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Xanthidium furcatum
Xanthidium furcatum Ehrenberg, 1838
Originally Xanthidium furcatum, subsequently Hystrichosphaera furcata, thirdly Ovum hispidum subsp. furcatum (combination not validly published), fourthly Spiniferites furcatus (combination not validly published).
Taxonomic senior synonym: Xanthidium (now Spiniferites) ramosum, according to Davey and Williams (1966a, p.29–33).
Taxonomic junior synonym: Geodia? tripunctata (Appendix A), according to Sarjeant (1964a, p.175).
Holotype: Not designated
Age: Late Cretaceous
Originally Xanthidium furcatum, subsequently Hystrichosphaera furcata, thirdly Ovum hispidum subsp. furcatum (combination not validly published), fourthly Spiniferites furcatus (combination not validly published).
Taxonomic senior synonym: Xanthidium (now Spiniferites) ramosum, according to Davey and Williams (1966a, p.29–33).
Taxonomic junior synonym: Geodia? tripunctata (Appendix A), according to Sarjeant (1964a, p.175).
Holotype: Not designated
Age: Late Cretaceous