The loamy soil of Tuscany, once an ancient sea bed, has yielded its second prehistoric whale in just over a week.
"It's a spectacular find," said Florence University palaeontologist Elisabetta Cioppi.
Cioppi said she was "excited" about the "extremely rich" traces of ancient invertebrates who fed off the whale's remains after it sank to the bottom of the sea.
"The variety of organisms around (the skeleton) will enable us to carry out a profound analysis of the ancient environment," she said.
Shark teeth were found among the whale's bones, "probably left in the ancient mammal's flesh when the predator attacked just before it died," she added.
The whale appeared when farmers were tilling a field near Pisa.
Cioppi said the skeleton dates back to the Pliocene Era, four million years ago.
At 10 metres (33 feet), the new whale is as long as the one that emerged from one of Italy's finest vineyards south of Florence last Thursday.
That five-million-year-old skeleton turned up on the property of Castello Banfi, makers of the famed Tuscan wine Brunello di Montalcino.
The Banfi proprietors latched onto the find as evidence of the "specially rich soil that gives our wine its complexity".
The two whales are in an excellent state of preservation and will soon be taken to Florence's Natural History Museum.
