Treatise Online, no. 8, Part E, Revised, Volume 4, Chapter 9F: Functional morphology of the Paleozoic stromatoporoid skeleton

Stearn, Colin W.

doi:10.17161/to.v0i0.4077

Cited by 6 publications

(12 citation statements)

References 24 publications

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“…labechiid stromatoporoids), or intracellularly secrete calcitic spherulites and cement them exosomatically (e.g. Astrosclera ) (Stearn, 1975, 2010; Wood, 1991; Reitner et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Chambered structures from the Ediacaran Dengying Formation, Yunnan, China: comparison with the Cryogenian analogues and their microbial interpretation

2017

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Enigmatic chambered structures have been reported forming reef frames in Cryogenian interglacial carbonates, prior to the commonly acknowledged microbial-metazoan reefs at the terminal Ediacaran, and interpreted as fossils of possible sponge-grade organisms. A better constraint on the affinity of these structures is partly hindered by few analogues in other time periods. This study describes similar structures from peritidal dolostones of the Ediacaran Denying Formation from Yunnan, China. Samples were investigated using optical microscopy and three-dimensional (3-D) reconstruction based on grinding tomography. The Dengying chambered structures are comparable with Cryogenian structures in basic construction, but are not frame building, and show variations in overall shape and inhabiting facies. Two-dimensional (2-D) cross-sections show that thin, homogeneous micritic laminae are the basic building blocks of the chamber walls. Thick walls represent parallel accretion of these laminae, and thin walls developed from the angular growth of a single lamina or merging of multiple laminae. In 3-D space, the laminae primarily correspond to continuous surfaces which sometimes contain sub-circular holes, while a few represent filamentous elements connected to the surfaces. The morphological features and growth pattern of the Dengying chambered structures indicate that they are likely to be calcified microbial constructions rather than skeletal remains of basic metazoans. However, aside from the Cryogenian and Dengying examples, comparable chambered constructions with laminae-based architecture are yet unknown from other fossil or extant microbialites. Further work investigating related structures is needed to determine the microbial consortia and controlling environmental factors that produced these chambered structures.

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“…labechiid stromatoporoids), or intracellularly secrete calcitic spherulites and cement them exosomatically (e.g. Astrosclera ) (Stearn, 1975, 2010; Wood, 1991; Reitner et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Chambered structures from the Ediacaran Dengying Formation, Yunnan, China: comparison with the Cryogenian analogues and their microbial interpretation

2017

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“…These are further detailed in chapters on the Internal Morphology and Functional Morphology of Paleozoic stromatoporoids (Treatise Online, Part E, Revised, vol. 4, Chapter 9C [StearN, 2011] and 9F, respectively [StearN, 2010]). Only a few comments on surface characteristics of these features are included here.…”

Section: Lateral and Terminal Growth Surfacesmentioning

confidence: 99%

Treatise Online, no. 25: Part E, Revised, Volume 4, Chapter 9B: External morphology of the Paleozoic Stromatoporoidea: Shapes and growth habits

Webby¹,

Kershaw²

2014

TREON

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“…Availability of suitable substrate also controlled individual stromatoporoid development, and because stromatoporoid substrate tolerance is so broad (see Stearn, 2010;webby & KerShaw, 2011), perhaps it is not surprising that biostromes provide the richest stromatoporoid faunas. Some stromatoporoid biostromes are demonstrably shallow; two examples are: approximately 10 m water depth suggested for many European Devonian examples (burchette, 1981, p. 119); and 10-30 m water depth for upper Llandovery of Michigan (JohnSon & mcKerrow, 1991, p. 156) and the Upper Ordovician of southern China (JohnSon, rong, & fox, 1989, p. 47).…”

Section: Stromatoporoid Reefs and Sea Level Changementioning

confidence: 99%

Treatise Online, no. 31: Part E, Revised, Volume 4, Chapter 13: Paleoecology of the Paleozoic Stromatoporoidea

Kershaw¹

2012

TREON

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Treatise Online, no. 8, Part E, Revised, Volume 4, Chapter 9F: Functional morphology of the Paleozoic stromatoporoid skeleton

Cited by 6 publications

References 24 publications

Chambered structures from the Ediacaran Dengying Formation, Yunnan, China: comparison with the Cryogenian analogues and their microbial interpretation

Chambered structures from the Ediacaran Dengying Formation, Yunnan, China: comparison with the Cryogenian analogues and their microbial interpretation

Treatise Online, no. 25: Part E, Revised, Volume 4, Chapter 9B: External morphology of the Paleozoic Stromatoporoidea: Shapes and growth habits

Treatise Online, no. 31: Part E, Revised, Volume 4, Chapter 13: Paleoecology of the Paleozoic Stromatoporoidea

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