Paleontology
A fossil reveals early relatives of spiders — armed with claws
A Utah fossil shows early relatives of spiders and scorpions already had distinctive front claws 500 million years ago.
A Utah fossil shows early relatives of spiders and scorpions already had distinctive front claws 500 million years ago.
We summarize the week's scientific breakthroughs every Thursday.
Scientists tracked mantis strike force from youth to adulthood, showing females eventually hit far harder than males. Why is a mystery.