MATOS,+KEVIN+A

=Dinosaurs= By Matos Kevin period 1

=Table of contents=

=page1.......................introduction= =page2.......................what is a dinosaur= =page3...............................diet= =page4...............................locomotion= =page5...............................how are dinosaurs named= =page6...............................male or female= =page7...............................life span= =page8...............................reproduction,nest,and eggs= =page9...............................dinosaur extinction= =page10.............................fossils= =page11.............................bibliography=

=Introduction=

Many millions of years ago animals walked across the earth.These animals were called Dinosaurs. There were many types of dinosaurs on earth.Like the Tyranosaurus Rex,Brontosaurus,Triceretops and many others.Some were big some were small some enomous and some were small enough to walk on your hand.Here are many different things about Dinosaurs like their diet,locomotion,and reproduction.

=What is a Dinosaur= Dinosaurs were prehistoric reptiles that lived in the Mesozioc Era or Age of Reptiles. Large dinosaurs were like over 100 feet long and about 50 feet tall like the Argentinosaurus,Ultrasauros Brachiosaurus, and supersaurus.Small dinosaurs like the compsognathus were as tall as a chicken. Most were pretty much in the middle of that.Some were meat-eaters and some ate plants.Meat-eaters had large sharp teeth .Plant eaters had regular but strong teeth to chomp the tall leaves in there mouths.Some walked upright and other walked on there four legs.some were fast like the Velociraptor and some were very slow like the Ankylosaurus.they were all looked different in there own special way.

=Diet= A large number of plants called producers get eaten by primary consumers.The plant eaters get eaten by secondary consumers,the meat-eaters.Then some of the meat eaters get eaten by larger meat-eaten called tertiary consumers. More of the dinosaurs were plant eater. Only about 30 percent of the dinosaurs were meat eaters.Even though all the meat eaters were eatintg all the plant eaters there was a bigger percent of dinosaurs were plant eaters.

=Locomotion= Some dinosaurs walked on two legs and others walked on all four. Some of them ran on two but walked on four. A majority of them were slow but the others were very fast.Big dinosaurs with short legs were probolly the slowest of the dinosaurs.large dinosaurs,heavly plated low slugged dinosaurs were a little bit faster than the previous but still slow.the fastest were the bird like bipedal carnivores.

=How Dinosaurs are Named= Newly named dinosaurs are named by the discoverer or the paleontologist.there are many different ways to name a dinosaur.some are named after the place that they are found.others for there behavior or size.Or there named in Honor of the person.But it has to be approved by the International Commission of Zoological nomenclature.

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=Male or Female=

Some scientist thoght the males of some spiecies have a bigger crest in there fossils.Many paleontologist believe that the ceratopsians used there horns and frills in territorial disputses.Many of the males fot each other for the female for mating perpuses.Others tried to impress them by showing their strength or a certain dance.

=Life Span= Some scientist think that dinosaurs have growth rings that determined there age. The rings are only seen through a micrscope.Another way to estimate is to measure the size of there bodies.Huge dinosaurs are thought to be over 100 years old.Growth rates is to grow at the rate of a modern day reptile.

=Reproduction, Nest,and Eggs= Dinosaur eggs are laied the same way regular birds and reptiles are laid.After sexual reproduction the female lays its eggs.Then it protects its egg from predotors and scavengers so they will be born.After the eggs hatch the mother brings its first meal and fedds them. It keeps doing this until its babys grow up and and are able to live on there own,feed them selves, find a mait and reproduce there species and dies.The carnivores nest in close area by themselves.And herbavores nest usally with there herd.

=Dinosaur Extinction= there is still no good idea about extinction.a good idea about extinction is that a metiorite struck earth with great force.That metior is to have said that it wiped out everthing in its way.So the dinosaurs could have not survived the hit on earth.Aother idea is that during the dinosaur era there was agrea ice age that froze the dinosaurs to death.

=fosslils= fosslis are the best way of finding out how to learn about dinosaurs.fossils have been found in every continent of earth.They have to dig them up in sedmentary rock and clean them. Then they study the fosslis. fosils are not bones they are what left of the bones kind of like rocks.

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