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Found 6 results

  1. Some hints on the extinction of our cherished Meg: Trophic position of Otodus megalodon and great white sharks through time revealed by zinc isotopes (link to nature communications) Great white sharks may have contributed to megalodon extinction (link to science daily) Franz Bernhard
  2. Some of you may have seen my ammonite donation. If not and you are curious it is linked here: It is an important player in this trip. Anyway I thought I might describe my first trip to this locality and why you might realize it is a little more rare than the normal finds there. Some of this is part of a poster for the now cancelled Rocky Mountain Section of the Geological Society of America so if I ever do get to put my poster online I will post a link here so you guys can look at it too. For now here is a trip report.
  3. Tappert_GCA_2013.pdf Stable carbon isotopes of C3 plant resins and ambers record changes in atmospheric oxygen since the Triassic Ralf Tappert , Ryan C. McKellar , Alexander P. Wolfe , Michelle C. Tappert , Jaime Ortega-Blanco , Karlis Muehlenbachs Geochimica et Cosmochimica Acta 121 (2013) 240–262 about 3,5 MB lovely paper,highly recommended contains a possibly useful list of "amberiferous" locations worldwide NB:peer-reviewed, "technical"
  4. doushantuo

    North American Silurian

    Useful! Cramer_et_al_11a.pdf
  5. doushantuo

    Givetian North America

    Amongst other things,the article shows North American Paleogeography in the Devonian The correlation chart for Mid-Devonian geochemical events ain't bad ,either Zambito_givetitaghaeventisotop_2015.pdf
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