By analyzing nickel isotopes preserved in the 66-million-year-old debris left by the Chicxulub impact, researchers conclude that the asteroid responsible for Earth’s last mass extinction most likely belonged to an exceptionally rare class of primitive meteorites called carbonaceous chondrites of the Ornans type (CO chondrites).

The post Dinosaurs May Have Been Wiped Out by ‘Oddball’ Space Rock appeared first on Sci.News: Breaking Science News.

Paleontologists have identified a new species of meiolaniform turtle from northern Patagonia, Argentina, that lived during the Maastrichtian age, just before the asteroid-triggered mass extinction that wiped out all non-avian dinosaurs.

The post Fossil Discovery in Patagonia Reveals New Species of Horned Turtle appeared first on Sci.News: Breaking Science News.

Paleontologists have described an assemblage of marine fish fossils from the 62.2-million-year-old site of Qreiya 3 in the Eastern Desert of Egypt, providing a window into this transition.

The post Fish Fossils from Early Paleocene Fill 10-Million-Year Gap after Dinosaur Extinction appeared first on Sci.News: Breaking Science News.

By studying fungal microfossils in 66-million-year-old rock samples from the Denver Basin in Colorado, Johns Hopkins University microbiologists have confirmed that the dinosaur-killing asteroid impact triggered a worldwide fungal takeover, and uncovered a second, previously unknown ecological crisis just before it.

The post Fungi Bloomed Twice around End-Cretaceous Mass Extinction appeared first on Sci.News: Breaking Science News.