杏吧原创

Two fossilised jawbones unveiled this week in London could provide the
missing evolutionary link between fish and land animals. Excavated from rocks in
Latvia and Estonia, the 370-million-year-old fossils are from 鈥渁 transitional
half-fish, half-amphibian鈥�, says Per Ahlberg of the Natural History Museum in
London. 鈥淭he most important thing is what happens when the paired fins turn into
arms and legs,鈥� he says, but only a whole skeleton can provide the answer.