Wagner says: "the identity of these epidermic structures with true birds' feathers is by no means proved;
(Wagner; says; the identity of these epidermic structures with true birds' feathers is by no means proved) Context(Wagner says,List([0, 11))):(the identity of these epidermic structures with true birds' feathers; is; by no means)
Wagner says,List([0, 11))
Wagner the identity of these epidermic structures with true birds' feathers
says is
the identity of these epidermic structures with true birds' feathers is by no means proved
by no means