Adaptive zones of feliforms and evolutionary regimes within terrestrial mammalian carnivores
Simpson, G. G. Major Features of Evolution (Columbia Univ. Press, 1953). Simpson, G. G. Tempo and Mode in…
The Human Family Tree May Need a Major Rewrite
New Monash University research argues our Paranthropus (pictured) and Australopithecus ancestors who lived up to 5 million years…
236-Million-Year-Old Fossil Reveals a Stunning Secret About the Origins of Mammal Birth
Skull of the Chiniquodon theotonicus individual that was used for this study. Credit: Leandro Gaetano An unusual growth…
Construction Crew Uncovers Giant 20-Meter Dinosaur in Brazil
Artistic reconstruction of the new dinosaur from Maranhão state. It was 20 meters long and had a European…
Crocodiles Evolved Backwards From Warm-Blooded Species to Cold-Blooded Killers
Despite an incredible number of visible differences, modern-day crocodiles and birds share a common ancestor dating back to…
The Weirdest Theory Yet for Why Life on Earth Suddenly Exploded
In the first 20 million years of the Cambrian period, Earth experienced an explosion of life—a great evolutionary…
New Dinosaur Discovery in Zimbabwe: Mini-sauropod That May Have Been Bipedal
On the shores of the fake lake Kariba, a reservoir straddling the border between Zambia and Zimbabwe, another…
Inside the strange physics of why time stops at the speed of light
A clock aboard a fast-moving spacecraft does not break, lag or malfunction. It ticks normally for everyone inside.…
This 518-Million-Year-Old Creature Reveals How Spiders Got Their Bite
Artist’s impression of Urokodia. Credit: Xiaodong Wang Scientists from the University of Leicester and Yunnan University identified an…
Forgotten for 20 Years, This 240-Million-Year-Old Fossil Reveals a New Reptile Species
Part of the fossil was accidentally lost for more than two decades. Its rediscovery allowed the animal to…
T. Rex Babies Were No Bigger Than House Cats—But Already Deadly
Paleontologists know very little about Tyrannosaurus rex babies. Given how long these iconic carnivores have loomed over the…
Increased nutrient diversity can induce loss of microbial diversity through enhanced resource uptake
Media and bacterial culture Bacteria were precultured from frozen stocks in nutrient medium (NM) composed of 1% yeast…