I need to create a timeline for major geological events in earth history. There are 20 given events. I need you to..

1. create a list of such events in chronological order in a citation form (examples below)

2. find 5 ADDITIONAL major geological events and add it too the above list

3. write a 100-word explanation of why those five. (100 words for all five collectively, not each)

 Example: 
Each entry must include a date, a label (including the genus (Italicized) for organisms marked with an asterisk), and a source. 

Here are two examples of appropriate labels to get you started: 

4.5 Ga. Formation of the Moon. (M. Barboni et al. Early formation of the Moon 4.51 billion years ago. Sci. Adv. 3, e1602365 (2017)) 
or 
70 Ma. Favorite Cretaceous dinosaur. Therizinosaurus. (https://en.wikipedia.org/wiki/Therizinosaurus)