Within a few million years, two important amniote lineages became distinct: the synapsids, which would later include the common ancestor of the mammals; and the sauropsids, which now include turtles, lizards, snakes, crocodilians, dinosaurs and birds.
The definition of burly is big, strong and rough. An example of a burly person is a muscular lumberjack. -Â·lier, -Â·liÂ·est. big and strong; heavy and muscular. rough and hearty in manner; bluff.
thin or slight; light and graceful: slender youths. 3. small in size, amount, extent, etc.; meager: a slender income. 4. having little value, force, or justification: slender prospects. [1350â1400; Middle English s(c)lendre, of obscure orig.] slenâ²derâ¢ly, adv. slenâ²derâ¢ness, n. syn: slender, slight, slim imply a tendency toward thinness.