Cyclopsinellid structure

From Foraminifera
Jump to: navigation, search
Fig. 1. Endoskeletal patterns in discoidal shells (after Hottinger, 1967); F1-2: New genus (possibly related to Pastrikella) from the Pyrenean Upper Cretaceous in Northern Spain. The endoskeleton consists only of septula. There is but one median annular preseptal passage and it occupies the total radial extension of the annular chamber. There are only two planes of stolons. F1: an oblique section at a low angles with respect to the equatorial plane shows the radial disposition of the apertural axes and of the septula. F2: a transverse section parallel to the shell axis shows that the stolon axes on the two stolon planes are superposed. Abbreviations: f: foramen; prp: preseptal space; s: septum; sl: septulum; (Hottinger, 2006; fig. 47)[1] CC/BY-NC-SA)


Definition

  • according to Hottinger (2006):

CYCLOPSINELLID STRUCTURE - arrangement of endoskeletal elements as in Cyclopsinella: the arrangement of endoskeletal pillars following the pattern of the radial stolon axes superposed in a radial position in neighbouring stolon planes. This particular pattern has a tendency to produce a more or less complete fusion of the pillars into a median shell wall.



See also

References

Hottinger (1967), Foraminifères imperforés du Mésozoïque marocain, Notes et Mémoires du Service géologique, Rabat, N° 209, p. 5-168 Hottinger (2006), Illustrated glossary of terms used in foraminiferal research. Carnets de Géologie, Memoir 2, ISSN 1634-0744

                                           | Foraminifera  |  FORAM-Links | Contributors