Spider Blood Found In 20 Million Year Old Fossil A scientist from the University of Manchester has discovered the first identified droplets of spider blood in a piece of amber up to 20 million years old. Two droplets of blood, technically known as haemolymph, have been preserved in the amber which also contains the spider -- Filistatidae -- a family commonly found in South America and the Caribbean. The droplets are the first identified examples of spider blood ever found in an amber fossil. It is possible the blood could be used to extract DNA. The fossil, which is 4cm...