Essays about: "Trilobiter"

Showing result 1 - 5 of 8 essays containing the word Trilobiter.

  1. 1. Kinematic Enrolment in Four Ordovician Trilobites Using Three-Dimensional Modelling

    University essay from Uppsala universitet/Paleobiologi

    Author : Alejandro Corrales Garcia; [2023]
    Keywords : 3D modelling; Blender; Dysplanus centrotus; enrolment kinematics; Gyrometopus lineatus; Illaenus sarsi; Ordovician; trilobites; Trilobiter; Enrollering; 3D-modellering; Blender; Modelos 3D; Blender; cinematica; enrollamiento; Ordovicico; trilobites;

    Abstract : Trilobites were a successful group of marine arthropods that thrived for much of the Palaeozoic Era. Akey innovation of trilobites involved the capacity to enrol their biomineralized exoskeletons for protection; a trait that appeared early in their evolutionary history during the Cambrian Period. READ MORE

  3. 2. Paleontology and Sedimentology of the Alum Shale Formation at Björnberget, Västerbotten County, Sweden

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Mannelqvist Alexander; [2016]
    Keywords : Brachiopoda; Acrotretida; New species; New locality; Alum Shale Formation; Brachiopoda; Acrotretida; ny art; ny lokal; Alunskifferformationen;

    Abstract : A new locality of the Alum Shale Formation at Björnberget, Västerbotten County, of the lower allochthon of the Caledonian front is described herein. Two new species of acrotretid brachiopods were found. Tingitanella vilhelminia n. sp. READ MORE

  4. 3. Study of the Taxonomy and the Inter and Intra Specific Variability of Phacopidae from the Lower Devonian of Algeria: Morphometric Approach and Meaning.

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Gauthier Hainaut; [2015]
    Keywords : Paleontology; Trilobite; Devonian; Biometry; Morphometry; Covariance;

    Abstract : An Algerian Phacopid fauna, described by Lemaître in 1952, is reexamined here. Species arereevaluated in order to be in agreement with modern taxonomy. To characterize the size and shape of our specimens, as well as inter- and intraspecific variations, a morphometric analysis was performed. Only holaspids were analyzed. READ MORE

  5. 4. Linguliform Brachiopods from the terminal Cambrain to lower Ordovician Tiñu section, Mexico

    University essay from Uppsala universitet/Paleobiologi; Uppsala universitet/Universitetsbiblioteket

    Author : Barbro Bornsäter; [2008]
    Keywords : Linguliform; Brachiopods; Acrotretid; Siphonotretid; Tiñu Formation; Cambrian; Ordovician; Linguliforma; Brachiopoder; Acrotretida; Siphonotretida; Tiñu formationen; Kambrium; Ordovicium;

    Abstract : Tiñuformationen i Oaxaca, Mexiko är den enda fossilförande enheten från undre paleozoikum mellan den Laurentiska plattformen i nordvästra Mexiko och de Gondwanska lagerföljderna i Sydamerika. Det har nyligen visats att Tiñusektionen är en koncentrerad passiv kantlagerföljd med Gondwanakaraktär. READ MORE

  6. 5. Brachiopod faunal dynamics during the Silurian Ireviken Event, Gotland, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Åsa Erlfeldt; [2006]
    Keywords : Ireviken Event; brachiopods; Lilliput; Silurian; Gotland; Lower Visby Formation; Upper Visby Formation; brachiopoder; Silur; Undre Visbyformationen; Övre Visbyformationen; Earth and Environmental Sciences;

    Abstract : The brachiopod fauna from parts of the Lower and Upper Visby formations on Gotland has been investigated through a combined outcrop and literature study. The strata of these formations were formed during the Ireviken Event, one of the severest identified oceanic events on Gotland, with diversity changes and extinctions among several groups of marine taxa. READ MORE