tourists who travel up to 10,000 km to visit a sanctuary with 11 giant saints up to 10 meters tall, open 24 hours and located along a highway in SP.

JBL Flip Essential 3 SE is launched with 30W of power (20W + 10W), Bluetooth 5.4, Auracast for multiple connections, IP67 water and dust resistance, up to 12 hours of battery life, and a price of approximately R$ 660 in China.

After ten days orbiting the Moon, science confirms that the astronauts of the Artemis II mission return with altered bodies.

Pernambuco paradise with 59% of preserved area advances with R$ 2 billion in e-methanol, aims for 900 tons/day, grows 38.6% and builds electrified terminal of 400 thousand TEUs.

Brazil may have railways back on the map, but it will need the government: a study reveals 7,412 km ready for reactivation, a cost of R$ 75 billion, 61 sections analyzed, and none viable without public funding.