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Showing result 1 - 5 of 18 essays matching the above criteria.

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. Parapeytoia yunnanensis: The organism that connects the upper stem-group euarthropods

   University essay from Uppsala universitet/Paleobiologi

   Author : Sebastian Axel Cockfield Larsson; [2023]
   Keywords : ;

   Abstract : The study of euarthropod evolution in the Cambrian is challenging due to controversies surrounding the identification of various anatomical features. Radiodontans are supported to be a monophyletic group to the lower stem of euarthropods. READ MORE

4. 3. Global Warming Induced by Oceanic Anoxic Event 1a Had a Pronounced Impact on the Early Cretaceous Terrestrial Vegetation of Southern Sweden

   University essay from Uppsala universitet/Paleobiologi

   Author : Marcos Amores; [2022]
   Keywords : palynology; spore-pollen; biostratigraphy; oceanic anoxic event 1a; high-latitude; Early Cretaceous;

   Abstract : The Mesozoic is punctuated by several rapid global warming events that are marked by the worldwide deposition of organic-rich marine sediments. These events, known as oceanic anoxic events (OAEs), are characterised by intervals where the worldwide carbon cycle suffers a disruption due to major palaeoceanographic and climatic shifts, leading to anoxic marine environments and the creation of black shales. READ MORE

5. 4. Echo of the Ancients: Evolution of Song in the Avian Family Cettiidae

   University essay from Uppsala universitet/Paleobiologi

   Author : Jared Goodstadt; [2022]
   Keywords : Cettiidae; song; acoustic analysis; PCA; Mahalanobis distance; phylogeny;

   Abstract : The Cettiidae, a family of primarily small, insectivorous, Asiatic and Austronesian, mountain birds have been the subject of acoustic analysis in the past. However, until this point, an in-depth review of the songs of the entire family had yet to be undertaken. READ MORE

6. 5. Sedimentary Factories and Ecosystem Change in the Triassic-Jurassic Boundary Interval : Insights from the Skåne Area (Southern Sweden)

   University essay from Uppsala universitet/Paleobiologi

   Author : Gustav Nesset Mattsson; [2021]
   Keywords : CAMP; microbial structures; End-Triassic extinction event; sedimentary structures; MISS; Triassic-Jurassic boundary; CAMP; mikrobiella strukturer; Trias-jura-utdöendet; sedimentära strukturer; MISS; Trias- juragränsen;

   Abstract : The End-Triassic Extinction (ETE) has long remained one of the lesser known among the so-called “Big Five”. There exist several hypotheses regarding the probable cause of this extinction, which can mainly be divided into  events of  a decline in the rate of diversification  in the late Triassic contra a sudden and significant extinction event. READ MORE