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  • Paratypes
  • Taxonomic type specimens
  • Paratypes
  • Taxonomic type specimens
  • Paleogeneral
  • Rhynchonellata
  • Paleogeneral
  • Rhynchonellata
  • North Atlantic Ocean
  • 1930s
  • NMNH - Paleobiology Dept.
  • Brachiopoda
  • Brachiopoda
  • Rhynchonellata
  • Rhynchonellata
  • Terebratulida
  • Terebratulida
  • Megathyrididae
  • Megathyrididae
  • Argyrotheca johnsoni Cooper
  • Argyrotheca johnsoni Cooper