Question

The list below describes some events which took place at different periods in the geologic time scale.

Answer 1

The correct answer is the following.

The correct order is:

Sea reptiles become extinct > Mammals appear > birds appear.

Marine reptiles started to disappear around the Mesozoic Era. The massive extinction of ichthyosaurs, nothosaurs, and placodonts started at the middle-late Triassic. Early mammal population appeared 180 million ago with the monotremes, a species of animals that lay eggs. 168 million ago appeared the Epidexipteryx, a half-feather dinosaur that could not fly but is considered the first kind of bird.

Answer 2

The right answer for the question that is being asked and shown above is that: "Sea reptiles become extinct > Mammals appear > Birds appear." The list below describes some events which took place at different periods in the geologic time scale. This is the order of the events from the earliest to the most recent