Mastodawn

#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 a shared cellular playbook

The findings strengthen the case that regeneration is an old trait, offering insights into how complex tissues rebuild themselves.

Science News

Inat Repost Bot Mar 18

https://inaturalist.org Observation of the Day for Mar 17, 2026: Snowy Owl [Aves], by user: pjmorgan1
[via @inatrepostbot]
https://www.inaturalist.org/observations/340970207
Waterloo Regional Municipality, ON, Canada
2026-03-01T17:46:00-05:00
Credit: (c) pjmorgan1, some rights reserved (CC BY-NC)
See more: https://www.inaturalist.org/projects/inat-observation-of-the-day
#inaturalist #inaturalistorg #citizenscience #snowyowl #buboscandiacus #waterlooregionalmunicipality #on #canada #aves #animals #chordates #vertebrates #birds #owls #typicalowls #typicaleagleowlsandhornedowls

Inat Repost Bot Mar 14

https://inaturalist.org Observation of the Day for Mar 13, 2026: Solomon Island Spiny Monitor [Reptilia], by user: colechap
[via @inatrepostbot]
https://www.inaturalist.org/observations/341807804
Hovukoilo, SB-IS, SB
2026-03-03T10:00:00+11:00
Credit: (c) Cole Chapman, some rights reserved (CC BY-NC)
See more: https://www.inaturalist.org/projects/inat-observation-of-the-day
#inaturalist #inaturalistorg #citizenscience #solomonislandspinymonitor #varanusspinulosus #hovukoilo #sbis #sb #reptilia #animals #chordates #vertebrates #reptiles #snakesandlizards #lizards #glassalligatormonitorlizardsandallies #monitorlizards #monitorlizards

Inat Repost Bot Mar 11

https://inaturalist.org Observation of the Day for Mar 10, 2026: Great Hammerhead [Animalia], by user: kat_meifyoucan
[via @inatrepostbot]
https://www.inaturalist.org/observations/341977365
2026-03-08T10:20:00-05:00
Credit: (c) Katherine Watkinson, some rights reserved (CC BY-NC)
See more: https://www.inaturalist.org/projects/inat-observation-of-the-day
#inaturalist #inaturalistorg #citizenscience #greathammerhead #sphyrnamokarran #animalia #animals #chordates #vertebrates #cartilaginousfishes #sharksandrays #sharks #galeansharks #groundsharks #hammerheadandwingheadsharks #hammerheadsharks

Inat Repost Bot Mar 4

https://inaturalist.org Observation of the Day for Mar 3, 2026: Hilaire’s Side-necked Turtle [Reptilia], by user: adriana_machado
[via @inatrepostbot]
https://www.inaturalist.org/observations/338493819
40000 Departamento de Rivera, Uruguay
2026-02-13T17:57:34-03:00
Credit: (c) Adriana Machado, some rights reserved (CC BY)
See more: https://www.inaturalist.org/projects/inat-observation-of-the-day
#inaturalist #inaturalistorg #citizenscience #hilairessideneckedturtle #phrynopshilarii #40000departamentoderivera #uruguay #reptilia #animals #chordates #vertebrates #reptiles #turtlesandtortoises #austroamericansideneckedturtles #southamericansideneckedturtles #beardedtoadheads

Benjamin Carr, Ph.D. 👨🏻‍💻🧬Feb 27

#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

Greenland shark eyes may hold anti-ageing secrets

The Greenland shark is thought to live for about 400 years but somehow its eyes appear to barely deteriorate, according to a new study that has implications for human health.

TKSST • seethis.tv 🌈🪐✨Feb 27

🧬👁️ 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

How a one‑eyed creature gave rise to our modern eyes

There is a tiny cyclops among your oldest ancestors, and humans share these remarkable ancestral roots with all other vertebrates. Researchers from Lund University and University of Sussex have found that all vertebrates evolved from a distant ancestor that had a single eye located at the top of its head. The study, published in Current Biology, also reveals that the remnants of this so-called median eye have today become the pineal gland in our brains.

Phys.org

Scientific Frontline Feb 25

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

One‑eyed creature gave rise to our modern eyes

There is tiny cyclops among your oldest ancestors, and humans share these remarkable ancestral roots with all other vertebrates.

Lukas VFN 🇪🇺Feb 10

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."