Pterosaurs to Birds

This site presents the idea that birds developed from flying pterosaurs. This is a credible alternative to the current, mainstream idea that birds developed from land-based dinosaurs.

Monday, July 21, 2014

Consensus

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https://www.cfa.harvard.edu/~scranmer/SPD/crichton.html "I want to pause here and talk about this notion of consensus , and the rise ...

Thursday, May 15, 2014

Characters

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Here is an accumulation of information related to characters analyzed in Nesbitt (2011) and Nesbitt et al (2009). These support the pteros...

Monday, April 28, 2014

Pneumatic (air-filled) postcranial bones

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We see that the postcranial bones of pterosaurs, secondarily flightless maniraptors and birds are pneumatic. Coelurosaur dinosaurs did not ...

Tuesday, March 25, 2014

Body size and forelimb length

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Bird-like characteristics are found in basal Paraves. They are not found in dinosaurs. That is because basal paraves are not descended fro...

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Monday, March 17, 2014

Harry Govier Seeley - Pterosaurs to Birds

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The idea that birds are descended from pterosaurs has an interesting history. The idea was proposed by Harry Govier Seeley . But note the ...

Saturday, March 15, 2014

Hyposphene-hypantrum articulations

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Dinosaurs had hyposphene-hypantrum articulations. Basal Paraves did not. DINOSAURS http://en.wikipedia.org/wiki/Hyposphene The hyp...

Sunday, March 9, 2014

Caudal Rods (2)

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http://onlinelibrary.wiley.com/doi/10.1111/1755-6724.12009/abstract In the tails of dromaeosaurid dinosaurs and rhamphorhynchid ptero...

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