The new drawing
today is Ceratosaurus.
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Ceratosaurus was a more primitive Theropod that lived in the Jurassic Period. More derived Theropods like Allosaurus and Torvosaurus were possibly more competitive and drove Ceratosaurus to extinction.
Ceratosaurus had a crest horn above each eye and a nose horn as well. This type of horn arrangement was very rare in Theropods. Some Theropods had eye crests but three horns were not a common feature.
Ceratosaurus was smaller than Allosaurus. It was about 25 feet long, or between 7 and 8 meters long. It weighed around 1200 lbs. That is about 344 kg. In comparison, an adult Allosaur was around 30-40 feet long and weighed up to 2.5 tons or 5000 lbs. Now, T. rex lived at a different time, but in comparison, the largest T. rex was 42 feet long and weighed 20,000 lbs. That is about 13 meters long and 9,702 kg.
Ceratosaurs possibly was the top predator EARLIER in the Jurassic Period, but it just could not compete with the larger Theropods that evolved like Allosaurus and Torvosaurus.
NOTE: This new drawing is done with large scales, although in reality, evidence shows that dinosaur scales were probably smaller than that. Below are some older drawings of Ceratosaurus. These drawings all can be found, in printable form, by clicking on the button up top labeled "Paleontology." But if you want a little better quality drawing just save the above drawing to another program, like Microsoft Word, and then print it from there. The "Printable" files are saved in PDF and it just is not as good as the PNG files on this main blog site. If you DO click on the Paleontology button then scroll down to see the new drawing. The new drawing is at the bottom of the list.
Ceratosaurus
Ceratosaurus by a River
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