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Getting A Leg Up On Whale And Dolphin Evolution: New Comprehensive Analysis Sheds Light On The Origin Of Cetaceans


Science & Tech  (tags: Cetaceans, whales, dolphins, discovery, research, science )

Dee
- 2980 days ago - sciencedaily.com
When the ancestors of living cetaceans--whales, dolphins and porpoises--first dipped their toes into water, a series of evolutionary changes were sparked that ultimately nestled these swimming mammals into the larger hoofed animal group.



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Comments

Dee C (23)
Friday September 25, 2009, 1:11 pm
"But what happened first, a change from a plant-based diet to a carnivorous diet, or the loss of their ability to walk?

A new paper published this week in PLoS ONE resolves this debate using a massive data set of the morphology, behavior, and genetics of living and fossil relatives. Cetacean ancestors probably moved into water before changing their diet (and their teeth) to include carnivory; Indohyus, a 48-million year-old semi-aquatic herbivore, and hippos fall closest to cetaceans when the evolutionary relationships of the larger group are reconstructed."

Read more at site..
 

Rhonda Maness (580)
Friday September 25, 2009, 5:52 pm
Thanks Dee
 

Judy C (97)
Friday September 25, 2009, 9:58 pm
This is interesting, and really raises a lot of questions.
 

Kathleen H (304)
Sunday September 27, 2009, 9:54 am
Interesting! Thanks Dee.
 
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