Cretaceous

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  • The Importance Of Transportation In The Cretaceous Period

    1. Short summary of the history At 145 ± 4 to 66 million years (Ma) ago, Cretaceous period was the last period of the Mesozoic Era, right after Jurassic period and followed by the Paleogene period of the Cenozoic Era (International Commission Chart, 2014). 'Creta' in Latin means chalk and this is due to the large amount of calcium carbonate deposited by shells of marine animals thus resulting in large quantities of chalk (American Geological Institute, 1972). The shifting of continents as the result of the separation of the world-continent Pangaea continued on in the Cretaceous period that led to evolution of life on land and creation of new coastlines as well as an increase in the floras and faunas with the evolution of forest (Waggoner,…

    Words: 1943 - Pages: 8
  • Sauropod Neck Structure

    Hypothesis (VBH) was re-examined after these scientists had the opportunity to review histology data for sauropod cervical ribs, discovering that there were collagen fibers attached in a length-wise fashion. They recognized that these tissues closely resemble the tissue structures found in ossified tendons and this different fiber structure would allow for a sauropod neck to have greater flexibility because the fibrous forces act parallel to the length, not perpendicular to it as the VBH…

    Words: 1452 - Pages: 6
  • Jurassic Era Research Paper

    The Mesozoic Era was a point in time about 252 to about 66 million years ago. During this era, there were three periods. The Triassic period, The Jurassic Period, and The Cretaceous period were all very significant in earth’s evolution. Not just in animals, but in land, plants, climate, and even insects. The Triassic period was the first period of the Mesozoic era and occurred between 251 and 200 million years ago. At this time the earth was very bare. The planet was recovering from an event…

    Words: 911 - Pages: 4
  • The Importance Of Existance Of Lake Malawi

    2.4. Hydrocarbon potential Previous work reveals presence of mature sedimentary sequence was derived from Jurassic to lower cretaceous periods in the north part of Lake Malawi which has hydrocarbon reservoir prospects. Existence of thick sedimentary sequence rock could possibly trap hydrocarbon especially in lower Shire valley, northern of Lake Malawi. Presence of large proportion volcanic clasts interbedded with sedimentary rocks transported by rivers present for extensive alluvial plain…

    Words: 1311 - Pages: 6
  • Sauropoda Research Paper

    Sauropoda For my dinosaur, I chose to research the Sauropoda. According to scientists, the Sauropoda was thought to be alive during the late Triassic period, which was roughly 65 million years ago. As a result of scientist’s theories, they believe that the Sauropoda was killed of at some point during the cretaceous period. Sauropoda means,”Lizard footed”. Because scientist have found more and more information about these dinosaurs, they are still coming up with different theories. The…

    Words: 431 - Pages: 2
  • Sex, Disasters, And The Extinction Of Dinosaurs By Stephen Jay Gould

    Extinction of Dinosaurs,” to compare scientific and speculative causes of dinosaur extinction. This passage is highly informative and enjoyable. Gould provides three theories-- sex, drugs, and disasters-- that capture the reader’s curiosity, allowing room for consideration. Defining science in his own words, Gould states that science is a fruitful inquiry, not a list of conclusions (Gould 400). Gould is unhappy with the failure scientists have in separating claims from methods when…

    Words: 896 - Pages: 4
  • Asteroid Impact Theory Of Dinosaur Research

    Dinosaurs, a dominating specie living in the Earth long time ago, extinct mysteriously. Paleontologists and scientists have established a variety of possible theories to explain. However, all these theories are still debatable.There are four main possible explanations: Asteroid Impact, Volcano Eruption, Falling Tide and Asteroid Impact theory was established by Luis Alvarez in 1980.Many plants and animals were disappeared abruptly from the fossil record as one moves from layers of rocks…

    Words: 570 - Pages: 3
  • Kotenai Formation

    Kootenai Formation consists of Gastropod Limestone, Upper Clastic, Middle Limestone and Lower Clastic. Gastropod limestone is typically dark gray or white when exposed, and the new rocks are in either gray color or sparkly crystals, indicating the calcium carbonate. The grains of the carbonate stones vary from fine to sand-sized. This member of the Kootenai formation preserves fossils such as gastropods that date back to the late Cretaceous period. Gastropod Fossil is from the mollusk class, and…

    Words: 1380 - Pages: 6
  • Why Does Dinosaurs Exist

    Greek that means “terrible lizard”. The Mesozoic era is divided into three approximately equal length of times periods, Triassic, Jurassic, and Cretaceous. The earliest of dinosaurs were saurischian, there are two suborders: theropods or “beast-footed” and sauropods or “reptile-footed dinosaurs. The theropods were more primitive than the sauropods. Ornithischians meaning 'bird hip joint ' in Greek, is the other classification of dinosaurs, ornithopods were one of the earliest ornithischians.…

    Words: 1228 - Pages: 5
  • The Cretaceous-Tertiary Extinction

    The K-T or the Cretaceous-Tertiary extinction, was a mass extinction over unknown origin that took out an estimated 60-75 percent of all the species on earth 66 million years ago, most famously the dinosaurs. It was the end of the Cretaceous period and the Mesozoic Era and created the beginning of the Cenozoic Era that is still happening today. Geologically speaking this extinction happened in a very short amount of time. Although the most well known species to go extincted during this time was…

    Words: 1221 - Pages: 5
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