How Dinosaurs Swapped Terrifying Teeth for Bird Beaks

This article is from the source 'nytimes' and was first published or seen on September 30, 2017 09:00 (UTC). It last changed over 40 days ago and won't be checked again for changes.

You can find the current article at its original source at https://www.nytimes.com/2017/09/26/science/dinosaurs-beaks-teeth-birds.html

The article has changed 1 times. There is an RSS feed of changes available.