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Sometimes referred to as pterodactyls, pterosaurs were the
first vertebrates known to have been able to fly. They suddenly
appear in the fossil record during the late Jurassic period,
around 220 million years ago. These first species were fully
developed and have baffled paleontologists as there are no
fossils to provide even a hint as to their origin or how they
evolved.
Pterosaurs became extinct at the end of the Cretaceous
period, 65 million years ago. They were an incredibly successful
group of animals. During the 155 million years that they
dominated the skies above the earth, they constantly evolved
into new forms. This exciting new poster explores their
incredible diversity. The picture captions cite biological and
common names, where the fossils were found, when the animals
lived and their wingspan. Each is also accompanied by terse text
explaining its uniqueness and importance. At the bottom of the
poster, anatomical illustrations and text are used to explain
the differences between the wings of birds, bats and pterosaurs.
This is a truly beautiful poster. The species were illustrated
by a paleontologist and are shown against a dramatic sky
background. |
| 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 UV rays and scratching.
Laminated poster is standard poster encapsulated in heavy 3 mil
plastic. |
| Laminated: No. GA411-PL. Only $14.95
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| Standard: No. GA411-PS. Only $9.95 |
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