twitter facebook stumble upon rss

400-Million-Year-Old Penis Found

sign up for the momlogic newsletter Tweet This
Discovery News: Scientists have confirmed the oldest penis-like structure in an ancient fish specimen.

400 million year old penis
The discovery of the 400 million-year-old reproductive organ is one of the earliest examples of internal fertilization in vertebrate animals.

Understanding the anatomy of these ancient fish could reveal further details in the evolution of vertebrates -- including humans.

The research is published in today's advanced online ahead of print edition of Nature.

Earlier this year the team, led by Australian palaeontologist Dr John Long, predicted some ancient fish from the Devonian era, had an attachment to their pelvic bone, which were used by males to fertilize females.

Long, of Museum Victoria, said "when we announced we'd found some structures in the pelvic fin that suggested copulation, we hadn't found the business end of how they were doing it."

Now the team have identified a long clasper, made entirely of bone, on another fish specimen. Long said claspers were used by the ancient fish, an extinct class of armored fish called placoderms, to grip inside the female while they were mating.

"It's a pretty big find because placaderms were the dominant fish for 70 million years, but we knew nothing about their reproduction," said Long.

He said their work earlier this year suggests the reproductive structure in the dominant group of placoderms, called arthrodires, was similar to present-day sharks.

"Now we've actually found it, a specimen with an undoubted clasper with a knobbly end."

Study author and palaeontologist Kate Trinajstic, of Curtin University in Perth, said the clasper was discovered in a fish specimen uncovered in the Gogo region of Western Australia in 2001. The team originally discounted the bone as the reproductive organ because they thought it was part of the pelvic girdle.

On closer inspection, Trinajstic said they realized it was a sexual organ.

"We were surprised because it's so big," she said. "We were expecting something smaller."

Trinajstic said the clasper, which was attached to the pelvic organ would have been erectile.

"It penetrates the female, and acts like a funnel, allowing the transfer of sperm."

She said the ancient fish had quite advanced reproductive systems considering sharks today have a similar system.

Trinajstic said the discovery of the clasper now allows scientists to identify the sex of other specimens of ancient fish.

"That sounds like a basic thing, but we haven't been able to do that before."

Read more hot stories Moms Are Talking About.


next: Bottle-Feeding Moms Ignored by Medical Staff
23 comments so far | Post a comment now
TripleS July 16, 2009, 12:33 AM

Its gonna be Hot!!!

Duncan July 16, 2009, 5:07 AM

WOW ! HOLY SMOKEeeeee….

rugbymom August 13, 2009, 3:37 PM

Ew…Ouch. Ew.

diazepam December 1, 2010, 3:39 PM

Hi, I recently came to your blog and started reading along your articles. I thought I would leave my first comment. I dont know what to say except that I have enjoyed reading your blog. It is a realls nice blog. I will keep visiting this blog very often…

korekcja zmarszczek białystok  January 13, 2011, 10:04 AM

That is a brilliant idea!

light sheer białystok  January 14, 2011, 2:31 AM

Thanks for the beautiful article, guys. You are awesome!

pozycjonowanie stron February 8, 2011, 11:16 AM

It is really amazing, what you have written. Congratulations.

Daren Giff February 11, 2011, 4:35 AM

As a Newbie, I am continuously searching online for articles that can help me. Thank you

Prestiti Personali February 20, 2011, 4:19 AM

I would like to use the chance of thanking you for your professional instruction I have often enjoyed browsing your site. We are looking forward to the actual commencement of my school research and the complete planning would never have been complete without coming to your site. If I may be of any assistance to others, I will be glad to help through what I have discovered from here.

Przeprowadzki Warszawa February 28, 2011, 5:02 AM

You are my favourite website, I read your articles everyday.

three peaks challenge March 6, 2011, 4:02 PM

A really good set of info which I will be certainly coming back to read again. Thanks very much to all those who contribute.

kasa w internecie March 14, 2011, 7:05 AM

I wanna read more your articles!

George A. Harrell March 29, 2011, 4:24 PM

Very helpful

Elmer Rosendorf March 29, 2011, 5:05 PM

There is perceptibly a bunch to know about this. I consider you made certain nice points in features also.

Devon Poolheco March 30, 2011, 6:18 AM

Very good written article. It will be beneficial to anybody who utilizes it, including myself. Keep up the good work - for sure i will check out more posts.

Lois U. Burton March 31, 2011, 4:22 AM

Many thanks

Leon Jaeschke April 6, 2011, 8:53 AM

As a Newbie, I am always searching online for articles that can help me. Thank you

Pedro Kindler April 8, 2011, 1:43 AM

Some awesome points that you have made on this topic. From my research it would appear that you’ve completed an excellent job on the write-up and that most of the specialists would agree with you.

ślady biologiczne April 9, 2011, 3:39 AM

It is truely good post, but I do not see everything completely clear, especially for someone not involved in that topic. Anyway very interesting to me.

bli av med akne April 9, 2011, 12:13 PM

Thankyou for all your efforts that you have put in this. very interesting information.


Leave a reply:



(not displayed)

     




Avoid clicking "Post" more than once
Back to top >>
advertisement