Remarks on rugose coral taxonomy

Fedorowski, Jerzy

doi:10.1016/j.palwor.2010.09.005

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…Both were secreted by flat, continuous ectoderm of a polyp floor (see Stacul 1955, 1959;Wells 1969;Sorauf 1970;Fedorowski 1997a for details). Thus, the difference between those structural elements can be reduced to their position: down oriented in the case of dissepiments, horizontal to strongly upward oriented in the normal tabularium and scissors-like at the periphery in the biform tabularium.…”

Section: Variation In Individual Skeletal Structuresmentioning

confidence: 99%

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On the genus Bothrophyllum Trautschold, 1879 (Anthozoa, Rugosa)

Fedorowski¹

2016

Acta Geologica Polonica

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ABSTRACT:Fedorowski, J. 2016. On the genus Bothrophyllum Trautschold, 1879 (Anthozoa, Rugosa). Acta Geologica Polonica, 66 (1), 1-41. Warszawa.The rugose coral genus Bothrophyllum Trautschold, 1879 is revised on the basis of data from the literature and the author's personal investigation of both topotypes of its type species B. conicum and related and/or similar taxa from other areas. The intraspecific variability of the type species, its neotype, the intra-generic framework and a new generic diagnosis are established. Many more than 100 taxa related and/or similar to Bothrophyllum were analyzed and the most important of them are discussed. Detailed analysis of the type species based on the neotype and supported by additional topotype specimens illustrated here, allows restriction of both the type species and the genus, and leads to the proposition that Bothrophyllum -like taxa with a shortened cardinal septum should be considered of subgeneric (not named) status. Detailed analysis of the specimens and species described and illustrated from the type site (Myachkovo Quarry, Moscow Basin) form the basis for further considerations. On the basis of that analysis and characters established for the type species, taxa from all other European, African, Asiatic and North American areas either named Bothrophyllum or bearing characters of that genus were analyzed. The supposed origin and discussion of the relationships conclude the paper. A list of synonyms and exclusions from Bothrophyllum and lists of species included, excluded, or possibly belonging to Bothrophyllum and Bothrophyllum-like corals with a shortened cardinal septum are presented.

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Section: Variation In Individual Skeletal Structuresmentioning

confidence: 99%

“…Following Hudson (1936) and Fedorowski (1997a) only the cardinal and the counter major septa are considered the protosepta.…”

Section: Introductionmentioning

confidence: 99%

On the genus Bothrophyllum Trautschold, 1879 (Anthozoa, Rugosa)

Fedorowski¹

2016

Acta Geologica Polonica

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“…Each microstructure is formed by one or more multiple elements that keep the proportions, orientations and relationships for optimal biological function. Numerous studies of Recent and fossil corals have demonstrated the value of analysing the microstructure in investigations related to palaeontology, phylogeny, geochemistry and material sciences (Sandberg ; Semenoff‐Tian‐Chansky ; Sorauf ; Rodríguez ; Fedorowski , ).…”

mentioning

confidence: 99%

Crystallographic orientations of structural elements in skeletons of Syringoporicae (tabulate corals, Carboniferous): implications for biomineralization processes in Palaeozoic corals

2014

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The crystallographic orientation of structural elements in skeletons of representatives of Carboniferous Syringoporicae (Auloporida) has been analysed by scanning electron microscopy (SEM), petrographic microscopy and electron backscatter diffraction (EBSD) on specimens from the Iberian Peninsula. The skeletons of the tabulate corals of the Syringoporicae consist of biogenic calcite crystals, and their microstructure is composed of lamellae, fibres and granules, or of a combination of these. Independent of the microstructure, the c-axis is oriented towards the lumen, quasi-perpendicular to the growth direction of the skeleton (perpendicular to the morphological axis lamellae, parallel to fibres). Most phaceloid taxa have a turbostratic distribution, as a biogenic response to prevent the cleavage of crystals. Cerioid and some phaceloid corals, whose microstructure is conditioned by wall elements, do not exhibit turbostratic distribution. Wall elements are determined by the biology of each taxon. Holacanth septal spines are composed of fibres arranged in a cone-shape structure, sometimes clamped to the external part of the corallite and show a complex crystallography. Monacanth septal spines are spindle shaped and composed of bundles of fibres. Tabulae are composed of lamellae. Their development and crystallographic orientation depends on the position of the epithelium in each case. Shared walls are formed by a combination of the walls of two independent corallites with a median lamina, composed of granules; these have a crystallographic orientation between that of the two corallites. The growth of the microstructure is derived by a coordinated stepping mode of growth, similar to other groups of organisms such as molluscs and scleractinians. The nucleation and formation of packages of cooriented microcrystals suggest a growth mode similar to mineral bridges with a competitive growth mode between each crystal. The growth pattern of corallites suggests that the growth direction is divided into two main components: a horizontal growth direction towards the lumen and a vertical direction towards the top.

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“…Formation of that skeletal element must have altered the water circulation within the polyp's cavity, its physiology, and position of its body both when active and resting. That character is most similar to analogs represented in Cyathaxonia, as reconstructed by Fedorowski (1997, fig. 7A, B).…”

Section: Microstructure and Diagenesismentioning

confidence: 55%

Vojnovskytesidae – a new family of Mississippian Rugosa (Anthozoa)

Fedorowski¹,

Kullmann²

2013

Acta Geologica Polonica

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ABSTRACT:Fedorowski, J. and Kullmann, J. 2013. Vojnovskytesidae -a new family of Mississippian Rugosa (Anthozoa). Acta Geologica Polonica, 63 (4), 657-679. Warszawa.Two new species of the genus Vojnovskytes Fedorowski, 2009, namely V. marcinowskii and V. arcuatus, and a new genus, Vojnimitor, based on the new species V. proiectus, all from Mississippian strata of northern Spain, are described. Vojnovskytes variabilis (Vojnovsky-Krieger, 1934), the type species for the genus from the lowermost Viséan strata of southern Urals, also is discussed and illustrated. Characters displayed by the taxa mentioned permit introduction of a new family Vojnovskytesidae.

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Remarks on rugose coral taxonomy

Cited by 4 publications

References 10 publications

On the genus Bothrophyllum Trautschold, 1879 (Anthozoa, Rugosa)

On the genus Bothrophyllum Trautschold, 1879 (Anthozoa, Rugosa)

Crystallographic orientations of structural elements in skeletons of Syringoporicae (tabulate corals, Carboniferous): implications for biomineralization processes in Palaeozoic corals

Vojnovskytesidae – a new family of Mississippian Rugosa (Anthozoa)

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