This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. It, and all of its files and contents -- unless otherwise noted -- are protected by this license.
License established 9/9/2012, while previously I was using a CC-BY-ND license instead.
Author Archives: Jaime A. Headden
There is much we still do not know about the ancient origins of birds and near-bird animals, dromaeosaurs and troodontids. As we find more specimens of archaeopterygid or scansoriopterygid-like animals, of Anchiornises and what not, the tree becomes more of … Continue reading
As I wrote waaaay back in February of 2012 (damn!), my previous versions of the skeleton of the oviraptorid known as Citipati sp., or GIN 100/42 (or, simply “100/42″) were improperly scaled, improperly drawn, etc. Lots of errors, little means … Continue reading
Back in the 1980s and 1990s, a revolution in the way dinosaurs were conceived to have evolved occurred, in which a basal stock of croc-ish animals (this was during the “thecodont origin of … everything (?)” phase of archosaur relationship … Continue reading
The new small theropod Yi qi was described 29 April, 2015, far too late to be a practical joke for All Fools’ Day (by 4 weeks, precisely). Why would it be? The animal, described by Xu Xing and a number … Continue reading
The various and many ways to make a “cheek,” and the various facial tissues for which we have primary (preserved remains) and secondary (inferred) evidence for, in fossil sauropsidans. (These images are CC-BY-ND-NC. Please don’t take them without permission.)