†Hilarisirex quadrangularis Takemura and Nakaseko 1982
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Polycystinea - Nassellaria - Hilarisiregidae
Belongs to Hilarisirex according to Takemura and Nakaseko 1982
Sister taxon: Hilarisirex oregonensis
Distribution:
• Jurassic of Italy (2 collections), Japan (4)
Total: 6 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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