Figure from Permian coprolites from Graphite Peak, Antarctica

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Figure 3. Permian coprolites from the Buckley Formation at Graphite Peak ( A-F ), with a sawn cross section ( D ) and photomicrograph under crossed nicols ( G ), from the Buckley Formation at Graphite Peak, central Transantarctic Mountains. White arrow in D indicates internal carbonaceous seam of helix. White arrows upper right in G show tabular near-opaque grains interpreted as paleoniscid fish scales. Scale bar for fossils: 10 cm graduated in cm and for photomicrograph 1 mm. Condon Collection, University of Oregon specimen numbers are F35111A ( A ), F35111B ( B ), F35112D ( C ), F35118C ( D ), F35119 ( E ), F35122 ( F ), and F35118C ( G ).