diadem

Some had exploded into many fragments because of the high temperatures, but the researchers were able to reconstruct a few, such as a greenstone bird figurine, a mask with two polished obsidian eyes, and a greenstone carved diadem.

The greenstone ornaments are typical of the Late Classic period and the mask and diadem are known to be exclusive to Maya royalty.

Scientists have discovered how female Diadem butterflies have evolved to look like African Queen butterflies to repel predators.

"In this case, Diadem butterflies have re-evolved an ancestral wing pattern and repurposed it to mimic the Africa Queen, providing a major advance in our understanding of how tasty species mimic those that are toxic."

Different patterns are found on African Queen butterflies in north, east, south and west Africa -- and the patterns on female Diadem butterflies in each area match these.