Image: Middle Ordovician South Polar paleogeography - 460 Ma
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Description: Middle Ordovician South Polar paleogeography - 460 Ma
Title: Middle Ordovician South Polar paleogeography - 460 Ma
Credit: The Origin and Initial Rise of Pelagic Cephalopods in the Ordovician Published: September 30, 2009https://doi.org/10.1371/journal.pone.0007262
Author: Björn Kröger ,Thomas Servais,Yunbai Zhang
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
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