Fossils Sci. 3.1 Slide 2 Fossil: Preserved remains or traces of
living things Only in sedimentary rock Can tell how, when, and
where a thing lived Slide 3 Question 1 1a. What kind of rocks are
fossils found in? igneous, metamorphic, sedimentary, all of the
above 1b. Fossils can tell what about a living thing? Where it
lived, how it lived, when it lived, all of the above Slide 4
Conditions must be just right Usually a quick burial in sediments
Protected from scavengers, microorganisms, etc Slide 5 Question 2
2a. It is not very likely that an individual organism will become a
fossil. T/F 2b. If an organism is not quickly buried in sediments:
scavengers can tear it up, waves can destroy it, microorganisms can
cause it to decay, all of the above Slide 6 Hard parts More likely
to be fossilized Slide 7 Question 3 3a. Which part of an octopus
would most likely become a fossil? Tentacles, beak, head, all of
the above 3b. Which type of animal would you be more likely to find
fossils of? Snails with shells, slugs without shells, worms,
leeches Slide 8 Permineralized remains Minerals replace original
(partially or completely) Slide 9 Question 4 4a. In some
permineralized fossils, none of the original material that made the
organism is left. T/F 4b. In some permineralized fossils, some of
the original material that made the organism is encased. T/F Slide
10 Carbon films Left over C forms a silhouette Slide 11 Question 5
5a. A carbon film fossil is a three dimensional version of the
original organism. T/F 5b. Carbon film fossils often show details
of the soft parts of an organism. T/F Slide 12 Coal C from
prehistoric plants Slide 13 Question 6 6a. Coal is mainly whats
left over from prehistoric plants. T/F 6b. Coal formation takes a
great deal of: time, pressure, heat, all of the above Slide 14 Mold
Cavity left after organism has decayed Slide 15 Cast A copy of
original made of sediments or minerals Slide 16 Question 7 7a. A
cup cake pan is a: mold, cast 7b. A cup cake is a: mold, cast Slide
17 Original remains Extremely rare Ex: amber, ice, tar Slide 18
Slide 19 Question 8 8a. The most common type of fossils are
original remains. T/F 8b. In which situation could original remains
be preserved for thousands to millions of years? An organism is:
encased in tree sap, frozen in ice, tar, all of the above Slide 20
Trace fossils Footprints, trails, burrows Slide 21 Question 9 9a.
Trace fossils can include actual remains. T/F 9b. Which kind of
fossil is the preserved evidence of past activity? Permineralized,
carbon film, mold/cast, trace Slide 22 Index fossils Common species
that existed for a short time Slide 23 Question 10 10a. A good
index fossil is of an organism that was: common/abundant, rare, not
widely distributed 10b. A good index fossil is of an organism that:
existed for a long time, existed briefly, lived in only specific
places Slide 24 Fossils describe ancient environments Slide 25
Slide 26 Question 11 11a. What type of terrain was here 310 million
years ago (when we were below the equator)? Swamps, deserts, deep
seas, shallow seas 11b. Was this area above or below the equator
310Ma (Mega-annum)? Above, below
