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Ordovician
Results: 309

#	Item
301	PDF Document Add to Reading List Source URL: pubs.usgs.gov Language: English - Date: 2010-07-20 04:02:19 Paleozoic Ordovician Orthoceras Cameroceras Endocerida Orthocerida Ormoceras Actinocerida Cincinnati Arch Nautiloids Phanerozoic Geologic time scale
302	PDF Document Add to Reading List Source URL: biology.kenyon.edu Language: English - Date: 2005-09-15 15:47:36 Extinction events Climate history Planetary science Fossils Evolutionary biology Ordovician–Silurian extinction event Ordovician Permian–Triassic extinction event Jack Sepkoski Geologic time scale Phanerozoic Historical geology
303	PDF Document Add to Reading List Source URL: www.searchanddiscovery.net Language: English Sedimentology Tectonics Michigan Basin Graptolithinia Ordovician Graben Geology Structural geology Foreland basin
304	PDF Document Add to Reading List Source URL: www.searchanddiscovery.net Language: English Petroleum geology Source rock South Pars / North Dome Gas-Condensate field Radiolarite Ordovician Zagros Mountains Petroleum Matter Physical geography Asia
305	PDF Document Add to Reading List Source URL: downloads.palass.org Language: English - Date: 2007-10-22 13:00:20 Fossils Graham Budd Ediacara biota Cambrian Derek Briggs Uppsala Palaeontological Association Maotianshan Shales Ordovician Geology Historical geology Paleontology
306	PDF Document Add to Reading List Source URL: books.nap.edu Language: English - Date: 2010-07-06 07:30:30 Ulrich Bryozoa Science Edward Oscar Ulrich Charles Schuchert Ordovician
307	PDF Document Add to Reading List Source URL: www.bryozoa.net Language: English - Date: 2009-07-12 06:23:50 Bryozoa Physical geography Cyclostomatida Gymnolaemata Cheilostomata Reef Ordovician Bryostatin Cinctipora Bryozoans Taxonomy Biology
308	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
309	Untitled Add to Reading List Source URL: acdb-ext.gsfc.nasa.gov Language: English - Date: 2009-12-30 15:02:33 Gamma-ray burst Ordovician–Silurian extinction event Extinction event Supernova Ordovician GRB 970228 Gamma-ray burst emission mechanisms Astronomy Space Nature