11.   It was more evidence of the species as a possible direct ancestor of the Homo genus.

12.   Lucy may not even be a direct human ancestor, after all.

13.   Lucy may not even be a direct ancestor, after all.

14.   Most paleontologists say that certain theropod dinosaurs were direct ancestors of birds, although some other scientists, particularly ornithologists, do not accept the connection.

15.   Of course, these oviraptorids, having lived much later, would not have been among the direct ancestors of birds.

16.   One day, perhaps, scientists will untangle all those lineages firmly and discover how far back our direct ancestors really go.

17.   The direct lineal ancestor who gave her entry into the Daughters of the American Revolution was Israel Matson of Philadelphia.

18.   The species was once thought to be the direct ancestor of Homo sapiens.

19.   This is the direct ancestor of the electronic games kids play now, minus the noise and the graphics.

20.   Thus, only one of them could have been a direct ancestor of humans, Berger said, and africanus seemed more likely to have been that ancestor.