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Scylla posted a topic in Fossil NewsSynchrotron radiation shows 100 million year old slime and helps redraw fish family tree https://phys.org/news/2019-01-fossilized-slime-million-year-old-hagfish-vertebrate.amp
The coelacanth, lamprey and hagfish all share the status of being relicts having survived nearly unchanged for 400 million years. why are these organisms still present on earth when many of their relatives when extinct? What aspects of their biology or ecology allowed for this? Do these fish add support of controversy to the theory of evolution by natural selection? EDIT: The author is going to reword this inquiry; as there have been responses, we will wait and merge/delete as necessary.