From above the "Clam Wall" and below the "Spathian Gap", geographic outcrop nicknames that don't mean anything to anyone unless you have a copy of my field notes from 15 years ago, sorry. Even below M109 of anothers' notes. Not a very good fossil, but it may be important.
Monday, August 23, 2010
Tuesday, August 17, 2010
Calcite Heteromorph
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