Morphological variations in Cycloclypeus carpenteri
- Author(s)
- Antonino Briguglio, Shunichi Kinoshita, Erik Wolfgring, Johann Hohenegger
- Abstract
In this work, 17 specimens of Cycloclypeus carpenteri have been analysed by means of microCT scanning. It has been observed that many specimens possess multiple embryos, multiple nepionts and some tests show more than one equatorial layer. The diameter of each proloculus has been measured, and it seems that they are very variable even within the same specimen, therefore questioning the long known theory that schizonts have smaller proloculi than gamonts and also questioning the fact that proloculi in the same species should all have comparable size. Whenever the nepionts are positioned on different planes, thus creating an angle between them, this angle has a significant correlation to the angle connecting different equatorial layers. T-shaped connections are located at the junction between two equatorial layers; these junctions are made by a chamberlet, which possesses an unusually higher number of apertures, resembling the chamberlet structure of the genus Spiroclypeus.
- Organisation(s)
- Department of Palaeontology, Department of Geology
- External organisation(s)
- Universiti Brunei Darussalam (UBD)
- Journal
- Palaeontologia Electronica
- Volume
- 19
- DOI
- https://doi.org/10.26879/595
- Publication date
- 01-2016
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105118 Palaeontology
- Keywords
- ASJC Scopus subject areas
- Oceanography
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/a9f06e56-eb4b-4292-8b68-64444e317233