A new concept by Guy Narbonne that many early Ediacaran animals were modular, consisting of frond-like structures that were grown in many different ways to yield many different-looking fossils, often large ones. However, they were all variations on a theme, so can be considered as an evolutionary group, the rangeomorphs. Their zoological affinities remain uncertain, though they are probably not outrageously different in an ecological sense from colonial creatures like many cnidarians.
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Unknown groups: hyolithids
Page last updated, November 17, 2004.
All links last checked, September 29 2005. My own illustrations from the book are misplaced, and I will get those URLs corrected soon.
[For images for Chapter 4, click here ]
[For images for Chapter 6, click here ]
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