Spider jockey

                                                                 "Spider Jocky"

The spider jockey is a mob from minecraft.This creature is basically a skeleton riding a spider. When you kill one of them, the other one continues to attack you, making this combination very dangerous when encountered. They drop the same items as a  regular skeleton and spider. A spider has a 1% chance to spawn with a skeleton rider. This means that a spider spawner can very rarely spawn a spider jockey. Spiders spawned using Spawn Eggs in the Nether have a small chance(0.8% of the time) of a Wither Skeleton spawning on them. The spider controls the movement, so a Spider Jockey will wander aimlessly in the day and only pursue the player at night or in dimly lit areas when the spider is hunting. However, the skeleton will turn and fire at the player as soon as it sees them no matter the time of day When exposed to sunlight, the skeleton will burn and die like a normal skeleton, but the spider will remain active and deadly. Because a Spider Jockey can only spawn where an ordinary spider can, a spider-proofed area is also Spider Jockey-proof.

 

Spinosaurus

 

"Spinosaurus"

 

 

 

         

Spinosaurus (meaning "spine lizard") is a genus of the theropod dinosaur which lived in what is now North Africa and is from the Cretaceous period which is about 100 million years ago. This species was discovered in Egypt in 1912 and described by German paleontologist Ernst Stromer in 1915. The original remains were destroyed in World War II but additional bones have been found in recent years. It is unclear whether one or two species are represented in the fossils reported in the scientific literature. The best known species is S. aegyptiacus from Egypt, although a potential second species S. maroccanus has been recovered from Morocco.
Spinosaurus may be the largest of all known carnivorous dinosaurs, even larger than Tyrannosaurus and Giganotosaurus. Estimates published in 2005 and 2007 suggest that it was 41 to 59 ft in length and 7 to 20.9 tonnes in weight. The skull of Spinosaurus was long and narrow like that of a modern crocodilian. Spinosaurus is thought to have eaten fish; evidence suggests that it lived both on land and in water like a modern crocodilian. The distinctive spines of Spinosaurus, which were long extensions of the vertebrae, grew to at least 5.4 ft long and were likely to have had skin connecting them, forming a sail-like structure, although some authors have suggested that the spines were covered in fat and formed a hump. Multiple functions have been put forward for this structure, including thermoregulation and display. Very few Spinosaurus fossils have been found, and they are incomplete. 
                            
                                 WATCH THIS VIDEO

 

One of the original Photographs of the Bones making up part of the “Sail” of Spinosaurus

                             

          

                                    sources:      
1.http://en.wikipedia.org/wiki/Spinosaurus

2.http://www.enchantedlearning.com/subjects/dinosaurs/dinos/Spinosaurus.shtml
  3.http://blog.everythingdinosaur.co.uk/blog/_archives/2007/12/23/3426100.html