Following her father’s death, Mary was the primary supporter of her mother Molly and her brother Joseph. Their poverty was dire enough that they were living off of parish relief for several years . So when Mary made her first significant discovery of a marine reptile related to dinosaurs that would be christened Ichthyosaurus, it was nothing more than a financial gain to them, as Mary and her family sold the creature’s bones to a local for 23 pounds . The fossil changed hands several times before eventually being sold to the British Museum where its significance was recognized. The Fossil Hunter by Shelly Emling emphasizes the importance of Mary’s early find. Emling’s book mentions how Sir Everard Home, Britain’s leading anatomist analyzed the fossil. The creature was so strange, he was unable to put it into a specific category. Despite its very fish-like anatomy, it also had bones around the eye socket previously only seen in birds . Home eventually gave an address concerning the fossil, but never gave Mary credit for finding it. And she was not given credit either during the time that the Ichthyosaurus was displayed in the Egyptian Hall in the British Museum…
1. The author and his colleagues wanted to use 375 million old rock, because in the 385 million year old rocks they found what look like fish. In the 365 million year old rocks they found amphibians that did not look like fish, so to find the change the look at the 375 million year old rock to find transition between the two. In their paleontology work in 2004 they found sedimentary rocks in Pennsylvania and on the east coast of Greenland, but their most successful rock was found in the Artic of Canada.…
o A yardstick for measuring the absolute time of evolutionary change based on the observation that some genes and other regions of genomes appear to evolve a constant rates…
DISCUSSION QUESTIONS Chapter 1 - Finding Your Inner Fish 1. Explain why the author and his colleagues chose to focus on 375 million year old rocks in their search for fossils. Be sure to include the types of rocks and their location during their paleontology work in 2004. They chose to focus on 375 million year old rock because fish and amphibians found a few million years earlier, fish withou2t amphibian characteristics were found and a few million years later creatures with amphibian characteristics were found.…
Fossils help determine the relative age of strata because when a scientist discovers that fossil they can then place a time frame of when that organism was alive. Scientist’s already have certain time frames that they follow, so when they find a fossils that are within that strata then they can determine when that organism was alive they can then place that organism into that time frame. All three of the localities which are Paradoxides pinus within the Paleozoic Era, Billingsella corrugate which is also in the Paleozoic Era, then there is Perisphinctes tiziani I believe, which is in the Mesozoic Era, and last the Dictyoclostus americanus which is located in the Paleozoic Era, all of these are within the same relative age they are found within the same time frame as each other. The only thing that was missing in the figure on pg.68 figure 3.6 was layer D this may have been because of possible erosion or it may have never deposited at all. That is very likely that it may have existed at one time, but the erosion from may have destroyed it. Although some scientists may argue that fossils are not a good way to determine the age of some organisms I feel as though it is a good way because the fossil is found in that layer of strata so therefore it should be placed in that time frame. The fossils that where found were between the Paleozoic Era and the Mesozoic Era because of this knowledge the scientist can determine that the fossils that were found are probably between 65 million years to 251 million years old. This allows scientists to see how the Earth has changed or evolved over the different Eras.…
The hypothesis of Snowball Earth explores the possibility of the Earth’s surfaces having been frozen over during the Cryogenian period. The initial notion was thought to be from the glacial deposits which occurred around the world parallel to the same time frame. This led scientist to question whether the global freezing was the cause of this or polar glacial drift . Unfortuantley, the geologist’s theories are not in agreement with the palentologist’s model. It is a fact that if Earth was to freeze and become covered with multiple layers of ice sheets this would result in the single cell organism such as cynobacteria to have become extinct. If this was the case, then the Cambrian explosions which would have occurred after this even could not been explained. During the course of this essay, I will be analysing the geological evidence of Snowball Earth and the importance of evolution amongst complex life. Snowball Earth is the key to understanding the importance of this period as it is understood to be the trigger for multicellular evolution, which allowed the divierity of complex…
The discovery of the Comb jelly which was the first animal fossil was a shocking and unexpected event to most scientists in the world. Scientists had a specific view about evolution. They thought that organisms evolve from a simple state to a more complex state. But that was not the case for the comb jelly which unlike what scientist thought was a very complex specie. It was so complex that it had a nervous system and tissues. But that was not the only misconception that they had to face. Another problem was that scientist believed for so long that the sponge was the first animal fossil, but this discovery has changed the order of species in the tree of life. They could not find the date of when Comb jellies have first existed. But if there existence predates the existence of…
The dig had been full of surprises, trying to move the tools and volunteers safely down the 85-foot sinkhole had been a challenge. Moreover, the fossils found were well over 100,000 years old. The animals included an American lion, camel and mammoth. While the discovery in northern Utah was unique with over 300 complete fossils found to date, it was minor compared to what Samantha was looking at. As Mark her graduate student continued to remove small particles of sediment with a dentist pick, Samantha stood in wonder watching…
"The Cambrian explosion was really biology's Big Bang,", is how Andrew Parker, a life science professor at London's Natural History Museum, described the biggest upbringing of new species in all of history. Up until recently, the cause of the Cambrian Explosion has been a mystery. But, recent evidence has created a multitude of theories of how this monumental event occurred. “A sharp increase in oxygen levels in the water, new nutrients from melting glaciers, evolutionary innovation in nervous systems and vision, the rise of more capable predators, perhaps some catastrophic explosion that wiped out the shell-less creatures who lived before” are all of theories discussed. If one or more of these theories are proved to be true, then it would…
The entire procedure of discovering the H. naledi fossils was revolutionarily different from what is typically seen in the paleoanthropology community. As a group, paleoanthropologists are excessively competitive and…
The Marcellus Shale formation is located in Pennsylvania, New York, Ohio and West Virginia. This land is very popular because of its tight, deep shale formations which have the potential to hold a lot of natural gas. The Marcellus Shale is large and covers a widespread amount of land area in the Northeastern United States. Researchers say that there is a potential for the Marcellus Shale formation to hold around 500 trillion cubic feet of natural gas in its shale deposits deep beneath the earth’s surface. The most controversial element of drilling for natural gas in the Marcellus shale is the use of hydraulic fracturing. In this process large pumps are hooked up to the newly drilled well and thousands of gallons of water and chemicals are pumped into the shale formation several thousand feet below the surface. This breaks apart the hard rock, creating fissures from which the shale gas is released. Because of these safety issues I believe that we should not drill into the Marcellus Shale formation in Western New York.…
Now scientists in the fields of geomorphology, hydrology, meterology, climatology, biogeorgraph, geology, mineralogy, petrology, geochemistry, structural geology, engineering geology, stratigraphy, sedimentology, edaphology, pedology, oceanography, limnology, hydrogeology, glaciology as well as many other types of science specialists have all contributed to explain how the Earth formed and developed. Those who worked in the scientific fields of physical anthropology, primatology, archaeology, sociologists, paleontology, neurobiology, ethology, linguistics, evolutionary psychology, embryology, genetics as well as others contributed to the determination of how life and humans evolved on the…
This research is done to bring together data found by other parties concerning the Womble Shale Formation. The Womble Shale Formation is located in Arkansas, the Ouachita Mountains, and Southern Oklahoma; it was named however for its outcrop seen in Norman, Arkansas (Used to be known as Womble, Arkansas). The age of the Womble Shale Formation has been correlated to Middle Ordovician in age due to fossils found within its shale and limestone layers. The two fossils found in these layers were the graptolites and conodonts. The lithology of this formation from outcrops that have been examined shows evidence that the top layers of this formation are chert, followed by a rather large middle section of fissile shale, with thin beds of limestone…
In relation to richness in different life forms, Earth consists of about, or more than, 1.5 million different types of life forms. This proves the hypothesis of, “How present day forms of life arose from other forms of life over a considerable amount of time. As a result, biodiversity has increased throughout Earth’s history.” Another evidentiary fact is the “Lab22DiversityInTheFossilRecordData.xlsx,” which explains, and demonstrates different organisms that were discovered, and were given an estimated time they were living. A family by the name of “Tachyglossidae,” has been logged in the fossil record as supposedly living from seven million years ago, and last seen 100 years ago, were it had credibly been assumed as extinct.…
Through the combination of molecular and fossil data, we gain a better understanding to the concept of evolution and change.…