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Author Topic:   Earlier Whale ancestor found
Dr Jack
Member
Posts: 3514
From: Immigrant in the land of Deutsch
Joined: 07-14-2003
Member Rating: 8.3


Message 1 of 5 (442131)
12-20-2007 9:57 AM


quote:
Whales originated from aquatic artiodactyls in the Eocene epoch of India
Here we show that the Eocene south Asian raoellid artiodactyls are the sister group to whales. The raoellid Indohyus is similar to whales, and unlike other artiodactyls, in the structure of its ears and premolars, in the density of its limb bones and in the stable-oxygen-isotope composition of its teeth. We also show that a major dietary change occurred during the transition from artiodactyls to whales and that raoellids were aquatic waders. This indicates that aquatic life in this lineage occurred before the origin of the order Cetacea.
- Abstract from Nature
quote:
The whale is descended from a deer-like animal that lived 48 million years ago, according to fossil evidence.
Remains found in the Kashmir region of India suggest the fox-sized mammal is the long-sought land-based ancestor of whales, dolphins and porpoises.
Research in Nature suggests the animal lived mainly on land but dived into water to escape predators.
- BBC News Article

Replies to this message:
 Message 2 by jar, posted 12-20-2007 11:13 AM Dr Jack has not replied
 Message 3 by Chiroptera, posted 12-20-2007 2:43 PM Dr Jack has not replied

  
jar
Member (Idle past 423 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004


Message 2 of 5 (442164)
12-20-2007 11:13 AM
Reply to: Message 1 by Dr Jack
12-20-2007 9:57 AM


As spidey said...
Look, two more gaps in the fossil record created.

Immigration has been a problem Since 1607!

This message is a reply to:
 Message 1 by Dr Jack, posted 12-20-2007 9:57 AM Dr Jack has not replied

  
Chiroptera
Inactive Member


Message 3 of 5 (442194)
12-20-2007 2:43 PM
Reply to: Message 1 by Dr Jack
12-20-2007 9:57 AM


Suddenly, I miss randman.

It has become fashionable on the left and in Western Europe to compare the Bush administration to the Nazis. The comparison is not without some superficial merit. In both cases the government is run by a small gang of snickering, stupid thugs whose vision of paradise is full of explosions and beautifully designed prisons. -- Matt Taibbi

This message is a reply to:
 Message 1 by Dr Jack, posted 12-20-2007 9:57 AM Dr Jack has not replied

Replies to this message:
 Message 4 by macaroniandcheese, posted 12-20-2007 3:32 PM Chiroptera has not replied
 Message 5 by Taz, posted 12-20-2007 5:07 PM Chiroptera has not replied

  
macaroniandcheese 
Suspended Member (Idle past 3957 days)
Posts: 4258
Joined: 05-24-2004


Message 4 of 5 (442208)
12-20-2007 3:32 PM
Reply to: Message 3 by Chiroptera
12-20-2007 2:43 PM


don't say things like that. i'd quite forgotten.

This message is a reply to:
 Message 3 by Chiroptera, posted 12-20-2007 2:43 PM Chiroptera has not replied

  
Taz
Member (Idle past 3320 days)
Posts: 5069
From: Zerus
Joined: 07-18-2006


Message 5 of 5 (442264)
12-20-2007 5:07 PM
Reply to: Message 3 by Chiroptera
12-20-2007 2:43 PM


Shh, it's bad luck to say his name.

This message is a reply to:
 Message 3 by Chiroptera, posted 12-20-2007 2:43 PM Chiroptera has not replied

  
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