#vertebrates — Public Fediverse posts

The #frog #Pristimantis #esmeraldas (#Strabomantidae) is listed as "Least Concern" on the #IUCN List of #Threatened #Species; however, it faces threats from #agriculture/#deforestation within its habitats in Ecuador/Colombia. Like all Strabomantidae, it is #livebearing. With 626 known species, this genus is the most #speciose of any #vertebrates. #Biodiversity
©#StefanFWirth

Reference
https://doi.org/10.2305%2FIUCN.UK.2019-3.RLTS.T56589A85864265.en

Please support me
https://ko-fi.com/sfwirth

#Illustration
© S.F.Wirth, AI-assisted

The #frog #Pristimantis #esmeraldas (#Strabomantidae) is listed as "Least Concern" on the #IUCN List of #Threatened #Species; however, it faces threats from #agriculture/#deforestation within its habitats in Ecuador/Colombia. Like all Strabomantidae, it is #livebearing. With 626 known species, this genus is the most #speciose of any #vertebrates. #Biodiversity
©#StefanFWirth

Reference
https://doi.org/10.2305%2FIUCN.UK.2019-3.RLTS.T56589A85864265.en

Please support me
https://ko-fi.com/sfwirth

#Illustration
© S.F.Wirth, AI-assisted

Long before #vertebrates walked on land, #millipedes had the place to themselves.

Hundreds of millions of years before #dinosaurs arrived, these early decomposers were helping establish Earth's terrestrial ecosystems.

But despite their ancient history, scientists still hadn't fully unraveled their evolutionary story.

Now, an international tesm of scientists has solved one of the last major mysteries in millipede #evolution, revealing new clues about a group of #animals that helped pave the way for #life on land.

Millipedes beat vertebrates onto land by more than 80 million years.

They set the stage for later life on land, including humans and vertebrates.

#biology
https://phys.org/news/2026-06-evolutionary-history-millipede-dating-million.html

Paper by Vasquez-Valverde et al. (2026):
https://www.cell.com/current-biology/abstract/S0960-9822(26)00640-8?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0960982226006408%3Fshowall%3Dtrue

Long before #vertebrates walked on land, #millipedes had the place to themselves.

Hundreds of millions of years before #dinosaurs arrived, these early decomposers were helping establish Earth's terrestrial ecosystems.

But despite their ancient history, scientists still hadn't fully unraveled their evolutionary story.

Now, an international tesm of scientists has solved one of the last major mysteries in millipede #evolution, revealing new clues about a group of #animals that helped pave the way for #life on land.

Millipedes beat vertebrates onto land by more than 80 million years.

They set the stage for later life on land, including humans and vertebrates.

#biology
https://phys.org/news/2026-06-evolutionary-history-millipede-dating-million.html

Paper by Vasquez-Valverde et al. (2026):
https://www.cell.com/current-biology/abstract/S0960-9822(26)00640-8?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0960982226006408%3Fshowall%3Dtrue

Modern #imagingtechnologies allow more #fluorescence insights in #vertebrates. B. Burriel-Carranza et al. (2026) show that the #granularglands and #epidermis of the #firesalamander produce different #fluorophores, and that such compounds also circulate via the #bloodstream. Fluorescence may have a #communicative function.

© #StefanFWirth

Reference
https://doi.org/10.1098/rsos.251991

#Figure
Potential #ecologicalrelevance of biofluorescence in S. salamandra, by the authors above http://creativecommons.org/licenses/by/4.0/

Modern #imagingtechnologies allow more #fluorescence insights in #vertebrates. B. Burriel-Carranza et al. (2026) show that the #granularglands and #epidermis of the #firesalamander produce different #fluorophores, and that such compounds also circulate via the #bloodstream. Fluorescence may have a #communicative function.

© #StefanFWirth

Reference
https://doi.org/10.1098/rsos.251991

#Figure
Potential #ecologicalrelevance of biofluorescence in S. salamandra, by the authors above http://creativecommons.org/licenses/by/4.0/

👁️🧬 A new #study proposes that #vertebrates’ unique #eyes evolved from a single median eye atop a #worm-like ancestor 600 million years ago.

That ancestor lost its side eyes while burrowing, then later repurposed its remaining third eye into our paired eyes. The pineal gland in your #brain is that original third eye, still regulating your #sleep from light signals.

👉 https://www.psypost.org/scientists-say-the-hidden-third-eye-inside-your-skull-is-the-bizarre-reason-you-can-see/

#evolution #science #biology #neuroscience #ancient #humans

👁️🧬 A new #study proposes that #vertebrates’ unique #eyes evolved from a single median eye atop a #worm-like ancestor 600 million years ago.

That ancestor lost its side eyes while burrowing, then later repurposed its remaining third eye into our paired eyes. The pineal gland in your #brain is that original third eye, still regulating your #sleep from light signals.

👉 https://www.psypost.org/scientists-say-the-hidden-third-eye-inside-your-skull-is-the-bizarre-reason-you-can-see/

#evolution #science #biology #neuroscience #ancient #humans

🐟🧪 Biologists from #Acadia University and the University of #BritishColumbia studied how #psilocybin affects the behavior of the aggressive mangrove rivulus #fish.

#Data indicated that the compound reduces territorial displays while allowing normal social interactions to continue. The findings suggest that the psychoactive ingredient in magic #mushrooms can dampen social conflict in #vertebrates.

👉 https://www.popsci.com/science/magic-mushrooms-fish/

#science #biology #nature #neuroscience #research #wildlife #ocean #ecology #animals

🐟🧪 Biologists from #Acadia University and the University of #BritishColumbia studied how #psilocybin affects the behavior of the aggressive mangrove rivulus #fish.

#Data indicated that the compound reduces territorial displays while allowing normal social interactions to continue. The findings suggest that the psychoactive ingredient in magic #mushrooms can dampen social conflict in #vertebrates.

👉 https://www.popsci.com/science/magic-mushrooms-fish/

#science #biology #nature #neuroscience #research #wildlife #ocean #ecology #animals

Human Eyes Evolved from a Single Median Eye of a 600-Million-Year-Old Ancestor

📰 Original title: The shocking origin of human eyes traces back to an ancient “cyclops”

🤖 IA: It's clickbait ⚠️
👥 Usuarios: It's clickbait ⚠️

View full AI summary: https://killbait.com/en/human-eyes-evolved-from-a-single-median-eye-of-a-600-million-year-old-ancestor/?redirpost=a4a3ce91-a4b1-4056-976f-0478e229d623

#science #evolution #eyes #vertebrates

Human Eyes Evolved from a Single Median Eye of a 600-Million-Year-Old Ancestor

📰 Original title: The shocking origin of human eyes traces back to an ancient “cyclops”

🤖 IA: It's clickbait ⚠️
👥 Usuarios: It's clickbait ⚠️

View full AI summary: https://killbait.com/en/human-eyes-evolved-from-a-single-median-eye-of-a-600-million-year-old-ancestor/?redirpost=a4a3ce91-a4b1-4056-976f-0478e229d623

#science #evolution #eyes #vertebrates

Why do some clades contain far more #species than others? By testing competing explanations across terrestrial #vertebrates, this study reveals that #biodiversity patterns are most often shaped by long-term productivity-driven equilibrium dynamics @PLOSBiology https://plos.io/4vuS10G

Why do some clades contain far more #species than others? By testing competing explanations across terrestrial #vertebrates, this study reveals that #biodiversity patterns are most often shaped by long-term productivity-driven equilibrium dynamics @PLOSBiology https://plos.io/4vuS10G

🪱🌊 New #research indicates that our eyes developed from a midline light-sensing organ in a primitive sea creature.

While our ancestors lost their original paired eyes while living as stationary filter feeders, the need for movement eventually triggered the #evolution of the complex retinas we use today. This process also led to the formation of the pineal gland, which regulates sleep cycles in modern #vertebrates.

👉 https://www.independent.co.uk/news/science/brain-eyesight-animals-worm-oceans-b2951015.html

#science #biology #nature #marinebiology #history #genetics #zoology #neuroscience #education

🪱🌊 New #research indicates that our eyes developed from a midline light-sensing organ in a primitive sea creature.

While our ancestors lost their original paired eyes while living as stationary filter feeders, the need for movement eventually triggered the #evolution of the complex retinas we use today. This process also led to the formation of the pineal gland, which regulates sleep cycles in modern #vertebrates.

👉 https://www.independent.co.uk/news/science/brain-eyesight-animals-worm-oceans-b2951015.html

#science #biology #nature #marinebiology #history #genetics #zoology #neuroscience #education

#Regeneration of fins and limbs relies on shared cellular playbook
Immune cells, blood and repair #genes act in concert across three regenerating #vertebrates
Team cut fins off #bichirs and tracked #gene activity at wound after one, three and seven days, which revealed types of cells present and activity. Team compared data to similar new and existing data about #axolotl, salamander that regrows limbs, and #zebrafish, a that can regrow tips of fins
https://www.sciencenews.org/article/regeneration-of-fins-and-limbs-relies-on-a-shared-cellular-playbook
https://archive.ph/l7NI2

#Regeneration of fins and limbs relies on shared cellular playbook
Immune cells, blood and repair #genes act in concert across three regenerating #vertebrates
Team cut fins off #bichirs and tracked #gene activity at wound after one, three and seven days, which revealed types of cells present and activity. Team compared data to similar new and existing data about #axolotl, salamander that regrows limbs, and #zebrafish, a that can regrow tips of fins
https://www.sciencenews.org/article/regeneration-of-fins-and-limbs-relies-on-a-shared-cellular-playbook
https://archive.ph/l7NI2

#Eyes of the world's longest-living #vertebrate, the #GreenlandShark, show little #ageing
Greenland #shark (Somniosus microcephalus) can live for up to 400 years in the chilly North Atlantic and Arctic waters, making it one of the longest-living #vertebrates on Earth. And according to new research its seemingly undead eyes are fully functioning and barely deteriorate even after a century. Unravelling the shark's anti-ageing secrets could benefit human eye health.
https://www.abc.net.au/news/science/2026-01-10/eyes-dont-age-for-greenland-shark/106019818

#Eyes of the world's longest-living #vertebrate, the #GreenlandShark, show little #ageing
Greenland #shark (Somniosus microcephalus) can live for up to 400 years in the chilly North Atlantic and Arctic waters, making it one of the longest-living #vertebrates on Earth. And according to new research its seemingly undead eyes are fully functioning and barely deteriorate even after a century. Unravelling the shark's anti-ageing secrets could benefit human eye health.
https://www.abc.net.au/news/science/2026-01-10/eyes-dont-age-for-greenland-shark/106019818

🧬👁️ In an evolutionary plot twist, new #research shows that #humans and other #vertebrates share an ancestor that actually lost its paired eyes before evolving them all over again.

👉 https://phys.org/news/2026-02-oneeyed-creature-gave-modern-eyes.html

#evolution #biology #science #eyes #history #nature #genetics #discovery

🧬👁️ In an evolutionary plot twist, new #research shows that #humans and other #vertebrates share an ancestor that actually lost its paired eyes before evolving them all over again.

👉 https://phys.org/news/2026-02-oneeyed-creature-gave-modern-eyes.html

#evolution #biology #science #eyes #history #nature #genetics #discovery

All #vertebrates #evolved from a distant worm-like ancestor possessing a single median eye, which eventually gave rise to modern paired eyes and the brain's pineal gland.
#EvolutionaryBiology #Biology #sflorg
https://www.sflorg.com/2026/02/ebio02252601.html

All #vertebrates #evolved from a distant worm-like ancestor possessing a single median eye, which eventually gave rise to modern paired eyes and the brain's pineal gland.
#EvolutionaryBiology #Biology #sflorg
https://www.sflorg.com/2026/02/ebio02252601.html

Football-sized #fossil creature may have been one of the first land #animals to eat its veggies https://www.eurekalert.org/news-releases/1115870

#Carboniferous recumbirostran elucidates the origins of terrestrial herbivory https://www.nature.com/articles/s41559-025-02929-8

"for tens of millions of years, these early land-dwelling creatures only ate their fellow animals... In a new paper, scientists describe the 307-million-year-old fossil of one of the earliest known land #vertebrates that evolved the ability to eat #plants."

👁️👁️ More than 500 million years ago, some of the very first #vertebrates may have navigated the world with four eyes.

New #research suggests two of those eyes eventually evolved into the pineal gland – the part of our modern #brains that regulates #sleep.

👉 https://www.smithsonianmag.com/smart-news/the-earliest-known-vertebrates-had-four-eyes-and-they-worked-a-lot-like-ours-do-new-research-suggests-180988104/

#paleontology #evolution #fossils #biology #science #Smithsonian #history #nature #stem

👁️👁️ More than 500 million years ago, some of the very first #vertebrates may have navigated the world with four eyes.

New #research suggests two of those eyes eventually evolved into the pineal gland – the part of our modern #brains that regulates #sleep.

👉 https://www.smithsonianmag.com/smart-news/the-earliest-known-vertebrates-had-four-eyes-and-they-worked-a-lot-like-ours-do-new-research-suggests-180988104/

#paleontology #evolution #fossils #biology #science #Smithsonian #history #nature #stem

The Age of Fishes began with mass death, fossil database reveals https://phys.org/news/2026-01-age-fishes-began-mass-death.html

#MassExtinction triggered the early radiations of jawed vertebrates and their jawless relatives https://www.science.org/doi/10.1126/sciadv.aeb2297

"from this biological havoc, known as the Late #Ordovician Mass #Extinction, came an unprecedented richness of vertebrate life. One group came to dominate all others, putting life on the path to what is known today as jawed #vertebrates... they only became dominant because this happened"

SemIDEEV de Maxime POLICARPO

📅 Lundi 3 novembre 2025 à 14h à l'IDEEV

⏩"Evolution of olfaction in vertebrates"

⏩ En savoir plus : https://www.ideev.universite-paris-saclay.fr/seminaires/

#seminaire #olfaction #vertebrates #genomics

Human-induced pressures are expected to intensify this century. This study presents the #ProactiveConservationIndex, a new tool for #conservation prioritization regarding future threats for any group of species, & applies it to all terrestrial #vertebrates
@PLOSBiology plos.io/3WVRpRH

Human-induced pressures are expected to intensify this century. This study presents the #ProactiveConservationIndex, a new tool for #conservation prioritization regarding future threats for any group of species, & applies it to all terrestrial #vertebrates
@PLOSBiology plos.io/3WVRpRH

Illustration by William Cheselden, from Osteographia (1733).

Source: US National Library of Medicine

https://pdimagearchive.org/images/8edd2c7a-794b-42de-b22d-062b6761a7da

#anatomy #turtles #biology #skeletons #vertebrates #art #publicdomain

Four-limbed #vertebrates, known as tetrapods, have two enlarged areas in their spinal cords. The two enlargements have a correlation with the forelimbs and hind limbs, respectively. These enlargements are thought to be caused by the complex muscular system and the rich sensory networks supplying #nerves to the limbs.
#Neuroscience #EvolutionaryBiology #sflorg
https://www.sflorg.com/2025/10/ns10082502.html

Four-limbed #vertebrates, known as tetrapods, have two enlarged areas in their spinal cords. The two enlargements have a correlation with the forelimbs and hind limbs, respectively. These enlargements are thought to be caused by the complex muscular system and the rich sensory networks supplying #nerves to the limbs.
#Neuroscience #EvolutionaryBiology #sflorg
https://www.sflorg.com/2025/10/ns10082502.html

Study warns up to a quarter of Philippine vertebrates risk extinction https://news.mongabay.com/2025/10/study-warns-up-to-a-quarter-of-philippine-vertebrates-risk-extinction/

#Philippine #wildlife #vertebrates #extinction

Study warns up to a quarter of Philippine vertebrates risk extinction https://news.mongabay.com/2025/10/study-warns-up-to-a-quarter-of-philippine-vertebrates-risk-extinction/

#Philippine #wildlife #vertebrates #extinction

You can hold on to your butts thanks to #DNA that evolved in #fish
Making digits seems to involve #gene activity that was needed to make a #cloaca.
Fish that limbed #vertebrates evolved from don't have obvious digit equivalents, most common types of fish just have a large collection of rays supporting their fins.
It turns out hox gene activity in digits isn't the ancestral state; instead, it seems to have #evolved separately in the ray-finned fish and vertebrate lineages.
https://arstechnica.com/science/2025/09/distinct-digits-may-have-evolved-by-using-dna-that-makes-the-cloaca/

You can hold on to your butts thanks to #DNA that evolved in #fish
Making digits seems to involve #gene activity that was needed to make a #cloaca.
Fish that limbed #vertebrates evolved from don't have obvious digit equivalents, most common types of fish just have a large collection of rays supporting their fins.
It turns out hox gene activity in digits isn't the ancestral state; instead, it seems to have #evolved separately in the ray-finned fish and vertebrate lineages.
https://arstechnica.com/science/2025/09/distinct-digits-may-have-evolved-by-using-dna-that-makes-the-cloaca/

Palaeocast has finally released part 2 of the wonderful interview with Dr Yara Haridy, about the origin of teeth ... which is stranger than you think .

https://www.palaeocast.com/origin-of-teeth/

#fossilFriday
#fossils
#teeth
#vertebrates

Palaeocast has finally released part 2 of the wonderful interview with Dr Yara Haridy, about the origin of teeth ... which is stranger than you think .

https://www.palaeocast.com/origin-of-teeth/

#fossilFriday
#fossils
#teeth
#vertebrates

`Our observations highlight Norselaspis as a prelude to the intercalation of the muscular neck and throat that would power the early jaw apparatus. Therefore, the vertebrate jaw—often considered the functional driver for ‘gnathostome’ innovations1,2,3—evolved instead as a follower to the sensory enhancement, increased cardiac output and greater locomotory control now inferred in the jawless sister group.`

https://www.nature.com/articles/s41586-025-09329-9

h/t @PopularScience

#biology #evolution #fish #vertebrates

`Our observations highlight Norselaspis as a prelude to the intercalation of the muscular neck and throat that would power the early jaw apparatus. Therefore, the vertebrate jaw—often considered the functional driver for ‘gnathostome’ innovations1,2,3—evolved instead as a follower to the sensory enhancement, increased cardiac output and greater locomotory control now inferred in the jawless sister group.`

https://www.nature.com/articles/s41586-025-09329-9

h/t @PopularScience

#biology #evolution #fish #vertebrates

Dinosaur teeth as time capsules of climate data: New method to reconstruct carbon dioxide concentrations and global primary production from fossilized tooth enamel 👉 https://press.uni-mainz.de/dinosaur-teeth-as-time-capsules-of-climate-data/

#ClimateResearch #climate #palaeontology #dinosaur #TyrannosaurusRex #vertebrates #fossils #dinosaurs #paleontology #geochemistry #IsotopeGeology #OxygenIsotopes

8-Jul-2025
Deep dive into the ‘mighty bite’ of mysterious ancient #fish

Predatory fish that evolved into the first terrestrial animals on Earth are still revealing insights into the origins of mammals – including new research into the eating habits of lobe-finned fish which inhabited an ancient reef in northern Australia.

https://www.eurekalert.org/news-releases/1090435

#science #evolution #fossils #vertebrates #tetrapods #ecology

8-Jul-2025
Deep dive into the ‘mighty bite’ of mysterious ancient #fish

Predatory fish that evolved into the first terrestrial animals on Earth are still revealing insights into the origins of mammals – including new research into the eating habits of lobe-finned fish which inhabited an ancient reef in northern Australia.

https://www.eurekalert.org/news-releases/1090435

#science #evolution #fossils #vertebrates #tetrapods #ecology

The Conversation: Scanning Australia’s bones. “It helps researchers from all around the world study rare and extinct species remotely, compare skeletal features across a wide range of Australian vertebrates, and conduct detailed analyses without physically handling fragile specimens. But it isn’t just researchers who will benefit from Ozboneviz. Whether you’re a student, teacher, artist […]

https://rbfirehose.com/2025/06/11/the-conversation-scanning-australias-bones/

The Conversation: Scanning Australia’s bones. “It helps researchers from all around the world study rare and extinct species remotely, compare skeletal features across a wide range of Australian vertebrates, and conduct detailed analyses without physically handling fragile specimens. But it isn’t just researchers who will benefit from Ozboneviz. Whether you’re a student, teacher, artist […]

https://rbfirehose.com/2025/06/11/the-conversation-scanning-australias-bones/

We probably inherited our #joints from… a #fish
#Cartilaginous fish form the same style of joint that we do, while jawless fish don't.
Humans, other land #vertebrates, and jawed fish have #synovial joints. The lubricated cavity within these joints makes them more mobile and stable because it allows for bones or cartilage to slide against each other without friction, which facilitates movement.
https://arstechnica.com/science/2025/03/we-probably-inherited-our-joints-from-a-fish/

We probably inherited our #joints from… a #fish
#Cartilaginous fish form the same style of joint that we do, while jawless fish don't.
Humans, other land #vertebrates, and jawed fish have #synovial joints. The lubricated cavity within these joints makes them more mobile and stable because it allows for bones or cartilage to slide against each other without friction, which facilitates movement.
https://arstechnica.com/science/2025/03/we-probably-inherited-our-joints-from-a-fish/

Intelligence on Earth Evolved Independently at Least Twice

https://www.wired.com/story/intelligence-evolved-at-least-twice-in-vertebrate-animals/

#HackerNews #Intelligence #Evolved #Evolutionary #Biology #Vertebrates #Science #News #Nature

Intelligence on Earth Evolved Independently at Least Twice

https://www.wired.com/story/intelligence-evolved-at-least-twice-in-vertebrate-animals/

#HackerNews #Intelligence #Evolved #Evolutionary #Biology #Vertebrates #Science #News #Nature