Back
Cleistosphaeridium pilosum
From Fensome et al., 2019:
Cleistosphaeridium pilosum (Ehrenberg, 1854, pl.37, section 8, fig.4) Davey et al., 1966, p.170. Emendation: Erkmen and Sarjeant, 1980, p.51, as Sentusidinium pilosum. Holotype: Ehrenberg, 1854, pl.37, section 8, fig.4. Combination not validly published: basionym not fully referenced. NOW Sentusidinium pilosum. Originally Xanthidium pilosum
(Appendix A), subsequently Hystrichosphaera pilosa (combination not validly published), thirdly Hystrichosphaeridium? pilosum, fourthly Baltisphaeridium pilosum (Appendix A), fifthly Ovum hispidum subsp.
pilosum (combination not validly published; Appendix A), sixthly Cleistosphaeridium pilosum (combination not
validly published), seventhly Tenua pilosa, eighthly (and now) Sentusidinium pilosum, ninthly Batiacasphaera
pilosa, tenthly Barbatacysta pilosa. Age: Oxfordian.
---------------------------------------------------------------------------------------------------
Description as Xanthidium pilosum:
Sarjeant, 1968, p.231:
Diagnosis:
Shell elongate ovoidal to ellipsoidal, the apex most often lost. Spines very numerous (in excess of 500), short (between one-quarter and one eight of the shell breadth), tapering from the base, pointed or capitate distally but always closed. They are hollow, the spine cavity connecting with the shell interior.
Dimensions:
Holotype: overall length 53 µm. Range of English specimens: overall length 40-60 µm. Range of French specimens: overall length (apex lacking) 34-38 µm, breadth 34-36 µm, shell length 30-31 µm, breadth 30-31 µm.
Cleistosphaeridium pilosum (Ehrenberg, 1854, pl.37, section 8, fig.4) Davey et al., 1966, p.170. Emendation: Erkmen and Sarjeant, 1980, p.51, as Sentusidinium pilosum. Holotype: Ehrenberg, 1854, pl.37, section 8, fig.4. Combination not validly published: basionym not fully referenced. NOW Sentusidinium pilosum. Originally Xanthidium pilosum
(Appendix A), subsequently Hystrichosphaera pilosa (combination not validly published), thirdly Hystrichosphaeridium? pilosum, fourthly Baltisphaeridium pilosum (Appendix A), fifthly Ovum hispidum subsp.
pilosum (combination not validly published; Appendix A), sixthly Cleistosphaeridium pilosum (combination not
validly published), seventhly Tenua pilosa, eighthly (and now) Sentusidinium pilosum, ninthly Batiacasphaera
pilosa, tenthly Barbatacysta pilosa. Age: Oxfordian.
---------------------------------------------------------------------------------------------------
Description as Xanthidium pilosum:
Sarjeant, 1968, p.231:
Diagnosis:
Shell elongate ovoidal to ellipsoidal, the apex most often lost. Spines very numerous (in excess of 500), short (between one-quarter and one eight of the shell breadth), tapering from the base, pointed or capitate distally but always closed. They are hollow, the spine cavity connecting with the shell interior.
Dimensions:
Holotype: overall length 53 µm. Range of English specimens: overall length 40-60 µm. Range of French specimens: overall length (apex lacking) 34-38 µm, breadth 34-36 µm, shell length 30-31 µm, breadth 30-31 µm.