Dating the fossil record worksheet
Paulette SW00 -- --» ﬁlament Specimen ,9 Species ﬂ ' Species 12 Procedure: _ l.
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The absolute age of the fossil can be determinedthoughradiometric daﬁnganddeterminingthelayer ofrockinwhichthe fossil was found.
Older layers are fmmd deeper within the earth than newer layers.
This rapid change is attributed to a mutation in a few Graduates: mantra became larger, segments fused GZ®4« Punctuated equilibrium: head charmed shape, loss of 939mm Speciation The fossil record cannot acctu‘ately determine when one species becomes another species.
However, two hypotheses regarding speciation also exist.
The term "lower" means an earlier time period, fossils ﬁ'om a "lower" time period should be place toward the older time periods.
The Tree of Life Web Project (To L) is a collaborative effort of biologists and nature enthusiasts from around the world.
During a certain period, the fossils will split into two branches.
In other words, one fossil from that period will ‘ show one type of change, and another fossil will show a a ' different change.
wide) ‘ ' 5 inches - WWW” 995,000 5 inches I ' Idahoan (the present) 2.
The group of "fossils" you will work'with are ﬁcticious animals.
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For instance, an organism that shows a fossil record of gradually increased size in small steps, or an organism that shows a gradual loss of a structure.