Paleozoic Era Life starts in the seas and moves onto land

Slides:

Advertisements

Similar presentations

Earth Science 13.2A Paleozoic Era : Life explodes

Advertisements

Organized into divisions based on major changes

The geologic time scale shows Earth’s past.

Precambrian Era (put these events in order) Photosynthetic Cyanobacteria (blue-green algae) create oxygen gas which began to form our atmosphere Oceans.

Earth History The Paleozoic Era. Paleozoic Time ( Million Years Ago) n Bracketed by the two most important biological events in Earth’s history:

Review – Geological Time Scale. Refer to pink sheet in NB: 2 Questions: 1. Put the following organisms in order from those that appeared first on Earth.

Life in the Paleozoic Era Chapter 13 Section 2. The Cambrian Period The Cambrian Explosion: a span of about 15 million years when many new types of invertebrates.

End Show Slide 1 of 30 Copyright Pearson Prentice Hall Biology.

Paleozoic Era Life starts in the seas and moves onto land

Fossils and Geologic Time Scale Chapter 17. What’s It All About Essential Question: Can relative dating and relative frequency be a trusted thing? Objectives:

Evolution of Multicellular Life Precambrian - all periods before the Paleozoic era – 90% of Earth’s History – fossil evidence is contained in stromatolites.

PALEOZOIC ERA Age of sea-life. CAMBRIAN 542 mya Gondwanaland- mainly in S. Hemisphere “waterworld”

Section 2: Precambrian Time and the Paleozoic Era

Earth Science 13.2B Paleozoic Era : Life explodes

Earth’s History & Geologic Time Notes

Foothill High School Science Department The History of Life Evolution of Multicellular Life.

This time period is known as the Cambrian explosion.

THE PALEOZOIC ERA By: Andrés Fajardo, Mauricio Buendía, Álvaro Vivas, and Juanita González.

“explosion of life” “Explosion of Life” Paleozoic Era

Geologic Time Scale Chapter 17. Formation of Earth 4.6 billion years old Took 100 million years to form.

17-3 Evolution of Multicellular Life

The Paleozoic Era has 6 different periods. The Permian, Carboniferous, Devonian, Silurian, Ordovician, and Cambrian.

Chapter 13 Section 2 Paleozoic Era: Life Explodes

This period is about 5 times as long as the Paleozoic and Mesozoic combined, a very long time. Less is known about it than the younger time periods. The.

Earth's Timeline.

Section 6 – Eras of Earth’s History

Life and Geologic Time  Majority of life in the history of Earth, 4.6 billion years, is confined to the past 600 million years.  This life as outline.

Paleozoic Era By: Mark Aguayo. 6 Time Periods Cambrian Cambrian Ordovician Ordovician Silurian Silurian Devonian Devonian Carboniferous Carboniferous.

Paleozoic Era 570,000,000 yrs ago to 225,000,000 yrs ago Life starts in the seas and moves onto land Six periods: Cambrian Ordovician Silurian Devonian.

6/23/2016AF Carpinelli 1 The Paleozoic World Life Takes Hold…

Precambrian Time and the Paleozoic Era

87% 4.6 Precambrian  Earth was completely molten  No water  No atmosphere  No land  No life.

(7th) Chapter 8-5 Cornell Notes

Chapter 7: Concepts of Time

Diversity of marine animals, and extinction events over geologic time.

Geographic Time 8.E.6A.1Develop and use models to organize Earth’s history (including era, period, and epoch) according to the geologic time scale using.

Geologic Eras Today’s Goal

1/7 DO: Today we will continue learning about the history of Earth.

PALEOZOIC ERA KNOWN AS THE AGE OF FISH OR TRILOBITES.

Geologic Time Unit 8.5.

Section 2: Precambrian Time and the Paleozoic Era

The Fossil Record.

Environmental Science

Geologic History.

Paleozoic Era 540,000,000 yrs ago to 250,000,000 yrs ago

Geological timeline events

Geologic Time Review Game

Warm up Put EON, PERIOD, AGE, EPOCH, ERA in order from largest to smallest.

Materials: Pencil Notebook Notes highlighter Bell work

Section 2: Precambrian Time and the Paleozoic Era

Cambrian period, ~525mya. Gondwana (southern continent) beginning to form.

Section 2: Precambrian Time and the Paleozoic Era

GEOLOGIC TIME SCALE. GEOLOGIC TIME SCALE The GEOLOGIC TIME SCALE is a record of the history of the Earth, based major geologic & biologic events.

Falcon Focus 1. A cowboy rides into town on Friday.

A Quick Look at the History of Life on Earth Part 2

What is Mass Extinction?

A Trip Through Geologic Time

Dominant life forms of the past: some very broad generalizations Precambrian: prokaryotes Cambrian-Ordovician: marine invertebrates, algae Silurian-Devonian:

Copyright Pearson Prentice Hall

And changes in organisms

Section 2: Precambrian Time and the Paleozoic Era

LECTURE 4: PALEOZOIC ERA Cambrian/Ordovician Periods

17-3 Evolution of Multicellular Life

Evolution of Multi-cellular Life

Geologic time is a difficult concept to grasp. 12 hours

2014 Mrs. Hughes 8th Grade Science Geologic Time Shows Earth’s History.

Presentation transcript:

Paleozoic Era Life starts in the seas and moves onto land 570,000,000 years ago to 225,000,000 years ago Six periods: Cambrian Ordovician Silurian Devonian Carboniferous Permian

Cambrian Period (570-500 MYA) Cambrian Explosion – Most major animal phyla are found in the fossil record (mostly aquatic invertebrates with exoskeletons). Burgess Shale – major fossil site located in Canadian Rockies

Ordovician Period (500-435 MYA) 1st vertebrates - jawless fish (filter feeders) The vertebrate protects the spinal cord, which carries signals from the brain throughout the body. The lamprey of today is a parasite. The hagfish is a scavenger.

Silurian Period (435-395 MYA) 1st jawed fish (later evolved into sharks-made of cartilage). Ozone (O3) layer formed which blocks harmful UV radiation; life could evolve on land. 1st land plants (mosses & ferns) followed by 1st land animals (arthropods-spiders & scorpions).

Devonian Period (395-345 MYA) “Age of the Fish” (giant armored fish). 1st bony fish (scales and swim bladder for buoyancy).

Devonian Period (395-345 MYA) 1st vertebrates on land – amphibians Evolved from the lobed-fin fish which include some species of lungfish.

Carboniferous Period (345-280 MYA) North America is at the equator (tropical swamps form coal deposits) Amphibians & insects dominate and become large (dragon flies-1m wing span; cockroaches-10 cm long). 1st reptiles

Permian Period (280-225 MYA) Reptiles dominate. Pangaea begins to form (Appalachian Mnts; dry climate; ice age in the southern hemisphere) Mass Extinction (90% of all species go extinct-mostly marine invertebrates). Early Permian reptiles, Cacops in front & Casea in back. The middle Permian reptile, Anteosaurus.

Mass Extinction One of the Big FIVE Mass Extinctions