The Geological Timescale is split into fours Eras. These are broadly obvious from significant transitions between sequences of sedimentary formations. The Precambrian is obviously very different to everything above it.
Eras, Periods and Epochs
Angiosperm Mass Extinction
"Many genera of angiosperms became extinct". Their habitat got buried in a world-wide flood. The deposits were subsequently buried so deep that there was no way for the seeds to germinate and reach sunlight.
Distinctive Forests
"Subtropical climates with heavy rainfall supported distinctive forests in northern and southern latitudes." This is another example of the circular reasoning which lies at the very heart of the geological timescale.
Heavy Rainfall
Scientists disguise the evidence of a worldwide flood by using jargon which is something other than a worldwide flood, but this one is a dead giveaway. "Heavy rainfall." How heavy? 40 days and nights to be exact.
Lemurs and Birds
"First lemurs; some modern groups of birds". Modern is a concept in the evolution narrative. The Paleocene is recent, therefore according to the narrative anything different about it can be called modern. It's meaningless.
Magnoliaceae, Lauraceae and Juglandaceae
"Angiosperms having affinities with Magnoliaceae, Lauraceae, Juglandaceae". This may seem random but it's nuanced evolution narrative, you just have to know something about the development of Angiosperms.
Trend From Temperate Climates to Subtropical
"Trend from temperate climate to subtropical". That sounds suspiciously like a way to say that it started raining a lot. Some seasonal variations? No kidding? It started raining, then it stopped raining.
The Theory of Noah’s Flood
We have a collection of predictive testable hypotheses which authenticate physical evidence of Noah's flood with the account in scripture. In science a collection of hypotheses which support a premise is called a theory.
A World-wide Anoxic Event
Anoxic means without Oxygen. All around the world we see contemporaneous evidence of a mass extinction of marine life caused by the depletion of oxygen in the water.
Iridium abundance maxima in the Upper Cenomanian extinction interval
Two iridium abundance peaks, both 0.11 ppb (whole‐rock basis) over local background of 0.017 ppb, have been found in Middle Cretaceous marine rocks near Pueblo, Colorado.