Sponge

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Biological Environment > Sponge

Earth Earlier Earlier 700 Million Years ago Later Earth After Animals Later

Animals Without Backbones
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Ralph Buchsbaum et al
March 1987

Encyclopedia of Nature/Science Bundle CD-ROMS

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Invertebrate Zoology (1)

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Paul A. Meglitsch, Frederick R. Schram
January 1991
Heavyweight textbook

Invertebrate Zoology (2)

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Edward E. Ruppert, Robert D. Barnes
January 1994
Classic textbook now in 6th edition

The Garden of Ediacara : Discovering the First Complex Life

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Mark A. S. McMenamin
June 1998

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