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.
Synonyms: heavy, weighty, hefty, massive, ponderous. These adjectives mean having a relatively great weight. Heavy refers to what has great physical weight (a heavy boulder) and figuratively to what is burdensome or oppressive to the spirit (heavy responsibilities).dj. 1. heavy-of comparatively great physical weight or density; a heavy load; lead is a heavy metal; heavy mahogany furniture. light-of comparatively little physical weight or density; a light load; magnesium is a light metal--having a specific gravity of 1.74 at 20 degrees C.