CATALOG - Retesphaera


Folder trail: Farinacci -> Calcispheres -> Retesphaera
Folders this level: Asterosphaerella, Bonetocardiella, Cadosina, Cadosinella, Calcigonellum, Calciodinellum, Carinellum, Carpistomiosphaera, Cervisiella, Colomisphaera, Favolithora, Hemistomiosphaera, Kainoconus, Lebessphaera, Nephrodinella, Obliquipithonella, Orthopithonella, Palinosphaera, Parastomiosphaera, Pithonella, Retesphaera, Scrippsiella, Stomiosphaera, Thoracosphaera,

Original descriptions of taxa. For coccolithophores, and many calcispheres, these are pages from the Catalog of Calcareous Nannofossils. In other cases (e.g. non-calcifying haptophytes) the data is directly complied on this site. The "Catalogue of Calcareous Nannofossils" was compiled by Prof A. Farinacci 1969-1989 and updated by Richard Howe 2000-2016 - see also this page.
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status uncertain

Current identification/main database link: Retesphaera Hildebrand-Habel, Willems & Versteegh 1999

Compiled data

Citation: Retesphaera Hildebrand-Habel, Willems & Versteegh 1999
Rank: Genus
Type species: Retesphaera diadema Hildebrand-Habel, Willems & Versteegh 1999
Standardised type level: 080_UPPER CRETACEOUS


Original Description
Monocarinate calcareous dinoflagellate cysts charac- terized by a spherical to antapically, conically lengthened central body. A circlet-like rim of coarser crystallites frames the apical side of the central body. The single-layered wall consists of small idiomorphous rhombohedrons in irregular orientation. The crystallites are arranged around pores, thus forming reticular distal and proximal surface sculptures. The circular archaeopyle has an apical orientation and is probably formed by the release of the paraplate 3'.

Etymology: Latin, rete, net; Greek, sphaira, sphere. Based on the reticular surface structure of the basically spherical central body of the cysts.

Extra details from original publication
Remarks: This genus differs from other reticulate sculptured genera in the monocarinate shape and the frequently occurring conically lengthened hypocyst. Only one species, Retesphaera diadema, is known.

References:

Hildebrand-Habel, T., Willems, H. & Versteegh, G. J. M. (1999). Variations in calcareous dinoflagellate associations from the Maastrichtian to Middle Eocene of the western South Atlantic Ocean (São Paulo Plateau, DSDP Leg 39, Site 356). Review of Palaeobotany and Palynology. 106: 57-87. gs


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Retesphaera: Catalog entry compiled by Anna Farinacci and Richard Howe. Viewed: 22-9-2019

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