Author Archives: ijreid

About ijreid

I am an amateur palaeontologist thats hobbies include studying extinct amniotes, specifically dinosaurs, birds, and mammals. Occasionally, I focus my time on detailed and accurate illustrations of dinosaurs, and I have completed drawings of Dysalotosaurus, Micropachycephalosaurus, Zhuchengtyrannus, Troodon, Eotyrannus, Europelta, and Achillobator. I do not believe in copyrights, and think that the world would be better if everything was open access.

Skeletal making

I really haven’t been able to think of a topic this year that I can disclose the contents of to others, so here I am writing up a short piece on a new skill I’ve acquired. Be warned, there are … Continue reading

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Tyrant reptile King? Which king?

Yes, my last post was a decently long time ago, so I thought I’d pick up the slack by writing about everyones “favourite” theropod, Tyrannosaurus rex. It is by far the most completely known of any dinosaur, with several famous and … Continue reading

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What ever happened to Loricosaurus?

More sauropods, but deviating slightly from what I was planning to post today. Working through all the titanosaurs known from South America, I came across an old taxon I learned a little about several years back. Loricosaurus is a genus of … Continue reading

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Every discrete anatomical feature you need to know (vertebrae)

I have been (still) working on the titanosaur phylogeny you have seen in my last few posts. This time, because inspiration struck, I have decided to go beyond the recent minimal-word, main picture posts of late, and instead I am … Continue reading

Posted in Anatomy, Sauropoda | Tagged | 9 Comments

Work on titanosaurs (aka phylogeny #2)

Now, from what I had in my last post I expanded the matrix coding for 50 taxa instead of 42, and the tree definitely changed. Unfortunately, I forgot to add the taxa names in the first portion so instead they … Continue reading

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Phylogeny of Titanosauria #1

I am currently working on coding any and all titanosaurs into the matrix of Gonzalez et al (2016), describing Notocolossus. Just as a preliminary test, I have added a few new taxa, including Argyrosaurus, Hypselosaurus, Quetecsaurus and Puertasaurus. The results is shown below, … Continue reading

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Is Troodon really Troodon?

Troodon formosus is one of the first dinosaurs from North America ever named. Leidy (1856) described it for a single tooth with denticles on both the anterior and posterior carina. As of now, Troodon material includes the holotype tooth, the foot and caudal … Continue reading

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