Orthosphaeridium Eisenack 1968

Orthosphaeridium inclui 5 filhos:

• Orthosphaeridium chondrododora Loeblich & Tappan 1971
• Orthosphaeridium inflatum Loeblich 1969
• Orthosphaeridium insculptum
• Orthosphaeridium latispinosum
• Orthosphaeridium vibrissiferum Loeblich & Tappan 1971
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