The boundary between this portion of the geologic timescale and its predecessor is defined using the DababiyaQuarry section of Egypt, which marks the base of its first subdivision, the Ypresian.
The boundary between this portion of the geologic timescale and its predecessor is defined using the DababiyaQuarry section of Egypt, which marks the base of its first subdivision, the Ypresian. It saw the end of the Laramide Orogeny, and it ended with an extinction event known in Europe as the Grande Coupure. It also ended with a transition to an icehouse climate, while it began during an event marked by the release of huge amounts of carbon into the ocean and atmosphere and a global increase in temperature of about 5 to 8 degrees; that event is the Thermal Maximum named for this epoch and its predecessor. It is the second epoch of the Tertiary and Paleogene Periods, and of the Cenozoic Era. For 10 points, name this epoch bookended by the Paleocene and Oligocene epochs, whose name derives from the appearance of modern mammals and other groups, or the dawn of recent life.
The boundary between this portion of the geologic timescale and its predecessor is defined using the DababiyaQuarry section of Egypt, which marks the base of its first subdivision, the Ypresian.
Eocene Epoch [accept Ypresian Age before Ypresian is mentioned]