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Animal Development Poster -Laminated
Animal Development Poster -Laminated
 
Animal Development Poster -Laminated
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Description
 
This exciting new poster is the first time the animal kingdom has ever been shown through the development of physical characteristics. It graphically demonstrates how the main branches of the new cladistic classification system were established. A clade is a group of organisms that share a common physical characteristic.

Animals differ from other life forms in that they have at least two cell layers. This characteristic defines the Metazoa (Animal Kingdom) clade. The next major physical development was the addition of a third cell layer. All animals have them, except the primitive sponges and jellyfish. Thus each of these three groups is a clade.

The poster starts with the simplest animals then progresses to the most complex, showing all of the important changes A branching system design presents the nine primary clades, which are then divided to the next level. Detailed illustrations show many representative species. All are identified by captions.

This poster is largely devoted to the invertebrates and the presentation shows how the various groups are related to one another. It makes it easy to understand their common physical characteristics and their differences. The vertebrates are summarized in the lower right corner. The complexity of the subject resulted in them being treated separately in Milestones of Vertebrate Evolution.

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