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| Milestones of
Vertebrate Evolution |
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| This incredible
poster presents a tremendous amount of information in an easily
understandable design. Along the left edge, the major milestones
(physical developments) in vertebrate evolution are shown and
described. The main design is an “Evolution Tree” superimposed over
a geological time chart. The milestones are marked on it to show the
resulting animal clades. The beginning and end of each branch shows
when they lived; the thickness of the branch indicates their
relative abundance or scarcity during each geological era. 119
species are shown, all in the proper era. This makes it easy to
determine which animals lived at the same time. Interesting insets
explain what the poster shows. |
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The amniotic egg was one of the most important developments
in vertebrate evolution. Eggs have a semi-permeable shell
that protects the embryo from drying out. The yolk provides
a food source. It was this self-contained means of
protecting and feeding the unborn that permitted tetrapods
(the first land animals) to live in environments far from
water. Amniotes are a major clade. It includes all reptiles,
mammals and birds. |
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Ichthyostega. An early pre-amniotic tetrapod |
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Standard poster is large 24" x 36"
size that fits standard frames. Printed on heavy, acid-free paper
using non-fade inks, then coated to provide satin finish and provide
protection from scratching. Laminated poster is completely encapsulated in
heavy 3 mil
plastic for long life. |
| Standard Poster: |
No. GS410-ES |
Only $9.95 |
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| Laminated
Poster: |
No. GS410-EL |
Only $14.95 |
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