Calcareous Nannofossil Genus Scyphosphaera: Structure, Taxonomy, Biostratigraphy, and Phylogeny

@article{Siesser1998CalcareousNG,
  title={Calcareous Nannofossil Genus Scyphosphaera: Structure, Taxonomy, Biostratigraphy, and Phylogeny},
  author={William G. Siesser},
  journal={Micropaleontology},
  year={1998},
  volume={44},
  pages={351-384}
}
  • W. G. Siesser
  • Published 24 January 1998
  • Environmental Science
  • Micropaleontology
Scyphosphaerids are frequently encountered in low-latitude Miocene-Pliocene sediments. The genus first evolved in the early Eocene (calclcareous nannofossil Zone NP12), but abund diversityance and diversity remained low until middle Miocene Zones NN5-NN6, when global radiation began. More new species (24) evolved during the Miocene NN5-NN6 and NN9 zonal intervals than at any other time. The abundance acme for the genus is the late Miocene (NN9)-late Miocene NN9-late Pliocene (NN15) interval… 
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in the family Pontosphaeraceae (Calcihaptophycideae, Haptophyta)
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ABSTRACT Strata exposed near the town of Santa Maria di Catanzaro in southern Italy comprise the accepted stratotype for the Calabrian Stage (earliest Pleistocene). Although a Pliocene-Pleistocene
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