WHAT IS A FOSSIL WHAT IS A FOSSIL WHAT IS A FOSSIL WHAT IS A FOSSIL TRACE or REMAINS of something that lived LONG AGO That exposes us to Earths BIOLOGICAL PAST That exposes us to Earths BIOLOGICAL ID: 553523
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Slide1Slide2
There’s more things to study under our feet!Slide3
WHAT IS A FOSSIL?Slide4
WHAT IS A FOSSIL?Slide5
WHAT IS A FOSSIL?Slide6
WHAT IS A FOSSIL?
TRACE
or
REMAINS of something that lived LONG AGO!Slide7
That exposes us to Earth’s BIOLOGICAL (_ _ _ _) PAST.Slide8
That
exposes us to Earth’s BIOLOGICAL (
LIFE
) PAST.Slide9
Where do we find fossils?Slide10
Kid finds mammoth tooth in backyard…
http://www.usatoday.com/tech/science/discoveries/2007-11-06-mammoth-tooth_N.htmSlide11
Kids finds mammoth tooth in backyard…
http://www.usatoday.com/tech/science/discoveries/2007-11-06-mammoth-tooth_N.htmSlide12Slide13
http://article.wn.com/view/2014/05/19/Huge_femur_found_in_Argentina_could_be_biggest_dino_yet/Slide14
Massive dinosaur fossil unearthed by Alberta pipeline crew.Slide15
Show BBC excerpt:
Look at BBC
vid
exerpt: “How did we get here?”…do quiz.http://
www.dailymotion.com/video/x1dp3l7_how-did-we-get-here-the-story-of-science-nova-discovery-history-space-documentary-hd_t
1-8 exploration & archiving diversity
14:22-19 minutes (fossilized Paris)
22:45-27 minutes (age of Earth experiment)
27-33 minutes (Geology inventor, Scottish unconformity—deep time—we are extensions of life)
39-42 Darwin
42-51 Wegener & plate
techtonics
, continental drift & biological evolutionSlide16
Where do we find fossils?Slide17
Where do we find fossils?
Anywhere something must have once lived!Slide18
Where do we find fossils?
Anywhere something must have lived!
But the evidence was NOT destroyed!Slide19
Why won’t we find fossils in IGNEOUS rock?Slide20
Heat destroys any rock record of life.Slide21
Why won’t we find fossils in METAMORPHIC rock?Slide22
All that heat & pressure destroyed any evidence of life…
http://www.childrensmuseum.org/geomysteries/faq1_alt.htmlSlide23
You mostly find fossils in SEDIMENTARY rock
because this rock is formed more
gently…layer by layer.Slide24
Still, even if something dies in soft sediment, very little fossil records remains.
WHY?
https://
www.youtube.com/watch?v=jrSHku6-LFoSlide25
Still, even if something dies in soft sediment, very little fossil records remains.
WHY?
Because of DECOMPOSITION!
https://
www.youtube.com/watch?v=jrSHku6-LFoSlide26
So,
fossils are rare.Slide27
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.Slide28
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
ORIGINAL REMAINS (mummified, frozen in ice, preserved tissue…)Slide29
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
ORIGINAL REMAINS (mummified, frozen in ice, preserved
tissue…DNA)Slide30
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
ORIGINAL REMAINS (mummified, frozen in ice, preserved tissue, amber— DNA!)Slide31
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains (mummified, frozen, preserved in
amber--DNA)
MOLDS (rock IMPRINT/impressions of once living things)Slide32
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains (mummified, frozen, preserved in
amber--DNA)
MOLDS (rock IMPRINT/impressions of once living things)Slide33
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
CASTS (sediment fill up a mold…making 3-D statue)Slide34
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
CASTS (sediment fill up a mold…making 3-D statue)Slide35
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
categories.
1. Original remains (mummified, frozen, preserved tissue)
2. Molds (rock imprint/impressions of once living things)
3. Casts (sediment fill up a mold…making 3-D statue)
TRACE fossils:Slide36
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
Casts (sediment fill up a mold…making 3-D statue)
PETRIFIED (HARD minerals replace cells!)Slide37
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
5 categories.
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
Casts (sediment fill up a mold…making 3-D statue)
PETRIFIED (HARD minerals replace cells!)Slide38
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
categories.
1. Original remains (mummified, frozen, preserved tissue)
2. Molds (rock imprint/impressions of once living things)
3. Casts (sediment fill up a mold…making 3-D statue)
4. Petrified (minerals replace cells!)Slide39
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
3.
Casts (sediment fill up a mold…making 3-D statue)
4.
Petrified (hard minerals replace cells!)
5.
Trace (
records the
ACTIVITY
of plant/animal)Slide40
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
categories.
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
3.
Casts (sediment fill up a mold…making 3-D statue)
4.
Petrified (minerals replace cells!)
5.
Trace (
records the
ACTIVITY
of plant/animal)Slide41
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
categories.
1. Original remains (mummified, frozen, preserved tissue)
2. Molds (rock imprint/impressions of once living things)
3. Casts (sediment fill up a mold…making 3-D statue)
4. Petrified (minerals replace cells!)
5
. Trace (
records the
ACTIVITY
of plant/animal)Slide42
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains
(mummified, frozen, preserved
tissue, amber--DNA)
2.
Molds (rock IMPRINT/impressions of once living things)
3.
Casts
(sediment fill up a mold…making 3-D STATUE)
4.
Petrified
(HARD minerals replace cells!)
5.
Trace
(
records the
ACTIVITY
of plant/animal)Slide43
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
3.
Casts (sediment fill up a mold…making 3-D statue)
4.
Petrified (minerals replace cells!)
5.
Trace (
records the
ACTIVITY
of plant/animal)Slide44
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
3.
Casts (sediment fill up a mold…making 3-D statue)
4.
Petrified (minerals replace cells!)
5.
Trace (records the
ACTIVITY
of plant/animal)
6.
Carbonized
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
3.
Casts (sediment fill up a mold…making 3-D statue)
4.
Petrified (minerals replace cells!)
Trace (records Slide45
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
3.
Casts (sediment fill up a mold…making 3-D statue)
4.
Petrified (minerals replace cells!)
5.
Trace (records the
ACTIVITY
of plant/animal)
6.
Carbonized
(very thin layer of DARK
carbon
covers the rock)
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
3.
Casts (sediment fill up a mold…making 3-D statue)
4.
Petrified (minerals replace cells!)
Trace (records Slide46
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
3.
Casts (sediment fill up a mold…making 3-D statue)
4.
Petrified (minerals replace cells!)
5.
Trace (records the
ACTIVITY
of plant/animal)
6.
Carbonized
(very thin layer of DARK
carbon
covers the rock)
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
3.
Casts (sediment fill up a mold…making 3-D statue)
4.
Petrified (minerals replace cells!)
Trace (records Slide47
Paleontologists (scientists of prehistoric life) usually classify
fossils
into
6 categories.
1.
Original remains
(mummified, frozen, preserved
tissue, amber -- DNA)
2.
Molds
(rock IMPRINT/impressions of once living)
3.
Casts
(sediment fill up a mold…making 3-D statue)
4.
Petrified
(HARD minerals
replace cells!)
5.
Trace
(records the
ACTIVITY
of plant/animal)
6.
Carbonized
(very thin layer of DARK
carbon
covers the rock)
1.
Original remains (mummified, frozen, preserved
tissue)
2.
Molds (rock imprint/impressions of once living things)
3.
Casts (sediment fill up a mold…making 3-D statue)
4.
Petrified (minerals replace cells!)
Trace (records Slide48
MAKE A TABLE:
IS IT A FOSSIL?
sample
Is it
a fossil?
Why
or why not?
If yes,
what kind?
A
B
C
D
E
F
G
H
I
J
K
L
MSlide49
sample
Is it
a fossil?
Why
or why not?
If yes,
what kind?
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R