†Callaiosphaeridium asymmetricum Clarke and Verdier 1967
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Belongs to Callaiosphaeridium according to Davey and Williams 1966
Sister taxa: none
Distribution:
• Eocene of United States (1: Missouri collection)
• Cretaceous of Antarctica (1), Argentina (1)
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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