• Thumbnail for Ammonoidea
    explosively diversified during the Early Jurassic, with the orders Psiloceratina, Ammonitina, Lytoceratina, Haploceratina, Perisphinctina and Ancyloceratina...
    49 KB (5,527 words) - 23:25, 24 March 2024
  • Thumbnail for Jurassic
    explosively diversified during the Early Jurassic, with the orders Psiloceratina, Ammonitina, Lytoceratina, Haploceratina, Perisphinctina and Ancyloceratina...
    227 KB (24,488 words) - 10:18, 27 March 2024