Name______________ Partner_______________ Date: _____
Period:__________ SCORE:_________/20
NATIONAL
SCIENCE EDUCATION STANDARDS IN BOTH LIFE SCIENCE AND EARTH & SPACE SCIENCE (NCR
1996).
TERMS: SUPERPOSITION, BIOSTRATIGRAPHY,
CORRELATION,
Biogenic,
ABiogenic.
FORAMINIFERA-LATIN “BEARING PORES OR
OPENINGS”
CHARACTERIZATION:
“SPIDERS
OF THE
FORAMS ARE MARINE PROTISTS THAT LIVE IN THE
WATER COLUMN OR IN SEDIMENTSON THE OCEAN FLOOR. (CALCIUM CARBONATE) SHELLS THAT
BECOME PART OF THE FOSSIL RECORD.
MANY SPECIES ARE KNOWN, BOTH FROM THE FOSSIL
RECORDAND FORM LIVING ASSEMBLAGES OF MARINE FAUNA.
SOME GENERA HAVE BEEN FOUND AS EARLY AS THE CAMBRIAN TIME (MOST EXTINCT).
SOME BEACH SANDS CONTAIN OVER 50,000 FORAM SHELLS PER GRAM.
THERE ARE SIX BASIC SHAPES OR FORMS WELL
REPRESENTED BY SIX GENERA.
IN SOME PLACES ON THE DEEP OCEAN FLOOR, FORAM
SEDIMENTS ARE HUNDREDS TO THOUSANDS OF METERS DEEP.
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PROBLEM: DR. ROCKEL HAS SENT YOU A SAND
SAMPLE TO DETERMINE THE AGE OF THE SAND. DINOSAUR EGGS HAVE BEEN FOUND IN THIS
SAND LAYER AND SHE NEEDS TO KNOW THE AGE OF THE SAND.
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MATERIALS:
MICROSCOPE/ HAND LENS,TOOTH PICK/ TAPE
OR GLUE/ INDEX CARD STRIPS/BLACK PAPER
PROCEDURE: STUDENTS PICK OUT FORAMS WITH
WET TOOTH PICK AND GLUE THEM TO THE BLACK PAPER.
MAKE A MICROSCOPE SLIDE OF OTHER FOSSILS LIKE: CORAL,
STINGRAY OR SHARKS TEETH.
LATER: STUDENTS
USING THE FORAM /SHARK TEETH KEY AND THE
FORAM TIMELINE IDENTIFY THE FORAMS/SHARK TEETH AND WHEN THEY WERE DISTRIBUTED
THROUGHOUT GEOLOGIC TIME.
1. DESCRIBLE THE SAMPLE:____________________________________________________________
______________________________________________________________________________________
2. SAND PARTICLE
SIZE?
FINE
MEDIUM
COARSE DOES IT
MATTER IN FIDING FOSSILS?
YES
NO
3. IS THERE DIFFERENT COLOR OF SAND PARTICLES?
__________________________________
4. OTHER BIOGENIC MATERIAL IDENTIFIED?___________________________________________
5. OTHER A BIOGENIC MATERIAL IDENTIFIED?_________________________________________
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CONCLUSIONS:
DID YOU IDENTIFY THE AGE OF THE FORAMS (GIVE
PERIOD)?________________________________________
DID YOU IDENTIFY THE TYPE OF FORAM
(GIVE NAME)? ______________________________________________
DID YOU IDENTIFY THE AGE OF THE SHARKS TEETH (GIVE
PERIOD)?__________________________________
DID YOU IDENTIFY THE TYPE OF THE SHARKS TEETH
(GIVE NAME
2)?__________________________________
WHAT KIND OF ENVIRONMENT WAS THE FOSSILS
DEPOSITED IN?_____________________________________
_______________________________________________________________________________________________________
* OPTION:
RESEARCH AND PREPARE A REPORT.
INCLUDE THE
100% CONCLUSIVE?
______ OTHER
EQUALLY SUPPORTABLE HYPOTHESES?
_____