Monday, November 2, 2015

Unjustifiable assumptions of homology

›
http://www.bio.fsu.edu/James/Ornithological%20Monographs%202009.pdf Unjustifiable assumptions of homology incorporated into data matric...
23 comments:
Tuesday, October 13, 2015

From pterosaur to primitive bird

›
Here is a draft of the lineage from pterosaur to primitive bird (click to enlarge): This shows the transition from pterosaur to fl...
1 comment:
Monday, October 12, 2015

Jeholornis and Oviraptors

›
I suggest that secondarily flightless oviraptors descended (in both senses) from a flying creature like Jeholornis. Notice the similarities ...
Sunday, October 11, 2015

Outgroups

›
There are many problems with the analyses of the dino to bird theory. Here is one of them: http://www.bio.fsu.edu/James/Ornithological%20M...
3 comments:
Sunday, October 4, 2015

Ancestor

›
The ancestor of primitive birds was a  rhamphorhynchoid pterosaur much like Jeholopterus or Pterorhynchus. The earliest primitive birds we...
15 comments:
Sunday, August 9, 2015

Primitive Birds

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

Basalmost Paraves

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

Zhenyuanlong

›
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

›
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

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

Bristles and feathers - Quick summary

›
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

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

Oviraptor Propatagium

›
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

›
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

›
Yi qi study: https://www.researchgate.net/publication/275669107_A_bizarre_Jurassic_maniraptoran_theropod_with_preserved_evidence_of_membran...
5 comments: