scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 579
A vast majority of the world has heard of dinosaurs Most would tell you that they were scary creatures that went around terrorizing the rest of the globe How did they become so fierce and well known Chiefly how did dinosaurs become the rule of the world There are two prevailing hypotheses the court jester hypothesis and the red queen hypothesisThe court jester hypothesis bases that dinosaur evolution was shaped by biotic factors where as the red queen hypothesis states dinosaur evolution was because of biotic factors The court jester hypothesis is correct because the expansion of dinosauria in two steps climate and plate tectonics are abiotic factors that drastically effected dinosaur evolutionThe court jester hypothesis says that environmental changes shaped dinosaur evolution which allowed them to take advantage of extinctions in other groups and grow themselvesDinosaurs expanded in two separate steps both after extinctions The first one came in 225 Ma after the extinction of dominant herbivores took place allowing herbivorous dinosaurs to rise The second came for carnivorous dinosaurs where the extinctions of other carnivores occurred in 200 Ma and the second expansions of dinosaurs occurred Benton Plate tectonics are another abiotic factor that shaped dinosaur evolution On the other hand the red queen hypothesis is behind that competition with other organisms shaped evolution-meaning dinosaurs out competed other organisms In other words biotic factors influenced the evolution of dinosaurs The major argument for this is bipedalism Bipedalism is a form of locomotion that allows land organisms walk and move about on their two back limbs The earliest forms of known dinosaurs were bipedal They could accomplish this with the right adaptations To be able to walk on two legs the plane of the legs must be parallel to the vertical plane of the torso and the head of the thighbone ninety degrees to the shaft The head of the femur is barrel-shaped restricting motion to forward and backward movement As well the metatarsal
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA