L’endothermie a probablement été l’une des clés du succès évolutif des mammifères et des oiseaux. Il est donc crucial de dater son origine.
Tritylodon, seorang terapis, direkonstruksi sebagai hewan berdarah panas yang tinggal di malam hari. Perhatikan uap yang keluar dari paru-parunya.
Diilustrasikan oleh Luzia Soares
Berdarah panas adalah kunci dari apa yang membuat mamalia seperti sekarang ini. Itu sebabnya berolahraga ketika muncul pada nenek moyang mamalia penting.
Tritylodon, a therapsid, reconstructed as a night dwelling warm blooded animal. Note the steam coming out of its lungs.
Illustrated by Luzia Soares
These new finds indicate that Diictodon was burrowing and giving some parental care to its young. This was long thought to be unique to mammals.
The radiodont Anomalocaris, with its large stalked eyes, is considered a top predator that swam in the oceans more than 500 million years ago.
Katrina Kenny
Our study on weird ancient marine animals called radiodonts supports the idea that vision played a crucial role during the Cambrian Explosion, a rapid burst of evolution about 500 million years ago.
Amaga expatria, a spectacular species, has just been reported in Guadeloupe and Martinique.
Pierre & Claude Guezennec
Several species of flatworms have invaded the West Indies, and some are spectacular. We take stock of the situation with a study published at the same time as this article.
Amaga expatria, une espèce spectaculaire, vient d'être signalée en Guadeloupe et Martinique.
Pierre & Claude Guezennec
Plusieurs espèces de vers plats ont envahi les Antilles, dont certaines très spectaculaires. Nous faisons le point avec une étude publiée en même temps que cet article.
The hominin known as Lucy may not be the direct ancestor of humans.
A modern arthropod (the centipede Cormocephalus) crawls over its Cambrian ‘flatmate’ (the trilobite Estaingia).
Michael Lee / South Australian Museum and Flinders University
Modern animals took over our planet much more quickly than previously thought. This has both welcome and disturbing implications for the future of life on our rapidly changing planet
An artist’s impression of Siberian unicorns (Elasmotherium) walking in the steppe grass on a cloudy day.
Shutterstock/Elenarts
Some things that develop as normal in elephant sharks and other marine life can mimic things we see in human disease. That makes these ‘mutants’ ideal for study to find out why things go wrong in humans.