Mastodawn

GQE-Le Moulon Oct 27

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

PLOS Biology Oct 23

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

Public Domain Image Archive Oct 21

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

Scientific Frontline Oct 8

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

Researchers discover enlarged areas of the spinal cord in fish, previously found only in four-limbed vertebrates

We thought that fish also have spinal enlargements because they have paired pectoral and pelvic fins

Dragofix Oct 5

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

The Philippines, long recognized as one of the world’s most important biodiversity hotspots, could lose nearly a quarter of its unique land-dwelling vertebrate species unless urgent conservation action is taken, according to a new study. In a paper published in Science of The Total Environment, researchers assessed 1,294 species of amphibians, reptiles, birds and mammals. […]

Mongabay Environmental News

Benjamin Carr, Ph.D. 👨🏻‍💻🧬Sep 20

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.

Ars Technica

llewelly Aug 15

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 | Palaeontology podcasts

Palaeontology podcasts

katch wreck Aug 6

`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

Novel assembly of a head–trunk interface in the sister group of jawed vertebrates - Nature

Imaging of a Devonian jawless fish reveals advanced features previously thought to be exclusive to jawed vertebrates, challenging the idea that jaws were the primary driver for the evolution of derived traits in the vertebrate body plan.

Nature

Mainz University Aug 5

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