• Quaternary of Indian Ocean (2 collections), South Pacific (8)

• Miocene of Indian Ocean (22), North Pacific (1), South Pacific (8)

• NN1 of Indian Ocean (3), South Pacific (1)

• Oligocene to Miocene of North Atlantic (2), South Pacific (3)

• Oligocene of Germany (1), Indian Ocean (17), North Atlantic (7), North Pacific (31), South Pacific (44)

• H. alabamensis HOZ of South Pacific (11)

• NP21 of North Pacific (7)

• Eocene to Oligocene of Indian Ocean (3), North Pacific (1), South Pacific (11)

• Eocene of Indian Ocean (23), Jordan (1), Namibia (1), North Atlantic (86), South Pacific (164), Tonga (1), the United Kingdom (1), United States (2: Georgia, North Carolina)

• Paleocene to Eocene of Indian Ocean (2), North Atlantic (3), South Pacific (2)

• Paleocene of Argentina (1), Indian Ocean (2), North Atlantic (7)

• Cretaceous of Indian Ocean (2)

Total: 481 collections each including a single occurrence

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