Jump to content


Photo

Fossil "camel" From Panama Canal


7 replies to this topic

#1 Auspex

Auspex

    Member of the Month 08/08

  • Administrator
  • PipPipPip
  • 33,739 posts
  • Gender:Male
  • Location:Alexandria, VA

Awards

 

Posted 14 March 2012 - 06:43 PM

LINK

"There has been an alarming increase in the number of things I know nothing about."
-Ashleigh Ellwood Brilliant


#2 Bullsnake

Bullsnake

    Perpetual Noob

  • Regular Members
  • PipPipPip
  • 2,484 posts
  • Gender:Male
  • Location:Lansing, Kansas

Awards

 

Posted 14 March 2012 - 09:35 PM

Really interesting stuff! That's quite a gap between this discovery and what was previously thought.
With it having such unique characteristics, namely the teeth, I would think it more likely to be a branch that never completed migration south, rather than an ancestor, which came later.
Just a thought.
STEVE
Famous last words..."Hey guys, watch this"!
"All my life, I always wanted to be somebody. Now I see that I should have been more specific"-Lily Tomlin

#3 Auspex

Auspex

    Member of the Month 08/08

  • Administrator
  • PipPipPip
  • 33,739 posts
  • Gender:Male
  • Location:Alexandria, VA

Awards

 

Posted 15 March 2012 - 07:09 AM

The fossil is Miocene (20 MYO); when did the land bridge between the continents form? Maybe I'm showing my ignorance, but was the Isthmus terra firma then, or is this a case of bloat-and-float?

"There has been an alarming increase in the number of things I know nothing about."
-Ashleigh Ellwood Brilliant


#4 Bullsnake

Bullsnake

    Perpetual Noob

  • Regular Members
  • PipPipPip
  • 2,484 posts
  • Gender:Male
  • Location:Lansing, Kansas

Awards

 

Posted 15 March 2012 - 03:19 PM

To clarify my post, I'm suggesting that it was a species that evolved to adapt to that environment, failed, and for whatever reason no mammals traversed the isthmus for another 17million years; that being the gap I was referring to.
Bloat and float seems plausible, though. But maybe it was like Kansas...it's water,it's land,it's water,it's land...
And don't think you can out-ignorance me, Mr. Auspex :P
:wacko:
STEVE
Famous last words..."Hey guys, watch this"!
"All my life, I always wanted to be somebody. Now I see that I should have been more specific"-Lily Tomlin

#5 siteseer

siteseer

    Member of the Month July 2010

  • Regular Members
  • PipPipPip
  • 3,193 posts
  • Gender:Male

Awards

 

Posted 16 March 2012 - 10:51 PM

Two genera of ground sloth arrived in North America about 9 million years ago and one genus of peccary appeared in South America about the same time. Sloths are surprisingly good swimmers even today and peccaries are a hardy lot in any case. The isthmus formed slowly and may have existed as a series of small islands during the Miocene and much of the Pliocene. Individual animals of many groups may have "island-hopped" as storm survivors rafting on floating vegetation though few arrived in sufficient number to maintain viable populations. Connecting the dots might have been easier during intervals of lower sea level as well, as you suggested.

The land bridge was not completed until about 2.7 million years ago, a time marked by the appearance of various North American land mammals in South America and a lesser invasion from the south to the north.

I should add that the isthmus formation has been previously explained as a piece of southern Mexico breaking off sometime in the Late Cretaceous-Cenozoic, then sliding into its current position.

Yes, I think that camel species (a descendant of castaways) might have survived on a "Panama island" by the skin of its teeth long enough to adapt by decreasing in size and broadening its diet (explaining the odd teeth).



To clarify my post, I'm suggesting that it was a species that evolved to adapt to that environment, failed, and for whatever reason no mammals traversed the isthmus for another 17million years; that being the gap I was referring to.

Bloat and float seems plausible, though. But maybe it was like Kansas...it's water,it's land,it's water,it's land...
And don't think you can out-ignorance me, Mr. Auspex :P
:wacko:



#6 Auspex

Auspex

    Member of the Month 08/08

  • Administrator
  • PipPipPip
  • 33,739 posts
  • Gender:Male
  • Location:Alexandria, VA

Awards

 

Posted 18 March 2012 - 10:43 AM

>MORE<
Wherein we learn that the site was the southernmost land in Central America at the time; no bridge needed.

"There has been an alarming increase in the number of things I know nothing about."
-Ashleigh Ellwood Brilliant


#7 AgrilusHunter

AgrilusHunter

    MOTM 02/13

  • Regular Members
  • PipPipPip
  • 1,564 posts
  • Gender:Male
  • Location:Purdue University

Awards

 

Posted 18 March 2012 - 01:41 PM

>MORE<
Wherein we learn that the site was the southernmost land in Central America at the time; no bridge needed.


"crocodile-like camels"

Now there's an odd image. Any one else think this would make a great Farside cartoon.
"They ... savoured the strange warm glow of being much more ignorant than ordinary people, who were only ignorant of ordinary things."
-- Terry Pratchett

#8 pleecan

pleecan

    Member of the Month 08/10

  • Regular Members
  • PipPipPip
  • 5,218 posts
  • Gender:Male
  • Location:Ontario Canada

Awards

 

Posted 19 March 2012 - 02:46 PM

NEAT ARTICLE! I like the part of camel being the size of a dog....



Reply to this topic



  


0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users