380 million year old fish found with unborn embryos.

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blobrana

Registered Senior Member
"In 2005 Museum Victoria’s expedition to the Gogo fossil sites in north Western Australia, lead by Dr John Long, made a swag of spectacular fossil discoveries, including that of a complete fish, Gogonasus, showing unexpected features similar to early land animals.
Today the team announced its latest discovery: a remarkable 375 million year old fossil placoderm fish with intact embryo and mineralised umbilical cord."

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blobrana said:
"In 2005 Museum Victoria’s expedition to the Gogo fossil sites in north Western Australia, lead by Dr John Long, made a swag of spectacular fossil discoveries, including that of a complete fish, Gogonasus, showing unexpected features similar to early land animals.
Today the team announced its latest discovery: a remarkable 375 million year old fossil placoderm fish with intact embryo and mineralised umbilical cord."

Read more
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Interesting stuff - as the placodermi didn't last very long in evolutionary/geological terms and were effectively a dead end, I wonder if this means that placental gestation across vertebrate taxa is an example of convergent evolution, or that it developed in even earlier taxa of the vertebrata and radiated across the members of the entire sub-phylum?
 
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