Thoracosphaera arctica Appendix B
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"arctica" Gilbert and Clark, 1983, p.400, pl.1, figs.1–15. Holotype: Gilbert and Clark, 1983, pl.1, fig.1. NOW Caracomia. Originally Thoracosphaera, subsequently Sphaerodinella, thirdly (and now) Caracomia. Age: late Miocene–Holocene.
Parent: Thoracosphaera_Appendix B