Transitional fossil

Rhonda Moore Bio/ Lecture 1101 D957 October 2, 2016 Radioactive Dating A) Any method of determining the age of earth materials or objects of organic origin based on measurement of either short-lived radioactive elements or the amount of long-lived radioactive element plus its decay product. Example: B) Look at the diagram below which represents the radioactive decay of uranium- 238. The shaded area represents the decay product which is lead-206. The half…

Therapsida – *Therapsida is a group of synapsids, and includes mammals and their ancestors. *They were advanced mammal like reptiles that appeared during early Jurassic and became dominant land animal during middle Permian period. *They evolved from a group of pelycosaurs called sphenacodonts. *The legs are positioned more vertically…

passage states that dinosaur fossils have been found even in polar regions. This shows that dinosaurs might have been able to regulate their body temperature. However, the lecturer contradicts this point by arguing that polar regions when dinosaurs existed were much warmer than today, and when the regions were ice-cold during winter, dinosaurs might have been able to migrate to warmer areas or hibernate like modern reptiles. Therefore, the presence of dinosaur fossils in polar regions does not…

Missouri’s Geology Missouri is home to a wide variety of geological history as well as treasure which can be found throughout the state. From its wonderful variety of caves to the rock columns in the state parks of the south as well as the mines. The soil is as rich in diversity as the plant and animal life, from the north to the south as well as the east to the west. It can be dated back as far as before there was life on this planet and at one time even had an ocean over it. It is truly…

Imagine finding fossils of an undiscovered sauropod while adventuring with some friends. Well that is what happened to Elmer S. Riggs. He discovered the first fossils of the Brachiosaurus. In 1900, Riggs found a partial skeleton of a Brachiosaurus in the rocks of the Brushy Basin Membrane of the Morrison Formation. The fossils were studied and information on this species was revealed. Brachiosaurs lived in the late Jurassic period, which was about 145 to 156 million years ago. The Jurassic…

Radiocarbon dating was invented similarly with the discovery of the Dead Sea Scrolls. Furthermore, due to the long duration of time elapse, it was hard to date the time when the scrolls were produced. Although the hot and dry climate of the Dead Sea prevented it from rotting severely, it was still difficult to exclude the containments included in the fragments and scrolls. As a result, the process of processing the samples was intricate. At the first part of the process, the scientists tried to…

Shocking local discovery opens doors in paleontology Introduction: It is our pleasure to Introduce you to Surgasaurolus! This small lizard like creature was discovered only three months ago, in our very own town. The creature of the early jurassic period can tell us tons about the past of our planet. As the creature was discovered by Kathrine Surgay, scientists wanted to name it Surgasaur at first, but taken to account its size, settled on Surgasaurolus as the suffix “olus” is used as a…

The fossil record; what is it? First of all we need to know what a fossil is. A fossil is evidence of a life from years ago which has been preserved in some way. This includes impressions or remains of an organism embedded in strata (Biology Online, 2011). Now that you have an idea of what fossils are, what is the fossil record? The fossil record provides information about the history of life on earth through the placement of fossils within the rock strata. The fossil record also shows how a…

In this article, the author, Mauro Jose Cavalcanti discusses how he conducted a thorough analysis of all the species within Sphyrna by utilizing “matrix representation with parsimony” to produce a phylogenetic supertree. In order to produce an accurate supertree, he applied morphological data regarding the evolution of the cephalofoil and he examined the likely adaptive implication of the unique hammerhead morphology. Cavalcanti discussed that the cephalofoil allows better maneuverability in the…

Holy moly! I didn't know that dinosaurs had feather and the food pyramid was getting confusing. That is wierd how the food pyramid can confusing. Also what we encountered with strange animals. I get this text form two articles “The Explosion In What We Know About life Forms. Also another article called “ The Half-Life of Facts. The dinosaur had feather. Also the food pyramid is getting confusing. People have stated that the food pyramid have been changing over the time. Therefor people also…