The summaries below were drafted with the help of AI tools and edited by journalists in our News division. All linked stories were reported, written and edited by McClatchy journalists. Unique ...

For decades, experts believed that the largest and most powerful predators in ancient oceans were vertebrates such as large fish and marine reptiles. Invertebrates like octopuses and squid were ...

You can't always judge a book by its cover. That is a lesson scientists have recently learned about the nectocaridid - a 500-million-year-old marine creature that looked like a squid but turned out to ...