Paleontologists in South America made a new find that revealed terror came in many forms long after the dinosaurs became extinct.
The scientists were excavating an area in northeastern Argentina when they unearthed one of the most complete fossils of a phorusrhacid - also known as the 'terror bird.' These birds were considered the top predators in South America after the dinosaurs died out more than 60 million years ago.
We have to guess that the birds held most of their terror in their enormous hooked beaks.
The fossil, which is missing only a few small bones, was excavated in northeastern Argentina in 2010. According to researchers, it's the most complete terror bird specimen ever found.
The new species, which has been dubbed 'Llallawavis scagliai,' likely lived around 3.5 million years ago, near the end of terror birds' reign, according to the researchers.
It stood about four feet tall and weighed about 40 pounds. It might seem a bit on the small end of the scale for such menacing creatures, especially compared to other family members who reached 10 feet tall. Regardless, you do not want to be confronted by a group of these feathery monsters and their bone-breaking beaks.
According to Science Mag, this new species boasted a bill that was, quote, "much less flexible than they are in other types of birds, which may have helped them pummel their prey and more effectively rip apart carcasses." Great.
More from AOL.com:
FDA pulls diabetes drug citing increased risk of death
Your height may affect chance of heart disease
Smartphones could help protect people from earthquakes