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Found 6 results

  1. The fossil record of Antarctic land mammals

    Gelfo, J.N., Goin, F.J., Bauza, N., and Reguero, M., 2019. The fossil record of Antarctic land mammals: commented review and hypotheses for future research. Advances in Polar Science. 30(3): 251-273 doi: 10.13679/j.advps.2019.0021 (open access) http://www.aps-polar.org/paper/2019/30/03/A190814000002 PDF: http://www.aps-polar.org/paper/2019/30/03/A190814000002/full Gelfo, J.N., López, G.M. and Santillana, S.N., 2017. Eocene ungulate mammals from West Antarctica: implications from their fossil record and a new species. Antarctic Science, 29(5), pp.445-455. (open access) https://www.researchgate.net/publication/318350360_Eocene_ungulate_mammals_from_West_Antarctica_implications_from_their_fossil_record_and_a_new_species https://www.researchgate.net/profile/Javier_N_Gelfo Yours, Paul H.
  2. A new normal: Study explains universal pattern in fossil record, Santa Fe Institute, June 26, 2019 https://www.sciencedaily.com/releases/2019/06/190626160341.htm http://www.terradaily.com/reports/A_new_normal_Study_explains_universal_pattern_in_fossil_record_999.html https://www.eurekalert.org/pub_releases/2019-06/sfi-ann061919.php The paper is: Rominger, A.J., Fuentes, M.A. and Marquet, P.A., 2019. Nonequilibrium evolution of volatility in origination and extinction explains fat-tailed fluctuations in Phanerozoic biodiversity. Science Advances, 5(6), p.eaat0122. (open access paper) https://advances.sciencemag.org/content/5/6/eaat0122.abstract Yours, Paul H.
  3. I've been curious about this for a long time. Nowadays, we know that oceanic trenches aren't the desolate aquatic wastelands we thought them to be, and there are animals living down there. Considering their rather extreme geologic environment I'm wondering, if it is even possible, whether they left any discernible fossil-bearing facies in the record at all? Or just discernible facies, period. A cursory search yielded no results for me. As far as I can see, sedimentation rates would be low, and any newly-formed sedimentary rocks would just get subducted and destroyed very quickly (in geological time). The only mechanism I could imagine for their preservation would be if marine snow was deposited in big enough amounts to form limestone, and if said limestone was then accreted onto the neighboring plate, rather than subducted under it. Could something like this work? Is there any literature concerning this topic, at all?
  4. Wiliam E. Bemis: "This paper briefly explores concepts of species of “fishes” in the fossil record . For an evolutionary biologist also interested in systematics, it is impossible to study any fossil species without careful study of and reference to extant species. Thus, this paper is informed by anatomical comparisons to extant fishes as well as their nomenclatural history, as exemplified by the Catalog of Fishes (Eschmeyer, 1998a, 2015), with the goal being synthesis of neontological and paleontological perspectives. The enormous literature on species concepts, speciation and systematic philosophy includes contributions specifically focused on fishes, such as papers in Ruffing et al. (2002) or Harrington and Near (2012), as well as a recent general treatment by Wilkins (2009) and extended discussions in Wiley and Lieberman (2011). But in this paper, I am chiefly concerned with practicality, for in my view, species names in the fossil record of fishes are primarily tools for discovery and organized study of paleodiversity and for communicating that information to others. Darwin (1859: 485) considered that species names, like generic names, are primarily about convenience, and convenience is important whether you are studying extant or extinct organisms." https://www.researchgate.net/publication/310934344_Species_and_the_Fossil_Record_of_Fishes
  5. oddballs,miscellaneous,incertae sedis

    In this thread I propose to post fossils(including dubio-and pseudofossils) of uncertain affinities,OR have a very sporadic fossil record,OR might be new to members of this forum . A lot of the times this will mean fossils from Lagerstatte,so considerations/musings on taphonomy will be in these articles as well Kinorhynchids(Cycloneuralia ,China): ZhangHuaqScientificReports.pdf Nematoda (age:ordovician/China): balin2013nematoda.pdf
  6. A recent panel discussion (part of Darwin Days sponsored by the Paleontological Research Institution and Cornell University in Ithaca, NY, may be of interest: http://www.thisviewoflife.com/index.php/magazine/articles/992/did-invasions-occur-in-the-fossil-record?goback=.gde_108426_member_217138337
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