Theropoda

Museum visitors often admire objects from the past and embrace the artwork without a proper understanding of the imagery. Viewers react to what they are looking at, comprehend the work through their own experiences and judge it based on their personal insight of success or failure. The appreciation of artwork at the American Museum of Natural History, located in New York City has educated viewers with knowledgeable information on objects from thousands of different artists. The fossil of a “Tyrannosaurus

bombed Munich, the museum and the remains of S.aegyptiacus were destroyed. The only things that remained of S.aegyptiacus were some field notes, photographs and drawings. S.aegyptiacus belonged to the clade Dinosauria, the order Saurischia, suborder theropoda and the family spinosauridae. The closest known relative of S.aegyptiacus is Baryonyx walkeri which belongs to the subfamily Baryonychinae (Buffetaut and Ouaja 2002). Most fossil specimens of S.aegyptiacus have been found in the Sahara desert in

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

Dinosaurs capture the attention of children and adults alike, and many people think that they are long gone. You might be surprised to find that they are not extinct, but rather perching in your backyard. The theory that theropods evolved into birds was proposed nearly a century and a half ago and is supported by more and more modern evidence. You will find that the distinction between birds and dinosaurs will become difficult, as they have so many parallels. The similarities between birds and dinosaurs

1. Which are more closely related to crocodiles: birds or lizards? Explain. Birds are closely related to crocodiles because they share the same ancestry with the dinosaurs. To compare the crocodile and lizard, one would think the lizard is closely related to crocodiles, as we read in our text, "similar structures don't always reveal common ancestry." Crocodiles and birds evolved having the same common ancestry as the dinosaur. Lizards, on the other hand, do not share a close common ancestor with

Hypotheses On the Origin of Birds Since the advent of the theory of evolution the origin of birds has been a thriving topic in science. Many ideas and hypotheses have been presented, but only two stand today: that birds are descendents of ancient thecodont stem reptiles, and that birds are the direct descendents of a group of dinosaurs known as the coelurosaurs. Both hypotheses pose many interesting and insightful ideas based on information obtained from the fossil record. There is not enough

Early yesterday morning, a previously undiscovered species was found above the snowline in the Mount Kosciuszko National Park, New South Wales. The discovery was made by a the well known biologist, Dr. Ella Beard, who upon curiosity of observing the snow fixed abnormally firmly to tree branches, climbed the tree and discovered these small feathered creatures perfectly disguised as cumulated snow. The creature, now known scientifically as Alborum Plumae, hides perfectly as snow lumps on tree branches

In the current times, feathers are only found in birds and provide them a unique nature. Feathers vary in size, color, shape, and arrangement on the body of the birds. They are used for various purposes such as flight, insulation, beauty, swimming and floating, support when the birds are not flying and constructing nests. It is essential to understand the origin of feathers. Evidence of the existence of feathers can be dated back to one hundred and sixty million years ago during the Last Jurassic

Topic: A Comparative Study of the Anatomical and Behavioral Similarities in Chickens (Gallus gallus domesticus) and American Crocodiles (Crocodylus acutus) Solace Mills PID: 4572168 Section U13 TA: Eduardo Gonzalez Introduction Studies have proven common ancestry between birds and crocodiles; they are classified in the same monophyletic clade, Archosauria. Archosaurs are group of diapsid amniotes. Furthermore, a genetic link has been established between birds and crocodiles. (Feduccia

Advancements in Modern Paleontology Kevin Martin INTRODUCTION   TECHNOLOGY CT & MRI Advancements in Computed Tomography and Magnetic Resonance Imaging have allowed a vast amount of research to be conducted on the fossilized remains of prehistoric creatures. In one area it has allowed the detailed study of the bone structure of these animals and how soft tissue connects to the bone. This process was carried out by studying the anatomy and bone structure of modern animals and comparing the unique