Essays about: "Selachii"
Found 1 essay containing the word Selachii.
University essay from Uppsala universitet/Institutionen för geovetenskaper
Abstract : The ancestors of all modern day sharks and rays (Neoselachii) may have appeared during the Late Palaeozoic, but their major diversification happened sometime during the Early Mesozoic. Taxonomic evidence places the first neoselachian diversification in the Early Jurassic. READ MORE