Lower Ordovician trilobites of the Kirtonryggen Formation, Spitsbergen /

समान संसाधन

• The great Ordovician biodiversification event /
  प्रकाशित: (2004)
• A sea without fish : life in the Ordovician sea of the Cincinnati region /
  द्वारा: Meyer, David L.
  प्रकाशित: (2009)
• Late Ordovician articulate brachiopods from the Red River and Stony Mountain formations, southern Manitoba
  द्वारा: Jin, Jisuo, 1957-
  प्रकाशित: (2001)
• Taxonomy, evolution and biostratigraphy of conodonts from the Kechika Formation, Skoki Formation, and Road River Group (Upper Cambrian to Lower Silurian), Northeastern British Columbia
  द्वारा: Pyle, Leanne J.
  प्रकाशित: (2002)
• History of life
  द्वारा: Cowen, Richard, 1940-
  प्रकाशित: (2013)