Sunday, August 9, 2015

Primitive Birds

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Here is a partial list of primitive (feathered, long-bony-tailed) flying and secondarily flightless birds. Scansoriopterygids (Temporal ra...
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Monday, July 20, 2015

Basalmost Paraves

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There is a set of 4-winged, flying, primitive birds (eg. Anchiornis, Aurornis, Xiaotingia etc.) that at times have been classified as aviala...
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Zhenyuanlong

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Zhenyuanlong  is a  secondarily flightless   member of Paraves. http://www.nature.com/srep/2015/150716/srep11775/full/srep11775.html  (201...
Sunday, July 5, 2015

Primitive birds flying

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Primitive birds (basalmost paraves) flapped their wings and flew using the same set of muscles as their pterosaur ancestors. http://p...
Thursday, July 2, 2015

Fingers - Quick Summary

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  https://en.wikipedia.org/wiki/Origin_of_birds#Digit_homology There is a debate between embryologists and paleontologists whether the h...
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Wednesday, July 1, 2015

Bristles and feathers - Quick summary

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Dinosaurs (eg. tyrannosaurs) had bristles. They did not have any form of feather. On the other hand, pterosaurs had Stage I and Stage II fe...
Friday, June 26, 2015

Primitive birds - Quick summary

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There were pennaceous-feathered, long-bony-tailed primitive birds. The most basal were flying (eg. scansoriopterygids, tetrapterygids ). ...
Monday, June 22, 2015

Oviraptor Propatagium

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More evidence that oviraptors were secondarily flightless and not transitional between dinosaurs and Paraves. https://www.google.ca/url?s...
Friday, June 5, 2015

Dinosaurs are not similar to primitive birds

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The following study shows that there were 51 synapomorphies  (unique defining characteristics) for Paraves (primitive birds). This means tha...
Saturday, May 2, 2015

Yi qi

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Yi qi study: https://www.researchgate.net/publication/275669107_A_bizarre_Jurassic_maniraptoran_theropod_with_preserved_evidence_of_membran...
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Friday, January 9, 2015

Dino to bird - off on the wrong foot

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The revival of the dino to bird idea began with the work of John Ostrom in the 1970's. But Ostrom misinterpreted the flightless Deino...
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