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...
Friday, February 7, 2014

Caudal Rods (1)

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Let's turn to the topic of "caudal rods" in the long-tailed pterosaurs and the dromaeosaurs: http://onlinelibrary.wiley.com/...
Thursday, February 6, 2014

An Elaboration

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Here is an elaboration of the basic ideas listed in the right sidebar: The current mainstream thinking is that birds developed from coelur...
Tuesday, February 4, 2014

Introduction to Pterosaurs

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Here is a good introduction to the basics of pterosaurs. Note the similarities to birds. It mentions many interesting aspects, includi...
Monday, January 27, 2014

Pycnofibres to Feathers

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The evidence indicates that pterosaur pycnofibres were Stage II feathers. Background - How a Feather Develops http://people.eku.edu/ritc...