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.
Information About a Semi Trailer or Truck Trailer. Definition of a semitrailer, semi-trailer or truck trailer: A semi-trailer is a trailer without a front axle. A large proportion of its weight is supported either by a road tractor or by a detachable front axle assembly called a dolly.