Skip to main content

more on Styracosaurus

Further to my previous post, I've added on some background to my Styracosaurus sketch.

I drew in lots of generic plantlife. I've previously done some research into the Hell Creek flora as a consultant job for Be the Dinosaur. As it turned out, the Hell Creek flora was dominated by angiosperms (about 90%). A lot of that was lobe-leafed plants, and lots of modern families, including the Arecaceae (palm), Zingiberaceae (ginger family), Nelumbonaceae (family including lotus), Rosaceae (rose family), Fagaceae (beech), Urticaceae (nettle family), and Cannabaceae (the family including hops and canabis!). So I drew some random lobe-leaf plants and somethings that look like roses and marijuana...

Of couse, Styracosaurus ain't from the Hell Creek Formation, but who cares.

Comments

Zachary Miller said…
Ah, context for the animal. It is my biggest weakness. Trees? What are those? Doesn't this totallly stark, white background do it justice?

Nicely done, sir.
Paleo King said…
I've seen this drawing a lot of times but i just had to get a closer look at it. LOL imagine a cannabis-eating Styracosaurus! Wonder if there were actually plants back then that could get a multi-ton dinosaur stoned...

I like the conifers and especially the fallen log in the water. I never thought about that before... dead trees and logs add to the realism but they often get ignored because the dinosaurs are the main subject... I'm gonna have to stick some rivers/lakes and dead logs in my future dino-drawings.

Popular posts from this blog

The difference between Lion and Tiger skulls

A quick divergence from my usual dinosaurs, and I shall talk about big cats today. This is because to my greatest delight, I had discovered today a wonderful book. It is called The Felidæ of Rancho La Brea (Merriam and Stock 1932, Carnegie Institution of Washington publication, no. 422). As the title suggests it goes into details of felids from the Rancho La Brea, in particular Smilodon californicus (probably synonymous with S. fatalis ), but also the American Cave Lion, Panthera atrox . The book is full of detailed descriptions, numerous measurements and beautiful figures. However, what really got me excited was, in their description and comparative anatomy of P. atrox , Merriam and Stock (1932) provide identification criteria for the Lion and Tiger, a translation of the one devised by the French palaeontologist Marcelin Boule in 1906. I have forever been looking for a set of rules for identifying lions and tigers and ultimately had to come up with a set of my own with a lot of help

R for beginners and intermediate users 3: plotting with colours

For my third post on my R tutorials for beginners and intermediate users, I shall finally touch on the subject matter that prompted me to start these tutorials - plotting with group structures in colour. If you are familiar with R, then you may have noticed that assigning group structure is not all that straightforward. You can have a dataset that may have a column specifically for group structure such as this: B0 B1 B2 Family Acrocanthosaurus 0.308 -0.00329 3.28E-05 Allosauroidea Allosaurus 0.302 -0.00285 2.04E-05 Allosauroidea Archaeopteryx 0.142 -0.000871 2.98E-06 Aves Bambiraptor 0.182 -0.00161 1.10E-05 Dromaeosauridae Baryonychid 0.189 -0.00238 2.20E-05 Basal_Tetanurae Carcharodontosaurus 0.369 -0.00502 5.82E-05 Allosauroidea Carnotaurus 0.312 -0.00324 2.94E-05 Neoceratosauria Ceratosaurus 0.377 -0.00522 6.07E-05 Neoceratosauria Citipati 0.278 -0.00119 5.08E-06 Ovir

Hind limb proportions do not support the validity of Nanotyrannus

While it was not the main focus of their paper, Persons and Currie (2016) , in a recent paper in Scientific Reports hinted at the possibility of Nanotyrannus lancensis being a valid taxon distinct from Tyrannosaurus rex , using deviations from a regression model of lower leg length on femur length. Similar to encephalisation quotients , Persons and Currie devised a score (cursorial-limb-proportion; CLP) based on the difference between the observed lower leg length and the predicted lower leg length (from a regression model) expressed as a percentage of the observed value. The idea behind this is pretty simple in that if the observed lower leg length value is higher than that predicted for its size (femur length), then that taxon gets a high CLP score. I don't particularly like this sort of data characterisation (a straightforward regression [albeit with phylogeny, e.g. pGLS] would do the job well), but nonetheless, Persons and Currie found that when applied to Nanotyrannus , it