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Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Thu May 12, 2016 8:34 pm
by bobbo_the_Pragmatist
43!

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Wed Feb 01, 2017 2:32 pm
by Kevin Levites
Isaac Asimov suggested an interesting idea about the duckbill platypus and it's mix of mammalian and reptilian features.

He seemed to suggest that the platypus not be considered a reptile or a mammal, but a kind of living fossil...the last surviving member of a group of animals called therapsids.

Evidentally, the trigeminal nerve in mammals exits the skull through a hole in a cranial bone, while the trigeminal nerve exits the skull through a hole that occurs in a boney suture (where two bone plates come together) in the extinct therapsids, and also in modern reptiles.

If we include this detail, then the platypus seems to have more reptillian features than mammalian ones.

Perhaps we classify it as a mammal for reasons having more to do with 'hair chauvanism' than anatomical reality.

Asimov's idea of classifying it as a surviving therapsid seems to be a middle-of-the-road compromise position, and I think it's a good one.

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Wed Feb 01, 2017 2:47 pm
by Poodle
... not to mention the small matter of its egg-laying habits.

For this reason alone, I'm going for flightless bird.

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Wed Feb 01, 2017 3:01 pm
by Kevin Levites
Thank you for answering my post, but the eggs are very similar to reptillian eggs, not bird eggs.

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Wed Feb 01, 2017 5:15 pm
by Poodle
Yes, Kevin. It was humour.

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Wed Feb 01, 2017 6:43 pm
by ElectricMonk
It's a weird critter - venomous, too.
That is very unusual in that part of the tree of Life.

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Wed Feb 01, 2017 7:16 pm
by Poodle
Platypus, Echidna, Kangaroo, Koala, Wombat, Quoll. They're all weird and all have something in common.

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Wed Feb 01, 2017 8:00 pm
by Nobrot
Poodle wrote:Platypus, Echidna, Kangaroo, Koala, Wombat, Quoll. They're all weird and all have something in common.

They can't fly?

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Wed Feb 01, 2017 9:14 pm
by Poodle
Wombats can - but only at night.

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Thu Feb 02, 2017 3:49 am
by Gord
Poodle wrote:Wombats can - but only at night.

And only on the other side of the Earth, which makes sense, 'cause up is down there and down is up.

Image

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Thu Feb 02, 2017 4:12 am
by Matthew Ellard
Poodle wrote:Wombats can - but only at night.
We actually do have some flying marsupials. The sugar glider. It is, indeed, nocturnal and a pretty little thing.
sugar-glider 2.jpg
sugar glider.jpg

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Thu Feb 02, 2017 4:15 am
by Gord
Technically, gliders aren't flyers.

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Thu Feb 02, 2017 4:23 am
by Matthew Ellard
Gord wrote:Technically, gliders aren't flyers.

Oh Yeah? Explain this!!!!!!!
rocky.jpg

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Thu Feb 02, 2017 4:45 am
by Major Malfunction
If you put a leather jacket on a kite, it doesn't fly. Therefore God.

I also like the aerodynamic ballsack in that possum illustration. It's a nice detail.

http://www.youtube.com/watch?v=6IG2mJuB2Yk

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Thu Feb 02, 2017 8:54 am
by Gord
Major Malfunction wrote:If you put a leather jacket on a kite, it doesn't fly. Therefore God.

I also like the aerodynamic ballsack in that possum illustration. It's a nice detail.

http://www.youtube.com/watch?v=6IG2mJuB2Yk

https://uncertaintist.wordpress.com/201 ... is-a-hoax/

Christians against Dinosaurs is a hoax

They have a website: http://www.christiansagainstdinosaurs.com/

Two of the twitters feeds I followed from there are named "BigAlexJones" and "Alexander JonesĀ®". :heh:

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Thu Feb 02, 2017 9:26 pm
by Abdul Alhazred
Never mind that.

How the heck did the platypuses get back to Australia from Mount Ararat? :pr:

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Thu Feb 02, 2017 9:48 pm
by scrmbldggs
The moon helped. But you can't explain that...

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Fri Feb 03, 2017 6:44 am
by Gord
Tide goes in, tide goes out.

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Fri Feb 03, 2017 7:03 am
by Poodle
Abdul Alhazred wrote:Never mind that.

How the heck did the platypuses get back to Australia from Mount Ararat? :pr:


Platypodes. :neener:

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Fri Feb 03, 2017 7:20 am
by scrmbldggs
Poodle wrote:
Abdul Alhazred wrote:Never mind that.

How the heck did the platypuses get back to Australia from Mount Ararat? :pr:


Platypodes. :neener:

Platytoots. :nyaah:

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Fri Feb 03, 2017 9:04 am
by ElectricMonk
It's from Australia - it used a surfboard
- duh.

Re: Genome Analysis Of The Duck-Billed Platypus

Posted: Fri Feb 03, 2017 9:40 am
by Abdul Alhazred
ElectricMonk wrote:It's from Australia - it used a surfboard
- duh.


:mrgreen: