Campi Flegrei is a large area of volcanic activity close to Naples.
The creature also represents an entirely new genus, or group of species.
The unusual behaviour may have been linked to sexual activity.
President Enrique Peña Nieto has declared three days of mourning for the second time this month.
The storm ripped trees, destroyed homes and ushered in 'catastrophic flash flooding' to the US territory.
Beelzebufo - or the devil frog as it is known - weighed around 4kg and lived 68 million years ago.
The lesser scaup rises to the challenge of competition by growing a larger penis.
The new species of prehistoric sea creature was discovered in a clay pit near Bielefeld, Germany in the 1980's.
Studying the listening abilities of birds such as the barn owl could lead to new treatments for those with hearing loss.
Maria has maximum sustained winds of 160mph and is just 15 miles east-southeast of Dominica.
The reef faces a major threat in addition to those posed by global warming and rising sea temperatures.
The amount of free oxygen on the planet skyrocketed, making the planet ideal for complex life.
"That's going to look awesome."
Bears are cute, but cuddling them is always a bad idea
The creature has sharp teeth - but no one can say for sure what it is.
Until 2013, the bird had not been seen alive by a single human for more than 100 years.
No other creature has ever had legs quite like this one.
The fearsome crocodile lived among the dinosaurs during the Cretaceous Period.
The female giant panda died of multiple illnesses.
Behaviour was documented at Palmyra Atoll in the middle of the Pacific Ocean.
The first primates are thought to have spent most of their time in the trees.
But they're not necessarily very nice to each other.
Scientists found traces of complex animals which pre-date the oldest known fossils.
A snarling tiger cub, playful brown bears and a tiny seahorse clinging to a cotton bud are among the beautiful photos on this year's shortlist.
The skull shape was closely related to the size and shape of the brain within.
Soriatitan golmayensis is thought to have lived between 130 and 138 million years ago.
A Japanese garden plant's colour was changed from violet to white by altering a single gene.
'Catastrophic' storm surge is feared in the Florida Peninsula, where ocean levels were quickly rising.
France's public insurance agency puts huge costs on damage to both island communities.
Favourable conditions in the Atlantic are fuelling devastating tropical storms.