A fish from China has displaced its European relatives to become the
oldest known gliding fish. A near-complete skeleton of the fish, named
Potanichthys xingyiensis, was found near Xingyi in Guizhou province in
southwest China.
Potanichthys had well-developed pectoral fins, like modern flying fish.
But what seals the deal for gliding flight is the fish's forked,
asymmetrical tail, which had a chubby lower lobe similar to that seen in
flying fish today.
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