Spherulitic Crystallization as a Mechanism of Skeletal Growth in the Hexacorals.

Bryan, W. H.; Hill, Dorothy

doi:10.5962/p.351668

Cited by 95 publications

(2 citation statements)

References 8 publications

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“…An important paper by Bryan and Hill, 1941, shows this interpretation to be correct. They show that in Hexacorals the mechanism of growth is spherulitic, each trabecula of the vertical skeletal elements and each horizontal element being a spherulite, plumose and pilose aggregates respectively.…”

Section: Genusmentioning

confidence: 91%

The Devonian Tabulata of Douglas and Drummond Creeks, Clermont, Queensland

1941

The Proceedings of the Royal Society of Queensland

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This paper is a companion to a paper on the Rugose corals of this district published by Dr. Dorothy Hill in the Proceedings of the Society in 1939. It describes the Tabulate Corals collected by her and those in the collection of the Geological Survey of Queensland. The following genera and species are recorded and described:--1941. "The Devonian Tabulata of Douglas and Drummond Creeks, Clermont, Queensland." The Proceedings of the Royal Society of Queensland 53, 41-60.

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Section: Genusmentioning

confidence: 91%

The Devonian Tabulata of Douglas and Drummond Creeks, Clermont, Queensland

1941

The Proceedings of the Royal Society of Queensland

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“…2B, E). With the initiation of this new paradigm of coral skeletal formation, terms such as spherulite retain only historical meaning (see Bryan and Hill, 1941), while centre of calcification, which is still in use as a descriptive term, depicts septa with distinctive trabecular axes observed in transverse sections.…”

Section: Microstructure Of the Coral Skeleton And Terminology Of The ...mentioning

confidence: 99%

Microstructural evidence of the stylophyllid affinity of the genus Cyathophora (Scleractinia, Mesozoic)

Morycowa

Roniewicz

2015

ASGP

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The genus Cyathophora Michelin, 1843 (Cyathophoridae) is removed from the suborder Stylinina Alloiteau, 1952 and transferred to the Stylophyllina Beauvais, 1980. Morphologically, it differs from stylinine corals in that rudimentary septa are developed in the form of ridges or spines on the wall and may continue onto the endothecal elements as amplexoid septa. Relics of primary aragonite microstructure, preserved in silicified colonies of Cyathophora steinmanni Fritzsche, 1924 (Barremian-early Aptian) and in a calcified colony of C. richardi Michelin, 1843 (middle Oxfordian), indicate a non-trabecular structure of their skeletons. The sclerenchyme of radial elements is differentiated into fascicles of fibres, and in the form of fascicles or a non-differentiated layer of fibres, it continues as the upper part of endothecal elements and as the incremental layers of the wall. A micro-lamellation of the skeleton corresponds to the accretionary mode of skeleton growth found in Recent corals. A similarity between the septal microstructure of Cyathophora and that of the stylophyllid genera, the Triassic Anthostylis Roniewicz, 1989 and the Triassic-Early Jurassic Stylophyllopsis Frech, 1890, is interpreted as a result of their being phylogenetically related. The microstructure of the Jurassic Stylina gaulardi Michelin, 1843 has been considered for purposes of comparison. The systematics of the genus Cyathophora is formally revised with C. richardi Michelin reinstated as the type species.

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