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Author Topic:   Archaeopteryx and Dino-Bird Evolution
obvious Child
Member (Idle past 4224 days)
Posts: 661
Joined: 08-17-2006


Message 132 of 200 (347469)
09-08-2006 1:01 AM


How many birds have:
Premaxilla and maxilla are not horn-covered.
Trunk region vertebra are free.
Bones are pneumatic.
Pubic shafts with a plate-like, and slightly angled transverse cross-section
Cerebral hemispheres elongate, slender and cerebellum is situated behind the mid-brain and doesn't overlap it from behind or press down on it.
Neck attaches to skull from the rear as in dinosaurs not from below as in modern birds.
How many reptiles have:
Feathers
Opposable hallux (big toe).
Furcula (wishbone) formed of two clavicles fused together in the midline.
Pubis elongate and directed backward
Answer: None
All About Archaeopteryx

Replies to this message:
 Message 135 by arachnophilia, posted 09-08-2006 2:37 AM obvious Child has replied
 Message 147 by Someone who cares, posted 09-08-2006 9:09 PM obvious Child has not replied

  
obvious Child
Member (Idle past 4224 days)
Posts: 661
Joined: 08-17-2006


Message 139 of 200 (347499)
09-08-2006 4:00 AM
Reply to: Message 135 by arachnophilia
09-08-2006 2:37 AM


but the real question is how many have all of such features excluding the toe?
a specimen that has many traits of both birds and dinosaurs would suggest that it is transitional.
Btw, that wasn't my question. I asked how many have all. Given that your list doesn't include all of the features, my statement of none is correct.

This message is a reply to:
 Message 135 by arachnophilia, posted 09-08-2006 2:37 AM arachnophilia has replied

Replies to this message:
 Message 146 by arachnophilia, posted 09-08-2006 8:35 PM obvious Child has not replied

  
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