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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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The Origins of Those Sexual Organs: a Fishy Tale Much More Primitive Than Previously Thought
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New crypt. See /usr/news/crypt.
(Score: 5, Funny) by DannyB on Friday July 20 2018, @04:52PM (5 children)
You may not care. The science of how it came to be DOES matter to some people. "I care" -- Luke Skywalker.
George W Bush, Obama and Trump are discussing the shape of the male organ of copulation. Focusing on the underlying evolutionary reason for the shape.
George W: the shape is to give pleasure to the man.
Obama: the shape is to give pleasure to the woman.
Trump: the shape is so tiny hands don't slip off the tiny end
The lower I set my standards the more accomplishments I have.
(Score: 2) by hendrikboom on Friday July 20 2018, @08:20PM (4 children)
The evidence (sorry, I have no references) seems to be that the penis evolved from sexual selection. That is, the penises women enjoyed the most were the ones most likely to reproduce.
Women have the major influence here, because they are in short supply. It takes at least nine months of a woman's life to reproduce, but only a few minutes of a man's.
(Score: 0) by Anonymous Coward on Friday July 20 2018, @10:08PM (3 children)
Nonsense. You grab them by the pussy, their enjoyment has little to do with it speaking in evolutionary terms. Remember, the female orgasm wasnt even invented until 1956.
(Score: 2) by realDonaldTrump on Friday July 20 2018, @10:54PM (2 children)
We're Making America Great Again!
(Score: 0) by Anonymous Coward on Saturday July 21 2018, @10:08AM (1 child)
Is that why you passed a law so that cheese only comes in 1kg blocks?
(Score: 2) by DannyB on Monday July 23 2018, @01:34PM
Wait, you're saying that in America, cheese now comes in blocks instead of spray cans?
The lower I set my standards the more accomplishments I have.