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  • Chondrichthyes
  • Paleogeneral
  • Chondrichthyes
  • Paleogeneral
  • Blake, S. F.
  • Calvert County
  • Maryland
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  • Calvert County
  • Maryland
  • North America
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  • 1930s
  • NMNH - Paleobiology Dept.
  • Chondrichthyes
  • Chondrichthyes
  • Carcharhiniformes
  • Carcharhiniformes
  • Carcharhinidae
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  • Hemipristis serra Agassiz
  • Hemipristis serra Agassiz
  • Chesapeake Group
  • Chesapeake Group
  • Calvert Fm
  • Calvert Fm