BRAARUDOSPHAERA-PENTAGONICA N-SP, A NEW BRAARUDOSPHAERA FROM THE LOWERMOST TERTIARY OF GEULHEMMERBERG (GEULHEM, THE NETHERLANDS)

Authors
MAI H WILLEMS H PERCHNIELSEN KV
Citation
H. Mai et al., BRAARUDOSPHAERA-PENTAGONICA N-SP, A NEW BRAARUDOSPHAERA FROM THE LOWERMOST TERTIARY OF GEULHEMMERBERG (GEULHEM, THE NETHERLANDS), Micropaleontology, 43(2), 1997, pp. 202-205
Citations number
6
Categorie Soggetti
Paleontology
Journal title
Micropaleontology → ACNP
ISSN journal
00262803
Volume
43
Issue
2
Year of publication
1997
Pages
202 - 205
Database
ISI
SICI code
0026-2803(1997)43:2<202:BNANBF>2.0.ZU;2-U
Abstract
From the lowermost Danian, Biantholithus sparsus zone, the new calcare ous nannofossil species Braarudosphaera pentagonica n.sp. is described . It is composed of 12 pentaliths, each built of five segments with a pentagonal outline. All sutures between the pentaliths are zigzag shap ed. Proximal and distal faces (plate 2, figs. 3, 4) are of the same pe ntalith, illustriations obtained by the new ''turn over technique'' in troduced by Mai 1995.