“Two-headed beast from 100m BC”
The earliest recorded example of an axial bifurcation
malformation. (Image: Eric Buffetaut et al)
“A miniature two-headed creature from the age of the dinosaurs has been discovered in China, astonishing scientists who never imagined that so rare a mutant could be preserved for 100 million years.
The skeleton of a young aquatic reptile, known as Sinohydrosaurus lingyuanensis, is the first fossil ever unearthed which has two heads and necks, showing that a developmental abnormality seen in modern snakes, turtles, lizards and crocodiles also afflicted their ancient forebears.”
Artist’s impression taken from the fossil (via Daily Telegraph)
For something to be preserved as a fossil is rare — for a mutant to be fossilised is pretty remarkable!