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Soft Bodied Animals Early Cambrian Rocks Large
1,105 wordsIn Namibia, where the rock record is excellent, Vendian fossils are followed immediately by Cambrian fossils, and they may have overlapped briefly in time. In Siberia, a whole suite of small shelly fossils appears in the rocks as the Cambrian period begins, together with sponges of several different types. Most of the small shells are tiny cones and tubes that we don't understand properly, but at least some of them are complex animals, including the first molluscs. Soon, archaeocyathid sponges w...
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Million Years Ago Five Hundred
1,312 wordsOn Saturday 12 th 2000, my family and I went on a float trip on the Huzzah River in Steelville, Missouri. The Huzzah River and its surroundings were a perfect location for me to look for my fossil. Since the water level was shallow, that enabled me to look to the river bottom. Almost immediately after I began my search near the edge of the river, I spotted a rock that appeared to have some sort of shell embedded in it. I decided this would be a good specimen for me to try to examine and identify...
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Rapid Expansion Blue Green
1,211 wordsUp until 1947, it was believed that the Cambrian Explosion marked the first true abundance of multicellular life. However, this was discovered to be untrue after Sir Douglas Mawson and R. C. Spring mistakenly came across numerous "fossil jellyfish" in the Ediacaran Hills while observing what was originally believed to be sandstones belonging to the lowest strata of the Cambrian. At first, these finding were dismissed as "fortuitous inorganic markings. " (AAS Biographical Memoirs. ) Several years...
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The End Permian Mass Extinction
3,001 words... verify the Chinese reports of iridium and they are fruitless. Anomalies can cause a build up of iridium in one place which would lead to what the Chinese have discovered (Erwin, 1993). Cosmic Radiation Global Cooling Global Warming Salinity The hypothesis that salinity decrease caused the mass extinction of oceanic life was first formed by Beurlen in 1956 (Maxwell, 1989). Evidence for this phenomena was based mainly on stenohaline groups such as the bryozoans, ostracods and corals which were...
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Missing Link Isn T
448 wordsCreation vs evolution, was man created be an almighty god, or is he simply a product of modern science. This question has puzzled scholarly minds for many years and yet will for many to come. The one that makes the most sense to me and has the most supporting evidence, is evolution. Not the normal, goop to fish to creature to monkey to man, obviously I skipped some, but one not so greatly known. It is called punctual equilibrium. Punctual equilibrium is a type of evolution stating that the evolu...
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Million Years Ago Mass Extinction
10,014 wordsEarth probably began Extinction Introduction Earth probably began about 4. 5 billion years ago. A history of this life on Earth is recorded in fossil remains and traces of past life. It is a record of evolution for both life and the planet. Life and the planet have co-evolved, with life causing changes to the planet which in turn drive changes in life. The Fossil Record A history of these changes is recorded in the layers or strata of rock laid down over the millions of years, and by changes in ...
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