Non Avian Dinosaurs Research Paper

     Are birds really dinosaurs or are they simply related? That is a question that has gained new life in recent years due to the overwhelming facts the are pouring in from newly found fossils and studies from fossils that have been found in the past. Two groups have formed in the study of this question: those who believe birds are a direct result of dinosaurs and those who feel dinosaurs and birds must have had a common ancestor. Determining which view is correct is a matter of opinion based on fact. The main problem involves the use of cladistics or phylogenetic systematics to group organisms according to characteristics they share. When one looks at dinosaur fossils, he or she may feel that certain

The Glen Rose Trackway is a 107-million-year–old series of fossilized dinosaur footprints. Excavated from the bed of the Paluxy River in Texas, the trackway gives a picture of dinosaurs that in some ways is more striking than that offered by fossils. Collected in 1938, the smaller prints are from a theropod, a dinosaur that walked on two hind feet. The larger ones were probably left by a plant-eating sauropod, such as Apatosaurus, the hind feet of which measured 3 feet in length. Birds are dinosaurs. Just as humans are both primates and mammals because we descended from the first primate and the first mammal, birds are dinosaurs because they descended from the first theropod and the first dinosaur. Their upright stance came from the very first dinosaur.

Many other animals besides dinosaurs lived during the Cretaceous. These animals were very diverse and included pterosaurs, ancient flying reptiles,

The Tyrannosaurus rex has a bone-crushing force skull, massive and long legs, and a brain that has a strong sense of smell. These characteristics were beneficial to the T-rex. First, the jaw of the T-rex was able to crush their prey's bones and drag the meat further which is also known as puncture and pull strategy. Next, the T-rex legs were massive and long especially in the juvenile stage because it had the strength of an adult legs which they were able to fast walk. Lastly, the T-rex had a strong sense of smell and binocular vision which can easily capture their prey. On the other hand, their arms were shortened relative to the size of T-rex body. There was no evidence that the T-rex used their arms for predation or scavenging.

Could birds be the closest relative there is to a dinosaur? Well they have said to of survived the comet that hit Earth and wiped out the dinosaurs as they were able to hang in the skies out of danger. Another common feature that birds have over mammals and other animals is that they are egg laying just like reptiles and discoveries show that the eggs have the same micro structure. Palaeontologists compared the skeletal characteristics of dinosaur skeletons and bird skeletons and saw that both had many common traits. Hollow, thin walled bones, S shaped curved neck, 4 toed but only supported by three main toes and many

I think that we shouldn’t create a chickenosaurus because it can be somewhat dangerous to other people or living organisms due to it transforming into a dino-like creature it will also receive having a dino’s personality that is wild and dangerous. The chickenosaurus can be too aggressive because it had been modified into more of a instinctive animal that tries to live or survive from long ago. It also can be trained for the worse, it can be used for destruction due to people wanting to own something like a place, People like corrupted people can re-create a chicken for their own personal use like for inappropriate things or bad things. If it is trained nicely it can also still be turned too the worse if the chickenosaurus doesn’t deserve or

Stegosaurus is a genus of armored dinosaur. Their fossilized bones have been found in rocks dating to the late Jurassic period, between 155 and 150 million years ago, in the western United States and Portugal. Colorado is when the very first Stegosaurus fossil was found in 1876. Stegosaurus was designated the official state fossil of Colorado in 1982. Colorado is where the the very first stegosaurus fossil was found in

Both the reading and the lecture discuss that whether the fine lines in the fossil are Sinosauropteryx's feathers or not. The reading proposes three reasons that Sinosauroptyx is not a feathered dinosaur. The lecture disagrees, and says that those three reasons are incorrect.

Lisa Randall, a cosmologist who studied at Harvard, affirms on her theory that sixty-¬six million years ago, based on her dark-matter disk model, a miniscule tic, caused by an invisible force in the distant reaches of the cosmos, threw a comet three times the width of Manhattan towards the Earth at about 38,500 miles per hour. The crash created the most powerful earthquake of all time and released energy a billion times that of an atomic bomb, like a burning incinerator, the atmosphere dramatically heated and killed three-quarters of life on Earth. As a result, creatures less than 55 pounds survived; among them were some dinosaurs: the Microraptor that stood about 16 inches, the Theropod which averaged about two feet long and weighed about seven pounds and the Saltopus, also standing about two feet. As you might know, ordinary matter contains an

The fossils of non-avian dinosaurs (the Group of birds) found almost only below the K-T boundary, paleontologists mostly estimate that the dinosaurs were extinguished just before, or during the event.

An example would be to compare modern day birds to dinosaurs, which would allow professionals to assemble a phylogeny relating certain characteristics that they may share and how they have evolved over time. Birds are a unique species that have feathers and fused arm bones that are not present in other theropods (Zimmer and Emlem, 2013). The evolution of bird traits began prior to the existence of birds, as theropods would not have been able to use feathers for flight purposes as their arms were too short and unable to lift them off the ground (Zimmer and Emlem,

The differences between Ceratopsian dinosaurs can be identified by examining size, shape of crest and number and placement of horns. Deinonychus had a curved claw on one toe, several inches long, that was used for jumping onto and wounding large prey when hunting in packs. Dunkleosteus was a massive cannibalistic armored fish that swam the oceans millions of years before anything even vaguely resembling human life walked the earth. These are all things that I would gladly have informed you of when I was roughly five years old. I was infatuated with all things prehistoric, and not in the typical manner of the kid wearing a t-rex t-shirt and pretending that the floor was lava. I was at natural history museums every chance I got, and I was dead

Dinosaurs lived over 65 million years ago, part of their existence was in pangea which broke up 200 million years ago. There were three periods. The triassic period, the jurassic period, and the cretaceous period.

It was hypothesized that the the two theories in the article had both happened at the same time. Each theory came with a tentative temperature drop or rise that estimates what would have happened if the asteroid/volcano happened. They say we need to superimpose the two to get what would have happened if they both occurred. However, these two temperatures contradict one another. It was said that the volcanic eruption would have caused the temperature to rise, while the asteroid would have caused the temperature to drop. I haven’t done the math, but it seems to me that these together might make the temperature remain around normal, meaning the temperature couldn’t have affected the number of dinosaurs on the Earth.

Dinosaur extinction: An analysis of events and theories that possibly led to the dinosaurs' demise.