Charliella rossae n. gen., n. sp., from the Tethyan realm: Remarks on the evolution of Late Permian biseriamminids

ALTINER D., ALTINER S.

JOURNAL OF FORAMINIFERAL RESEARCH, vol.31, no.4, pp.309-314, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 31 Issue: 4
  • Publication Date: 2001
  • Doi Number: 10.2113/0310309
  • Journal Name: JOURNAL OF FORAMINIFERAL RESEARCH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.309-314
  • Middle East Technical University Affiliated: Yes

Abstract

The name Charliella is proposed for a new biseriam-minid genus characterized by a four-layered wall that I thickens along the anterior side of the septa and partially occludes the chamber cavity. Charliella rossae was derived from the Globivalvulina graeca-Globivalvulina vonderschmitti lineage which also constituted the root stock of true Paraglobivalvulina (P mira) in Late Permian time. The Globivalvulina decrouezae-Septoglobival-vulina gracilis-Paraglobivalvulinoides septulifer lineage is another trend in the evolution of biseriamminids. The recognition of such a lineage in the Late Permian necessitates taxonomic revision of the biseriamminids to attribute globular and involute forms with thin and undifferentiated walls to Septoglobivalvulina, a genus which was synonymized under Paraglobivalvulina in previous work.