What are reduced forelimbs?

Some articles on reduced forelimbs:

Dinosoor - Classification - Taxonomy
... and niches) †Compsognathidae (common early coelurosaurs with reduced forelimbs) †Tyrannosauridae (Tyrannosaurus and close relatives had reduced forelimbs) †Ornithomimosauria ...

Famous quotes containing the word reduced:

    The physicians say, they are not materialists; but they are:MSpirit is matter reduced to an extreme thinness: O so thin!—But the definition of spiritual should be, that which is its own evidence. What notions do they attach to love! what to religion! One would not willingly pronounce these words in their hearing, and give them the occasion to profane them.
    Ralph Waldo Emerson (1803–1882)