Essays about: "Frida Hybertsen"

Found 2 essays containing the words Frida Hybertsen.

1. 1. Distribution of Sabellidites (Annelida?) in the Basal Cambrian of the Digermulen Peninsula, Arctic Norway

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Frida Hybertsen; [2017]
   Keywords : Ediacaran; Cambrian; Sabellidites; biostratigraphy; Digermulen Peninsula; Arctic Norway; Ediacara; kambrium; Sabellidites; biostratigrafi; Digermulen;

   Abstract : The Digermulen Peninsula, Arctic Norway, offers a unique section of late Ediacaran to Cambrian sediments in an almost complete succession within the Vestertana Group. The proposed annelidan fossil Sabellidites cambriensis is found here, within the Lower Breidvika Member and is believed to exist also in the underlying Manndrapselva Member of the Stáhpogieddi Formation. READ MORE

3. 2. Dinosaur Warfare: Ankylosaur and Theropod Coevolution

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Christopher Freer; [2017]
   Keywords : ankylosaur; theropod; coevolution; phenotypic mismatch; red queen; tyrannosaurid; ankylosaurier; theropoder; samevolution; phenotypic mismatch; röd drottning; tyrannosaurid;

   Abstract : Ankylosauria is a clade of armoured dinosaurs that, throughout the Mesozoic, demonstrates divergent evolution of defensive traits, between the robust spikes and osteoderms of nodosaurids to the ankylosaurid tail clubs and lightweight armour. One of the longer-standing hypotheses, which is supported by histological data, stipulates that armament was a direct result of a predator-prey relationship between theropods and ankylosaurians. READ MORE