Stratigraphy
Era:
System:
Series:
Stage:
Substage:
Site and situation
City:
Site:

Identification
  Shell Outline
  Side (lateral) profile 1
  Side (lateral) profile 2
  Anterior (frontal) view 1
  Anterior (frontal) view 2
  Decoration
  Position of Umbo (apex)
  Brachial apparatus
  Hinge line
  Deltidial plates

 
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