Arenig

#	Item
11	The Lower Ordovician (upper Floian) bathyurid trilobite Aponileus Hu, with species from Utah, Texas, and Greenland Add to Reading List Source URL: www.mapress.com Language: English - Date: 2012-04-29 16:08:21 Arenig Magnolia Trilobite Zootaxa Extinction Paleontology Biology Ordovician
12	PDF Document Add to Reading List Source URL: www.gi.ee Language: English - Date: 2004-05-24 17:00:00 Hirnantian Silurian Graptolithinia Arenig Ordovician Historical geology Geology
13	PDF Document Add to Reading List Source URL: brage.bibsys.no Language: English - Date: 2013-08-01 08:12:59 Cloacaspis Ordovician Balnibarbi Svalbardites Arenig Trilobite Graptolithinia Triarthrus Paleozoic Phanerozoic Phyla