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Keyword: cambrian

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  • Complex Skeletons Might Be Older Than Anyone Thought

    11/09/2015 11:07:21 AM PST · by SunkenCiv · 20 replies
    Gizmodo ^ | Sunday, November 8, 2015 | Kiona Smith-Strickland
    Most of the major groups in the animal kingdom we know today first appeared in the fossil record around 540 million years ago, which geologists consider the beginning of the Cambrian Period. It’s likely that the ancestors of these groups already existed, but since the fossil record depends mostly on skeletons being preserved in sediment that later becomes rock, the ancestors of today’s animals couldn’t really leave their mark on the fossil record until they evolved hard skeletons. And about 540 million years ago, that’s exactly what they did... Some animals had evolved the trick of building skeletons for themselves...
  • Newly discovered arthropod fossil swam in Cambrian seas

    03/30/2015 9:55:22 AM PDT · by SunkenCiv · 16 replies
    AOL ^ | March 29th 2015 | unattributed
    Paleontologists have discovered the fossilized remains of a new arthropod. Yawunik kootenayi was swimming around oceans in Canada in the Cambrian period, 508 million years ago. It's thought to share a common ancestor with today's spiders and scorpions. The arthropod had four eyes and arms lined with both tiny claws to help it feed, and long antennae to sense its surroundings. The study's lead author says species today don't have limbs that function like that. "This dual function is very, very special, because it does not appear in modern forms. If you take insects as an example, they have a...
  • Cambrian Fossil Intensifies Evolutionary Conundrum

    09/29/2014 8:17:09 AM PDT · by fishtank · 23 replies
    Institute for Creation Research ^ | 9-26-14 | Brian Thomas
    Cambrian Fossil Intensifies Evolutionary Conundrum by Brian Thomas, M.S. * New fossil finds further verify one of evolution's biggest problems: the Cambrian explosion. According to evolutionary reckoning, a massive explosion of new life supposedly spawned dozens of brand-new fully formed body plans about 530 million years ago. How could so many novel body plans emerge in such a short time while today's emergence rate of new body plans is zero? Details from newly discovered Canadian fossil fish intensify this Cambrian conundrum.1 Very few fossils show up in rock layers below the Cambriansome sponges, cnidarians, a mollusk, what look like worm...
  • Strangest Creature of Ancient Earth linked to Modern Animals

    08/20/2014 9:14:51 PM PDT · by null and void · 47 replies
    Scientific Computing ^ | Tue, 08/19/2014 - 3:08pm | University of Cambridge
    Fossil Hallucigenia sparsa from the Burgess Shale Courtesy of M. R. Smith / Smithsonian InstituteThe spines along its back were thought to be legs, its legs thought to be tentacles along its back, and its head was mistaken for its tail. The animal, known as Hallucigenia due to its otherworldly appearance, had been considered an evolutionary misfit as it was not clear how it related to modern animal groups. Researchers from the University of Cambridge have discovered an important link with modern velvet worms, also known as onychophorans, a relatively small group of worm-like animals that live in tropical...
  • Trilobites: Sudden Appearance and Rapid Burial

    02/01/2014 10:34:31 AM PST · by lasereye · 23 replies
    ICR ^ | Feb 1, 2014 | Tim Clarey, Ph.D
    Trilobites are one of the most popular fossils for collectors and are found all over the world. The Ute Indians used one species as an amulet, and there is even a cave in France called the Grotte du Trilobite that contained a relic made out of one of these extinct marine creatures.1,2 Trilobites are members of the phylum Arthropoda, which includes spiders, insects, and crustaceans. Today, members of this group make up at least 85 percent of the species on Earth and live in every environment. Insects alone account for over 870,000 of these species.1 God designed all arthropods with...
  • Another Cambrian Discovery Discredits Evolution by Jeffrey Tomkins, Ph.D.

    02/01/2013 11:10:25 AM PST · by fishtank · 32 replies
    Institute for Creation Research ^ | Jan. 30, 2013 | Jeffrey Tomkins, Ph.D.
    Another Cambrian Discovery Discredits Evolution by Jeffrey Tomkins, Ph.D. * A fossil creature from the phylum Entoprocta (invertebrate animals that have tentacles and lacking a mineralized skeleton) was found in marked abundance (over 400 individuals) in Burgess Shale. The Burgess is a sedimentary layer that's purportedly part of the Cambrian period about a half-billion years ago, according to evolutionists.1 The problem for paleontologists is that the supposedly 520 million year old creature looks exactly like its living counterparts, only up to 8 eight times larger. The Cambrian geologic system is an enigma for the evolutionary paradigm. If evolution is true,...
  • Eel-like creature identified as 'earliest human ancestor'

    03/06/2012 10:12:25 AM PST · by Renfield · 48 replies
    Telegraph (UK) ^ | 3-5-2012 | Nick Collins
    A prehistoric eel-like creature discovered in a Canadian shale bed has been identified as the earliest known ancestor of man. Fossils dating back 505 million years preserve the relics of tiny, slithering animals which are the oldest life forms ever discovered with primitive spinal cords. As the precursor of vertebrates the species is also believed to be the direct ancestor of all members of the chordate family, which includes fish, birds, reptiles, amphibians and mammals. The finding means the 5cm long creatures, known as Pikaia gracilens, were the forerunners of animals as diverse as snakes, swans and humans, scientists said....
  • Graptolite fauna indicates the beginning of the Kwangsian Orogeny

    12/03/2010 7:34:12 AM PST · by decimon · 35 replies
    Science in China Press ^ | December 3, 2010 | Unknown
    Our research at the State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, has shown, based on a refined division and correlation of the graptolite-bearing strata in southern Jiangxi, China, that the Kwangsian Orogeny commenced in the early Katian Age of the Late Ordovician. Because of its significant research value, this study is published in Issue 11 of Science China Earth Sciences. An angular unconformity separating the Lower-Middle Devonian and underlying strata is widespread in the Zhujiang region of South China, and occurs across most of Jiangxi, Hunan, Guangxi and Guangdong provinces. This angular unconformity indicates...
  • Fossil of giant ancient sea predator discovered (w/ video)

    05/28/2011 7:47:24 AM PDT · by SunkenCiv · 22 replies
    PhysOrg ^ | May 25, 2011 | Yale University
    The creatures, known as anomalocaridids, were already thought to be the largest animals of the Cambrian period, known for the "Cambrian Explosion" that saw the sudden appearance of all the major animal groups and the establishment of complex ecosystems about 540 to 500 million years ago. Fossils from this period suggested these marine predators grew to be about two feet long. Until now, scientists also thought these strange invertebrates -- which had long spiny head limbs presumably used to snag worms and other prey, and a circlet of plates around the mouth -- died out at the end of the...
  • Storming the Beaches of Norman

    10/05/2009 12:22:31 PM PDT · by GodGunsGuts · 123 replies · 5,221+ views
    Evolution News & Views ^ | October 3, 2009 | Jonathan Wells, Ph.D.
    Storming the Beaches of Norman Norman, Oklahoma, that is. Okay, so there arent any real beaches in Norman, Oklahoma. But when Steve Meyer and I went there recently, the Darwinists who have installed themselves as absolute dictators at the University of Oklahoma (OU) made our arrival feel like D-Day. On September 28, Steve gave a talk on his best-selling book Signature in the Cell at the Oklahoma Memorial Union on the OU campus. The following evening, September 29, Steve and I answered questions after a showing of the new film Darwins Dilemma at the Sam Noble Museum of Natural History,...
  • Fossil embryos deep in the fossil record (40 mya before Cambrian Explosion, yet still look "modern")

    02/06/2009 8:08:26 AM PST · by GodGunsGuts · 270 replies · 2,691+ views
    CMI ^ | Michael J. Oard
    ...The fossilized embryos shatter some ideas about evolution. Not only have certain cellular processes been pushed way back in time, but also there does not appear to be any evolution seen in these embryos, since many cellular processes, including some modern features, go clear back to the beginning of the fossil record. These embryos demonstrate that complex metazoans have been around since at least the Neoproterozoic and that from an evolutionary point of view their origins go back even further. Thus, the origin of animals is firmly based on nothing, and a huge evolutionary mystery: The origin of animals is...
  • Mollusk fossils push back evolution, ROM scientists say

    07/13/2006 6:12:42 AM PDT · by doc30 · 136 replies · 2,220+ views
    The Globe and Mail ^ | 7/13/06 | UNNATI GANDHI
    Mollusk fossils push back evolution, ROM scientists say Life 560 million years ago more advanced than previously believed, article says. Two Canadian paleontologists have discovered dozens of fossils of a soft-bodied, deep-sea dweller that lived more than half a billion years ago, adding one more piece to the enigmatic puzzle that is the history of life on Earth. The 189 well-preserved fossil specimens of Odontogriphus omalus have been interpreted as the world's oldest known soft-bodied mollusk, and were found in British Columbia's mountains in the Burgess Shale, one of the most important fossil sites in the world. The newly discovered...
  • Lower Cambrian Vendobionts from China and Early Diploblast Evolution

    05/10/2006 1:25:17 PM PDT · by furball4paws · 99 replies · 1,084+ views
    Science Magazine ^ | May 5, 2006 | Shu et al.
    Ediacaran assemblages immediately predate the Cambrian explosion of metazoans and should have played a crucial role in this radiation. Their wider relationships, however, have remained refractory and difficult to integrate with early metazoan phylogeny. Here, we describe a frondlike fossil, Stromatoveris (S. psygmoglena sp. nov.), from the Lower Cambrian Chengjiang Lagersttte (Yunnan, China) that is strikingly similar to Ediacaran vendobionts. The exquisite preservation reveals closely spaced branches, probably ciliated, that appear to represent precursors of the diagnostic comb rows of ctenophores. Therefore, this finding has important implications for the early evolution of this phylum and related diploblasts, some of which...
  • Decoding the Cambrian Radiation [or Explosion]

    05/14/2005 12:07:10 PM PDT · by PatrickHenry · 18 replies · 722+ views
    American Scientist ^ | May-June 2005 | Derek E. G. Briggs (reviewer)
    The recent surge in interest in the origins of multicellular animals (metazoans) is fueled by new evidence from three major sources: molecular sequencing, the study of evolutionary development and the discovery of exceptionally preserved fossils of Precambrian and Cambrian age, particularly from China. Genetic sequences provide a means of analyzing how the major animal groups are related and of estimating their time of origin (using the molecular clock) a means that is independent of morphological data and the record of evolutionary events the fossils reveal. The study of developmental processes in an evolutionary framework ("evo-devo") provides the link between...
  • After the Army, Clark signs up as businessman [Wesley Clark a business flop at Stephens Inc.]

    10/02/2003 8:47:26 AM PDT · by HAL9000 · 11 replies · 1,021+ views
    Arkansas Democrat-Gazette ^ | Thursday, October 2, 2003 | ANDREA HARTER
    After the Army, Clark signs up as businessman Doors open for retired general Retired Gen. Wesley Clarks business resume reads as if it belongs to an upwardly mobile executive whos had his nose to the grindstone for three decades. In the three years since he left the Army, Clark has signed on as an adviser or director with more than half a dozen companies, written two books, worked as a CNN pundit and launched a campaign to become president of the United States. The common denominator: He was working with a government he knows inside out. The information that...
  • Study suggests macroscopic bilaterian animals did not appear until 555 million years ago

    09/30/2002 7:03:42 AM PDT · by forsnax5 · 14 replies · 350+ views
    University of California, Riverside, UCR News ^ | September 26, 2002 | Dr. Mary Droser
    RIVERSIDE, Calif. -- The traces left behind by ancient animals may hold the key to determining when macroscopic bilaterians -- animals that are symmetric about a central axis, with a body divided into equivalent right and left halves, and with an anterior-posterior polarity (e.g., this includes worms, ants, and ranging up to humans) -- first appeared. A team led by Dr. Mary Droser, professor of geology at the University of California, Riverside, studied "trace" fossils, e.g., burrows, trails and tracks left behind by the earliest bilaterian animals. Results from their study suggest that bilaterian animals did not appear until approximately...