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Spiniferites reginaldii
Spiniferites ?reginaldii (Mantell, 1844, p.240; text-fig.53, no.5) Mantell, 1854, p.91. Emendation: Sarjeant, 1967c, p.244–245, as Hystrichosphaera reginaldii.
Originally Xanthidium (Acritarch), subsequently (and now) Spiniferites, thirdly Hystrichosphaera, fourthly Baltisphaeridium (Acritarch), fifthly (and now) Spiniferites?. Questionable assignment: Stover and Evitt (1978, p.191) as a problematic species.
Holotype: Mantell, 1844, text-fig.53, no.5; Sarjeant, 1967c, figs.3A–B,4–5; Sarjeant, 1992a, figs.2,4a–b.
Age: Late Cretaceous.
Diagnosis: Sarjeant, 1967, p.244-245: Hystrichosphaera reginaldii
A species of Hystrichosphaera having an ovoidal shell with a punctate surface. The sutures bear processes of very varied form; sometimes curved or erect, with branched, digitate or foliate tips. The processes may anastomose distally or may be linked to one or more neighbouring processes by short trabeculae: or they may be isolate. Length of processes typically one-third of the shell breadth.
Originally Xanthidium (Acritarch), subsequently (and now) Spiniferites, thirdly Hystrichosphaera, fourthly Baltisphaeridium (Acritarch), fifthly (and now) Spiniferites?. Questionable assignment: Stover and Evitt (1978, p.191) as a problematic species.
Holotype: Mantell, 1844, text-fig.53, no.5; Sarjeant, 1967c, figs.3A–B,4–5; Sarjeant, 1992a, figs.2,4a–b.
Age: Late Cretaceous.
Diagnosis: Sarjeant, 1967, p.244-245: Hystrichosphaera reginaldii
A species of Hystrichosphaera having an ovoidal shell with a punctate surface. The sutures bear processes of very varied form; sometimes curved or erect, with branched, digitate or foliate tips. The processes may anastomose distally or may be linked to one or more neighbouring processes by short trabeculae: or they may be isolate. Length of processes typically one-third of the shell breadth.