Trochosira polychaeta: a colonial diatom from the late Cretaceous exhibiting two contrasting chain-linking mechanisms and a wide range of preservation
Trochosira polychaeta: a colonial diatom from the late Cretaceous exhibiting two contrasting chain-linking mechanisms and a wide range of preservation
The fossil species Trochosira polychaeta Strelnikova, exhibits a wide range of preservational states that has led to contrasting interpretations with regard to its resting stage or vegetative cell status. Within shallow-buried, well preserved diatomites from the Alpha Ridge of the Arctic Ocean, a continuum of dissolution effects are documented and a vegetative cell status is clearly indicated. The chains are formed by a central linking process but complex marginal structures also constitute a complementary linking mechanism. The double linkage may have supported the integrity of the colonial chains and provided a mechanism for enhanced nutrient uptake. The presence of two distinct types of linking might also represent a stage in a transition from the Cretaceous when central linking structures were common, through the Cenozoic to the modern with more common linking through marginal structures.
trochosira polychaeta, cretaceous, diatoms, dissolution, chain linkage, transitional form
151-162
Kemp, Alan E.S.
131b479e-c2c4-47ae-abe1-ad968490960e
Davies, Andrew
dc4a10da-d700-4b73-aa81-2976d3b79576
Pearce, Richard B.
7d772b25-3ad0-4909-9a96-3a1a8111bc2f
June 2015
Kemp, Alan E.S.
131b479e-c2c4-47ae-abe1-ad968490960e
Davies, Andrew
dc4a10da-d700-4b73-aa81-2976d3b79576
Pearce, Richard B.
7d772b25-3ad0-4909-9a96-3a1a8111bc2f
Kemp, Alan E.S., Davies, Andrew and Pearce, Richard B.
(2015)
Trochosira polychaeta: a colonial diatom from the late Cretaceous exhibiting two contrasting chain-linking mechanisms and a wide range of preservation.
Diatom Research, 30 (1-2), .
(doi:10.1080/0269249X.2014.999130).
Abstract
The fossil species Trochosira polychaeta Strelnikova, exhibits a wide range of preservational states that has led to contrasting interpretations with regard to its resting stage or vegetative cell status. Within shallow-buried, well preserved diatomites from the Alpha Ridge of the Arctic Ocean, a continuum of dissolution effects are documented and a vegetative cell status is clearly indicated. The chains are formed by a central linking process but complex marginal structures also constitute a complementary linking mechanism. The double linkage may have supported the integrity of the colonial chains and provided a mechanism for enhanced nutrient uptake. The presence of two distinct types of linking might also represent a stage in a transition from the Cretaceous when central linking structures were common, through the Cenozoic to the modern with more common linking through marginal structures.
Text
Kemp_Davies_Pearce_2015.pdf
- Accepted Manuscript
More information
Accepted/In Press date: 17 December 2014
e-pub ahead of print date: 9 February 2015
Published date: June 2015
Keywords:
trochosira polychaeta, cretaceous, diatoms, dissolution, chain linkage, transitional form
Organisations:
Paleooceanography & Palaeoclimate
Identifiers
Local EPrints ID: 385055
URI: http://eprints.soton.ac.uk/id/eprint/385055
ISSN: 0269-249X
PURE UUID: 29fe7203-1918-4305-8cd8-d7855c1a830d
Catalogue record
Date deposited: 15 Dec 2015 10:31
Last modified: 14 Mar 2024 22:09
Export record
Altmetrics
Contributors
Author:
Andrew Davies
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics