2007/10/01 by Lukas Hottinger, E. Caus · 1 citation
Earth and Planetary Sciences · #Geological formations and processes #Geology and Paleoclimatology Research #Paleontology and Stratigraphy of Fossils
paper · doi:10.2113/gsjfr.37.4.372
openalex publication_date 2007/10/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/17
Research Article| October 01, 2007 SHELL ARCHITECTURE IN THE LATE CRETACEOUS FORAMINIFERAL SUBFAMILY CLYPEORBINAE SIGAL, 1952 Lukas Hottinger; Lukas Hottinger 1Museum Natural History, CH 4001 Basel, Switzerland. Search for other works by this author on: GSW Google Scholar Esmeralda Caus Esmeralda Caus 3 2Department of Geology, Universitat Autònoma de Barcelona, E 08193 Bellaterra, Spain. 3Correspondence author. E-mail: [email protected] Search for other works by this author on: GSW Google Scholar Journal of Foraminiferal Research (2007) 37 (4): 372–392. https://doi.org/10.2113/gsjfr.37.4.372 Article history received: 15 Jun 2001 accepted: 13 May 2007 first online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Lukas Hottinger, Esmeralda Caus; SHELL ARCHITECTURE IN THE LATE CRETACEOUS FORAMINIFERAL SUBFAMILY CLYPEORBINAE SIGAL, 1952. Journal of Foraminiferal Research 2007;; 37 (4): 372–392. doi: https://doi.org/10.2113/gsjfr.37.4.372 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyJournal of Foraminiferal Research Search Advanced Search Abstract The shell architecture of the genera Sirtina, Neumannites, Vanderbeekia and Clypeorbis is analyzed in detail, and the genera are assigned here to the subfamily Clypeorbinae Sigal, 1952. The Clypeorbinae, which lacks folia and any kind of plates in its spiral chambers, must be removed from the rotaliids. The subfamily represents a Tethyan group of Late Cretaceous, spiral, benthic foraminifera that tended to become orbitoidiform in parallel with a Caribbean group, consisting of Sulcoperculina, Vaughanina, Pseudorbitoides and cohorts (Pseudorbitoidinae Rutten, 1935, including Sulcoperculina), all of which developed supplemental skeletons with extensive canal systems. The transition from spiral to cyclical, orbitoidiform species within the Clypeorbinae was accompanied by the development of (primarily dorsal) lateral chamberlets. This development is interpreted as a transformation of elongate alar prolongations of involute spiral chambers into lateral chamberlet cycles that are arranged in a chessboard pattern. The functional significance of the dorsal superstructure as a greenhouse for symbionts is considered as driving the frequent and repetitive trend to acquire orbitoidiform shell architecture. The structural analysis for the taxonomy in this work resulted in validation of the genus Neumannites Rahaghi, 1976, attribution of the species Iranites ornatus Rahaghi, 1976 to the genus Sirtina and introduction of a new species Vanderbeekia catalana. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.