Sökning: "fossil"
Visar resultat 16 - 20 av 1052 avhandlingar innehållade ordet fossil.
16. Big survivors with small flowers : Fossil history and evolution of Laurales and Chloranthaceae
Sammanfattning : This thesis provides palaeobotanical evidence on Cretaceous Laurales and Chloranthaceae, and discusses and evaluates the material in a phylogenetic framework. Chloranthaceae extend back to the Barremian or Aptian and Laurales to the Albian (both Early Cretaceous). LÄS MER
17. Geology, stratigraphy, and fossil vertebrates of Gotland, Sweden : a review
Sammanfattning : The Silurian limestones of Gotland, Sweden, and their exceptionally well-preserved fossils have attracted the interest of scientists for more than 200 years. The sedimentary rocks represent approximately 10 million years of time, and were deposited in a shallow, equatorial inland sea named the Baltic Basin. LÄS MER
18. Fossil birds: Contributions to the understanding of avian evolution
Sammanfattning : The study of the evolution of birds began about 150 years ago with the finding of Archaeopteryx. Yet, many unsolved questions about avian evolution remain to be answered. This thesis aims at addressing some of these questions.The Early Cretaceous Confusiusornis is the most well-represented Mesozoic bird in the fossil record. LÄS MER
19. Remarks on the anatomy of recent and fossil Cephalopoda : with description of the minute shell structure of belemnoids
Sammanfattning : .... LÄS MER
20. Settlement and farming systems in the early Iron Age : a study of fossil agrarian landscapes in Östergötland, Sweden
Sammanfattning : .... LÄS MER