Fossils and the Fossil Record

G3 T7 Fossils L2 Fossils as a record

Objective: I can describe what a fossil record is.

Do Now

1- Which statement is correct?

a-The fossils in the top rock layer are older than the fossils in the bottom layers.

b-The fossils in the bottom rock layers are older than the fossils in the top rock layers.

2-A scientist found a sea creature in the desert, this gives evidence that this area was covered by (sand/mud/seawater) millions of years ago.

3-Which animal from the following can form an amber fossil? (mammoth/ spider/ dinosaur)

4- Define Data

The Fossil Records

• Scientists use the informations they gather from rocks and fossils to know what Earth was like through out it's history.

Fossil Record

• A record of Earth's past is found in the layers of rocks and the fossils within them

• Scientists can look at these fossils and find patterns

• They have created a fossil record.

Fossil Record

The total number of fossils found

The fossil record gives a clue of how animal changed over time

Scientists used information from the fossil record to organize earth's history into units of time

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Fossils as a Record

T7 Fossils L2 Fossils as a Record

Objective: I can describe the Earth's Era's

1- A mark left by the animals millions of years ago, best describes (body fossil/trace fossil/mold fossil)

2-A small animal trapped in tree resin millions of years ago, this can form ________(cast fossil/mold fossil/amber fossil/fossil in ice)

3- what happened next to an animal that died millions of years ago to form a fossil?

(formed a mold fossil/formed a cast fossil/covered by mud and sand)

4- Define Fossil Record

Fossil record

• Scientists have used the information from the fossil record to organize Earth's history into units of time (Eras)

Paleozoic Era

• Early animals in this era lived in the sea

• they didn't have Jaw (Jawless fishes)

• a mass extinction happened

Mesozoic Era

• Dinosaurs lived in the land, sea, and sky.

• A mass extinction happened

Cenozoic Era

• The era of the monkeys, apes, and humans

Earth's Eras

• Paleozoic era (Jawless sea animals)

• Mesozoic(dinosaurs)

• Cenozoic (Monkeys, apes, and humans)

• Mass extinction after paleozoic and mesozoic)

Index Fossils

Scientists can use other fossils from the same rock layer to know the age of fossils.

Index Fossils

Fossils of organisms that lived for a short known time.

Do Now

1-An empty space that once held thae animal remains(mold fossil/ cast fossil)

2- Which animal can form an amber fossil(mammoth/bird/spider)

3- Define trace fossil

4-Which one is a body fossil(footprint/ plant fossil/ eggnest)