Back
Surculosphaeridium stella
From Fensome et al., 2019:
Surculosphaeridium? stella (Wetzel, 1952, p.403, pl.A, fig.4; text-fig.23) Fauconnier in Fauconnier and Masure (2004, p.519). Emendation: Sarjeant, 1984c, p.135, as Surculosphaeridium phoenix subsp. stella. Holotype: Wetzel, 1952, pl.A, fig.4; Dietz et al. 1999, text-fig.6f. Originally Hystrichosphaeridium oligacanthum subsp. stella, subsequently Baltisphaeridium oligacanthum subsp. stella (Appendix A), thirdly Cleistosphaeridium? oligacanthum subsp. stella, fourthly Surculosphaeridium? phoenix subsp. stella, fifthly (and now) Surculosphaeridium? stella. Questionable assignment: Fauconnier and Pourtoy in Fauconnier and Masure (2004, p.519) as a problematic species. NIA. Age: Paleocene.
---------------------------------------------------------------------------------------------------
Original Diagnosis: W. Wetzel, 1952, p. 403
"Principal characteristics . .. are relatively stately dimensions, thick-walled capsule and processes which produce only insignificant, narrow tubes distally [and] which, as a result of their "softness" [lack of rigidity] may be bent into curves. The number of processes may vary considerably, but is perhaps in most cases to be denoted as moderate. Curvature of the processes is common, but not regular".
Surculosphaeridium? stella (Wetzel, 1952, p.403, pl.A, fig.4; text-fig.23) Fauconnier in Fauconnier and Masure (2004, p.519). Emendation: Sarjeant, 1984c, p.135, as Surculosphaeridium phoenix subsp. stella. Holotype: Wetzel, 1952, pl.A, fig.4; Dietz et al. 1999, text-fig.6f. Originally Hystrichosphaeridium oligacanthum subsp. stella, subsequently Baltisphaeridium oligacanthum subsp. stella (Appendix A), thirdly Cleistosphaeridium? oligacanthum subsp. stella, fourthly Surculosphaeridium? phoenix subsp. stella, fifthly (and now) Surculosphaeridium? stella. Questionable assignment: Fauconnier and Pourtoy in Fauconnier and Masure (2004, p.519) as a problematic species. NIA. Age: Paleocene.
---------------------------------------------------------------------------------------------------
Original Diagnosis: W. Wetzel, 1952, p. 403
"Principal characteristics . .. are relatively stately dimensions, thick-walled capsule and processes which produce only insignificant, narrow tubes distally [and] which, as a result of their "softness" [lack of rigidity] may be bent into curves. The number of processes may vary considerably, but is perhaps in most cases to be denoted as moderate. Curvature of the processes is common, but not regular".