Category Archives: Phylogeny

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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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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My take on english taxa #1

So I’m beginning a new series on english taxa, starting with the oldest of any, Rutellum impicatum. Now this name currently is invalid, but it has a very important story to tell. A single tooth was collected near Whitney, Oxfordshire, … Continue reading

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Haestasaurus

Haestasaurus becklesii is a moderately sized macronarian from the Wealden of England. It was known as “Pelorosaurus” becklesii for a long time since its original description, with its humerus, the only overlapping material, significantly more robust than that of Pelorosaurus brevis. In … Continue reading

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Why Not to delete taxa A Posteriori or A Priori

So I’ve been making excursions into phylogenetic analysing, and based on advice from Mike Taylor I’ve added a dental character, Euhelopus and Brachiosaurus nougaredi. Based on what I’ve found, I can safely say that NO MATTER WHAT, all characters and taxa add … Continue reading

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A Phylogeny of Pure Sacral Characters

I have for a while been intrigued by sauropods, and how Atlantosaurus related to Apatosaurus. Of course because the former would be the senior synonym. But I didn’t want to code it into a large analysis. So I decided to place it … Continue reading

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