'Frozen in place' fossils reveal dinosaur-killing asteroid struck in spring

'Frozen in place' fossils reveal dinosaur-killing asteroid struck in spring
Clues to the season of impact lingered in delicate fish fossils. Spring is a time for budding flowers, tender green leaves and baby animals. But 66 …

* View the article originally published here. ** More curations: Al Cannistra at San Antonio ONE here.