radiolaria - rads_cenozoic - Buryella kaikoura radiolaria - rads_cenozoic - Buryella kaikoura

Buryella kaikoura


Classification: rads_cenozoic -> Artostrobiidae -> Buryella -> Buryella kaikoura
Sister taxa: B. clinata, B. dumitricai, B. foremanae, B. granulata, B. helenae, B. insensis, B. kaikoura, B. pentadica, B. petrushevskayae, B. tetradica, B. sp.

Taxonomy

Citation: Buryella kaikoura Hollis 1997
taxonomic rank: species
Basionym: Buryella kaikoura Hollis 1997
Synonyms:
1991 Buryella sp. - Hollis plate 21 figure 17
1991 Buryella tetradica - Hollis (part.) p. 139
1997 Buryella kaikoura - Hollis pl. 21, figs. 14,15

Catalog entries: Buryella kaikoura

Description


Published descriptions


Hollis 1997 - Buryella tetradica

 

Description: Fusiform test of four segments with smooth outline. Cephalis spheroidal, sparsely perforate with short apical horn and distinct vertical pore directly above indistinct collar stricture. Thorax inflated conical, with circular pores loosely quincuncial in three rows. Third segment largest, inflated medially, pores in 4-6 transverse rows; pores also longitudinally aligned. Final segment thinner, inverted truncate-conical, with circular to elliptical pores arranged in 2-7 transverse rows.

Remarks: Longitudinal alignment of abdominal pores and transverse alignment in some specimens is poorly developed in early forms of this species.


Hollis 1997 - Buryella tetradica

DESCRIPTION: Fusiform test of four segments with smooth outline. Cephalis ellipsoidal, sparsely perforate with short apical and distinct vertical pore directly above indistinct collar stricture. Thorax inflated conical with circular pores loosely quincuncial in three rows. Third segment largest, inflated medially, pores quincuncial in 5-7 rows. Final segment thinner, rarely preserved, inverted truncate to conical with circular to elliptical pores arranged in at least two transverse rows.REMARKS: Distinguished from B. tetradica by regular quincuncial arrangement of abdominal pores (ie. not longitudinally aligned); from B. formanae by smooth outline, more rows of pores on the abdomen and a delicate fourth segment that has, as yet, not been observed intact; from B. clinata by a broader test, a much weaker apical horn, and not having any abdominal pores arranged in distinct diagonal rows.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Thanetian Stage (55.96-59.24Ma, top in Thanetian stage). Data source:
First occurrence (base): within Selandian Stage (59.24-61.61Ma, base in Selandian stage). Data source:

Plot of occurrence data:

References:

Hollis, C. J. (1991). Latest Cretaceous to Late Paleocene Radiolaria from Marlborough (New Zealand) and DSDP Site 208. Thesis, University of Auckland. 1-308. gs

Hollis, C. J. (1997). Cretaceous-Paleocene Radiolaria from eastern Marlborough, New Zealand. Institute of Geological & Nuclear Sciences, Monograph. 17: 1-152. gs


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Buryella kaikoura compiled by the radiolaria@mikrotax project team viewed: 17-7-2024

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=206279 Go to Archive.is to create a permanent copy of this page - citation notes



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