This site presents the idea that birds developed from pterosaurs.
This is a credible alternative to the current, mainstream idea that birds developed from land-based dinosaurs.
Sunday, June 20, 2010
* The Dino to Bird Cladogram
Here is the standard dino-to-bird diagram.
Notice the distinct difference between the maniraptors (on the right) and the dinosaurs (on the left). The maniraptors are primitive birds and do not belong with the dinosaurs.