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Display Chart - Animal Development


Product Description

24" x 36" Heavy Laminated This innovative poster represents the first time the animal kingdom has ever been shown through the development of the animals’ physical characteristics. It graphically explains 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. Primitive sponges and jellyfish were the first animals. Then came the addition of a third cell layer, resulting in a third clade. The poster begins 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. The presentation shows how the various groups are related to one another, making it easy to understand their similarities 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, shown below.

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