Week 1 Day 2 History of Life on Earth

What is the Proterozoic Eon known for?

The first eukaryotic organisms.

Which eon marks the beginning of life on Earth, which features prokaryotic life.

The Archaean Eon

What does 'well-displayed life' refer to in the Phanerozoic Eon?

The abundance of fossils of plants and animals identified from this eon.

What are the three eras of the Phanerozoic Eon?

Paleozoic, Mesozoic, and Cenozoic.

What significant event occurred during the Cambrian Period?

The Cambrian explosion, which resulted in a rapid increase in animal diversity.

Echinoderms, Arthropods, Mollusks, and Chordates. These animals emerged during what event

Cambrian explosion

Warm temperatures, diverse marine invertebrates, and the formation of glaciers toward the end. Which period?

Ordovician period

What significant change occurred at the end of the Ordovician Period?

A mass extinction of marine invertebrates.

1. A stable climate

2. rise of ocean levels

3. appearance of coral reefs

4. terrestrial vascular plants

what period?

Silurian Period

What is the 'Age of Fishes' referring to?

The Devonian Period, known for the emergence of many fish species.

Diversification of plants and animals, emergence of flying and giant insects, and rich coal deposits formation. Which period

Carboniferous Period

1. Reptiles were the dominant vertebrates

2. The end was the largest known mass extinction, affecting 90-95% of marine species. Which period

Permian Period

The 'Age of Dinosaurs,' marked by the dominance of reptiles. Which era

Mesozoic Era represent

Hot and dry conditions with the emergence of the first dinosaurs and mammals. Which period

Triassic Period

Dominance of gymnosperms and reptiles, emergence of bird-like animals. Which period

Jurassic Period

What significant event marked the end of the Cretaceous Period?

A mass extinction event that led to the demise of the dinosaurs.

The most recent 65 million years, known as the age of mammals.

Cenozoic Era

Rapid expansion and diversification of mammals, birds, and the emergence of whales. Which period

Tertiary Period

It includes periodic Ice Ages and the evolution of modern humans. Which period

Quaternary Period

What are the two epochs of the Quaternary Period?

Pleistocene and Holocene.

The current epoch, characterized by the rapid growth and impact of human species.

Holocene epoch

A proposed epoch highlighting significant human impact on the planet.

What is the Anthropocene?

The ongoing sixth mass extinction affecting various species such as fungi, plants, animals (mammals, birds, reptiles, amphibians and fish) due to habitat degradation.

The holocene extinction

what era is associated with ancient animal life

paleozoic era

transport water, sugar and salts throughout the plant body

vascular plants

vegetation, first trees and forests formed, insects and invertebrates became plentiful (ex. tetrapods) which period

devonian period

what is a meganeura and an arthropleura

big dragon fly, big centipede

eggs that contain an amnion to protect the embryo (amnion = fluid filled membranes)

amniotic eggs

babies have a much different body plan than adult

metamorphisis (ex. butterfly vs. cacoon)

mezozoic era is divided into what 3 parts

1. cretaceous

2. jurassic

3. triassic

at the end of the triassic period a mass extinction occured due to

volcanic eruptions

during what period did flowering plants (angiosperms) emerge

cretaceous

what are the 2 periods that the cenozoic era are divided into

teritary and quaternary

modern humans, chimpanszees, gorillas and orangutans plus all their recent ancestors (basically things that walk on 2 feet)

what are hominids

homosapien translates to

wise man (it is the most efficient body type)

which epoch is related to ice age

pleistocene epoch

what are the 4 stages of pleistoscene epoch

gelasian, calabrian, chibanian, upper pleistocene

which epoch is related to archaic humans

pleistocene epoch

• Little change in diversity 

• Climate change impacted gas emissions

• which epoch?

holocene epoch

example of anthropocene epoch

high levels of waste product (like plutonium and elevated carbon and nitrates) in crawford lake, ontario

true or false, the anthropocene epoch was accepted

false, it was rejected in 2024

which epoch is considered most new

pleistocene epoch

“entirely new”

THE AGE OF MAN

which epoch

holocene epoch

“The time during which humans have had a substantial impact on our planet” which epoch

anthropocene