The Tyrannosaurus Rex - The first dinosaur featured in this blog

Everyone knows about Tyrannosaurus Rex (or its short form T-rex which I will be using throughout this post), but most people have false impressions on it. Well, now I'm here to put those impressions to rest, and tell you much more about it.

• The T-rex is reputed to have very short hands, but they are more than 3ft long and very strong. If you look at the picture below (of a dinosaur named Carnotaurus), you won't think T-rex's arms are short anymore.
  
• T-rex wasn't the biggest carnivorous dinosaur. It wasn't even the second. There are two dinosaurs, Spinosaurus(you might know this one from Jurassic Park 3) and Giganotosaurus which are bigger than it. 
• This is not related to topic, but recent studies show that the T-rex would win in a fight against the Spinosaurus (if they lived in the same time and place) as the T-rex's teeth and body were more developed than Spinosaurus. (more on that later)
• The female T-rexs were bigger than males, which doesn't make much sense as the male has to hunt. However, the female had to lay eggs, so it needed bigger hips.
• The T-rex was not originally known as T-rex. In 1892, when it was found, it was called Manospondylus gigax or Giant Thin Vertebrae. Later, the president of the American Museum of Natural History, Henry Fairfield Osborn, named it Tyrannosaurus Rex.

Intro to Dinosaurs

As you might have guessed by now, I am starting to blog about Dinosaurs, a subject I know a lot about.
I will do my best to make this topic very interesting and fun to read.

Below will be my guide for the terminology used in my blogs henceforth :-

The two basic divisions of Dinosaurs:-
The two basic divisions are based on the dinosaur's hip joint structure.

source

Saurischia (saw-RIS-kee-a):-

Saurischia is derived from two Greek words:- (Sauros, meaning lizard and ischion meaning hip joint).

As you have just seen, Saurischian means lizard hip. It contains two basic species, Therapods and Sauropods(sauropodomorphs).

• Therapods are carnivourous dinosaurs, such as Tyrannosaurus rex and Spinosaurus.
• Sauropods are dinosaurs with long necks, such as Brachiosaurus and Diplodocus.

Ornithischia (or-ni-thiss-kee-a):-

Ornithischia is also derived from two Greek words:- (ornitheos, meaning of a bird and ischion, meaning hip joint). The confusing part is that birds are actually members of Saurischia. It contains three basic species, Thyreophera, Pachycephalosauridae, and Hadrosauridae.

• Thyreophera includes armoured dinosaurs like Stegosaurus and Ankylosaurus.
• Pachycephalosauridae includes domeheaded dinosaurs like Pachycephalosaurus and Stygimoloch.
• Hadrosauridae includes duckbilled dinosaurs like Parasaurolophus and Edmontosaurus.

*There are many subfamilies to the species mentioned above and many subfamilies to those too.