Carboniferous

II. Nature is not a Museum The gymnosperms are often called ‘Living Fossils’, or are dismissed as being primitive. Gymnosperms are indeed ancient: originating in the carboniferous period (Bowe, Coat, & dePamphilis, 2000). They can be divided into four monophyletic groups: ginkophytes, gnetophytes, cycads, and the largest of the four (with more than 600 extant species), conifers. Conifers account for the greatest diversity amongst the gymnosperms. This diversity might pale in comparison to that…

and thus to camouflage themselves. (Integrated Principles of Zoology, 15th edition, Hickman Roberts Keen, McGraw-Hill, 2011, P558) 4.2) The structure of the skull roof permits us to identify three majour groups of amniotes that diverged in the Carboniferous period of the Palezoic era. Synapsids, anapsids and diapsids. The synapsids group which includes, mammals and their ancestors, has a pair of temporal openings in the skull associated with attachment of jaw muscles. They were the first…

Daniel DiMarcella Dr. Margaret Bryans BIT 120 December 6th 2016 Biofuels: Are they the Future? Everything humans need come from our planet whether it is food, water, metals or fuels. It has been determined that if we use up any one of these resources then we will be without forever. Fossil fuels, coal, oil, and natural gas are non-renewable resources. Formed from plant and animals that lived up to 300 million years ago, fossil fuels are found in deposits deep beneath the earth. The fuels are…

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…

Sharks don’t fossilize well because they’re from the class of chondrichthyes meaning their skeletons are made of cartilage, a flexible connective tissue. This is one of the reasons why there is a disagreement over when the first shark first existed. However, shark teeth do fossilize well and sharks produce thousands of teeth in a lifetime. The oldest shark teeth date back to the Devonian Period about 400 million years ago and were found in Europe. Shark scales also fossilize well.…

The Six Great Extinctions Extinction is just another word used for the dying off of one species or of many species. Since the beginning of time there have been five mass extinction and then some smaller extinctions. Either big or small, they play a huge role in the evolution of the species around us. Whether they were a common ancestor, or a close relative to an organism, they still helped the organisms we know today evolve and adapt to the environment that we now share. During the extinction…