Changes

*Sauropoda

*Sauropoda

::Species of this infraorder are characterized by long necks and tails, barrel-shaped bodies, and column-like legs.  In three families (notably Diplodocidae, Brachiosauridae, and Titanosauroidea) there are species which are of extreme size, in excess of 125 feet in length and 100 tons, making them the largest animals to have walked the earth.

::Species of this infraorder are characterized by long necks and tails, barrel-shaped bodies, and column-like legs.  In three families (notably Diplodocidae, Brachiosauridae, and Titanosauroidea) there are species which are of extreme size, in excess of 125 feet in length and 100 tons, making them the largest animals to have walked the earth.

:::''Apatosaurus''  

:::''[[Apatosaurus]]''  

:::''Brachiosaurus''  

:::''[[Brachiosaurus]]''  

:::''Ultrasaurus''  

:::''[[Ultrasaurus]]''  

:::''Seismosaurus''  

:::''[[Seismosaurus]]''  

:::''Argentinosaurus''  

:::''[[Argentinosaurus]]''  

:::''Diplodocus''  

:::''[[Diplodocus]]''  

*Theropoda

*Theropoda

::Exclusively bipedal; forearms meant for grasping or holding.  Fossil evidence for several species indicate pack hunting.  

::Exclusively bipedal; forearms meant for grasping or holding.  Fossil evidence for several species indicate pack hunting.  

:::''Coelophysis''  

:::''[[Coelophysis]]''  

:::''Ornithomimus''  

:::''[[Ornithomimus]]''  

:::''Allosaurus''  

:::''[[Allosaurus]]''  

:::''Tyrannosaurus''  

:::''[[Tyrannosaurus]]''  

:::''Deinonychus''  

:::''[[Deinonychus]]''  

:::''Velociraptor''  

:::''[[Velociraptor]]''  

:::''Giganotosaurus''  

:::''[[Giganotosaurus]]''

===''Ornithischia''===

===''Ornithischia''===