The arm-muscles have been studied in an absolutely exhaustive manner by Fiirbringer, who in his monumental work has tabulated and then scrutinized the chief characters of fourteen selected muscles.
In 1888 there was published the huge monograph by Max Fiirbringer entitled Untersuchungen zur Morphologie and Systematik der Vogel.
Fiirbringer supposes that birds must have begun with toothed forms of small or moderate size, with long tails and four lizard-like feet and bodies clothed with a primitive kind of down.
In the course of this evolution there were many cases of arrest or degradation, and one of the most novel of the ideas of Fiirbringer, and one now accepted by not a few anatomists, was that the ratites or ostrich-like birds were not a natural group but a set of stages of arrested development or of partial degradation.
Halcyoniformes Coraciiformes Whilst Fiirbringer was engaged on his gigantic task, Dr Hans Gadow was preparing the ornithological volume of Bronn's Thies-Reich.
Fiirbringer, however, separated Apteryx with Dinornis from the rest, combining his "Apteryges" with Crypturi and Ga Ili as Alectorornithes, the latter being practically A.
In this respect Max Fiirbringer and T.