fossils
Image of the Day: 3-Billion-Year-Old Bubbles 
Image of the Day: 3-Billion-Year-Old Bubbles 
The Scientist Staff | May 10, 2017
Fossilized gas bubbles, formed from being trapped by microbial biofilms, provide the oldest signature of life in terrestrial hot springs.
Image of the Day: Bygone Blood Cells
Image of the Day: Bygone Blood Cells
The Scientist Staff | Apr 10, 2017
These fossilized red blood cells (right), found in an ancient, blood-engorged Amblyomma tick (left), likely belonged to primates.
Image of the Day: Ancient Worm
Image of the Day: Ancient Worm
The Scientist Staff | Apr 9, 2017
Unlike related species, Ovatiovermis cribratus, a lobopodian from the Cambrian period, did not have a hard, protective shell.
Dinosaur Phylogenetic Tree Shake-Up
Dinosaur Phylogenetic Tree Shake-Up
Jef Akst | Mar 24, 2017
An analysis of 74 dinosaur species leads a group of researchers to reorganize the extinct animals’ evolutionary history.
Image of the Day: Age-Old Algae
Image of the Day: Age-Old Algae
The Scientist Staff | Mar 14, 2017
This 1.6 billion-year-old fossil, which resembles red algae, is the oldest plant-like fossil ever found.
Vision Helped Ancestral Fish Adapt to Life on Land
Vision Helped Ancestral Fish Adapt to Life on Land
Diana Kwon | Mar 8, 2017
“Buena vista” hypothesis suggests that changes in the sizes of eyes, rather than a shift from fins to limbs, led fish to transition to land more than 300 million years ago.  
Image of the Day: Primordial Plants
Image of the Day: Primordial Plants
The Scientist Staff | Mar 8, 2017
This ancient relative of the Ginkgo biloba (Umaltolepis mongoliensis) dates back 100 million years, to the early Cretaceous Period.
Image of the Day: New Kid on the Block
Image of the Day: New Kid on the Block
The Scientist Staff | Mar 5, 2017
Ancient skulls discovered in China may belong to a new hominid species that possessed both modern human and Neanderthal characteristics.
Ancient Microfossils May be Earliest Signs of Life
Ancient Microfossils May be Earliest Signs of Life
Diana Kwon | Mar 2, 2017
Researchers find what appear to be 3.77 billion-year-old hints of microbial life hidden in Canadian rocks, but some scientists are not convinced.
Ancient Marine Reptile Birthed Live Young
Ancient Marine Reptile Birthed Live Young
Bob Grant | Feb 15, 2017
Researchers have described a pregnant Dinochephalosaurus, and the fossilized remains suggest that the massive animal did not lay eggs, as previously suspected.