- Oldest known sponge pushes back date for key split in animal evolution
- Getting the date right is important for understanding the timing and course of animal evolution, because the split between the sponges and most other animals (called the Eumetazoa) was a key event in the early history of life on Earth.
- 600 Million Year Old Sponge Fossil Challenges Previous Geological Findings
- This new discovery indicates that the common ancestors of both, the sponges and the Eumetazoa might have lived much earlier than predicted by most of the scientists. Since most of the sponges and eumetazoans differ in many genetic features, this ...
Eumetazoans is described in multiple online sources, as addition to our editors' articles, see section below for printable documents, Eumetazoans books and related discussion.
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