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The Origins of Those Sexual Organs: a Fishy Tale Much More Primitive Than Previously Thought

posted by martyb on Friday July 20 2018, @01:18PM   
from the mermaid:-a-fishy-tail-tale dept.

Phoenix666 writes:

Phys.org:

Fossil discoveries from the Devonian rocks of Scotland and Australia first revealed that the earliest jawed fishes, the placoderms, reproduced using copulation in much the same way as sharks and rays do today.

They also had the first paired pelvic skeletons, the precursor to the hind paired fins – and legs – of all animals. Their paired reproductive organs, called "claspers", probably developed in the same way as limbs.

The appearance of jaws and teeth in the first vertebrates was thus intimately linked to the origin of paired hind limbs (pelvic girdles) and an advanced kind of sexual reproduction.

The researchers found evidence that anatomical developments that enable copulation appeared earlier, in jawless fishes.

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Original Submission

• Re:Don't care where it came from Re:Don't care where it came from (Score: 1, Funny) by Anonymous Coward on Friday July 20 2018, @02:40PM (1 child)

  by Anonymous Coward on Friday July 20 2018, @02:40PM (#709935)

  TMI
  TMI
  TMI
  TMI
  TMI

  the googles! they do nothing! how do I unsee this?

  Parent

  Starting Score:	0		points
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  Funny=1, Total=1
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• Re:Don't care where it came from (Score: 0) by Anonymous Coward on Friday July 20 2018, @02:45PM

  by Anonymous Coward on Friday July 20 2018, @02:45PM (#709938)

  Just don't visit his http://redtube.com [redtube.com] site cause there's all sorts of visuals there no one needs to see

  Parent