the coracoid).

These bones are such remarkable anticipations of the same parts in ordinary (_i.e._ carinate) birds {71} that it is hardly possible for a Darwinian not to regard the resemblance as due to community of origin.

This resemblance was carefully pointed out by Professor Huxley in his "Hunterian Course" for 1867, when attention was called to the existence in _Dimorphodon macronyx_ of even that small process which in birds gives attachment to the upper end of the merrythought.

Also Mr.Seeley[53] has shown that in pterodactyles, as in birds, the optic lobes of the brain were placed low down on each side--"lateral and depressed." Nevertheless, the view has been put forward and ably maintained by the same Professor,[54] as also by Professor Cope in the United States, that the line of descent from reptiles to birds has not been from ordinary reptiles, through pterodactyle-like forms, to ordinary birds, but to the struthious ones from certain extinct reptiles termed Dinosauria; one of the most familiarly known of which is the Iguanodon of the Wealden formation.

In these Dinosauria we find skeletal characters unlike those of ordinary (_i.e._ carinate) birds, but closely resembling in certain points the osseous structure of the struthious birds.