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.
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 <span>order of the events from the earliest to the most recent</span>
The British adopted a clever strategy in India when it came to administering their new territories. The British tended to rule through these elites. They used them to collect taxes and enforce law and order, and in return, they were allowed a measure of autonomy in their local areas.
Texas is a large state with a wealth of energy resources and leads the nation in energy production. The state provides more than one-fifth of U.S. domestically produced energy.
