A new Silurian<i>Avicenia</i>(Tabulata): taxonomy, growth pattern, and colony integration

Zapalski, Mikołaj K.; Nowiński, Aleksander

doi:10.5252/g2011n4a1

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…Similar to modern photosymbiotic scleractinians, they show high levels of colony integration [12,37]. Growth rates in tabulates are diversified and have been used as an argument against photosymbiosis in this systematic group [14].…”

Section: Discussionmentioning

confidence: 99%

Evidence of photosymbiosis in Palaeozoic tabulate corals

Zapalski

2014

Proc. R. Soc. B.

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Coral reefs form the most diverse of all marine ecosystems on the Earth. Corals are among their main components and owe their bioconstructing abilities to a symbiosis with algae (Symbiodinium). The coral-algae symbiosis had been traced back to the Triassic (ca 240 Ma). Modern reef-building corals (Scleractinia) appeared after the Permian-Triassic crisis; in the Palaeozoic, some of the main reef constructors were extinct tabulate corals.

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Section: Discussionmentioning

confidence: 99%

Evidence of photosymbiosis in Palaeozoic tabulate corals

Zapalski

2014

Proc. R. Soc. B.

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“…The intracolonial variation of corallite diameters and wall thickness is low, as compared to that of alveolitids [ 3 ] and comparable with that of some heliolitids [ 50 ]. Wall thickness is also less variable than in alveolitids, yet it may reach V close to 0.2.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

Tabulate Corals after the Frasnian/Famennian Crisis: A Unique Fauna from the Holy Cross Mountains, Poland

2016

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Famennian tabulate corals were very rare worldwide, and their biodiversity was relatively low. Here we report a unique tabulate fauna from the mid- and late Famennian of the western part of the Holy Cross Mountains (Kowala and Ostrówka), Poland. We describe eight species (four of them new, namely ?Michelinia vinni sp. nov., Thamnoptychia mistiaeni sp. nov., Syringopora kowalensis sp. nov. and Syringopora hilarowiczi sp. nov.); the whole fauna consists of ten species (two others described in previous papers). These corals form two assemblages—the lower, mid-Famennian with Thamnoptychia and the upper, late Famennian with representatives of genera ?Michelinia, Favosites, Syringopora and ?Yavorskia. The Famennian tabulates from Kowala represent the richest Famennian assemblage appearing after the F/F crisis (these faunas appear some 10 Ma after the extinction event). Corals described here most probably inhabited deeper water settings, near the limit between euphotic and disphotic zones or slightly above. At generic level, these faunas show similarities to other Devonian and Carboniferous faunas, which might suggest their ancestry to at least several Carboniferous lineages. Tabulate faunas described here represent new recruits (the basin of the Holy Cross mountains was not a refuge during the F/F crisis) and have no direct evolutionary linkage to Frasnian faunas from Kowala. The colonization of the seafloor took place in two separate steps: first was monospecific assemblage of Thamnoptychia, and later came the diversified Favosites-Syringopora-Michelinia fauna.

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“…This locality used to be rich in erratic boulders and provided silicified specimens of tabulate corals. The investigated material is most probably of Scandinavian or Estonian origin (Stasińska ; Zapalski & Nowiński ). Specimens used in this study came from the Anna Stasińska collection (from the late 1950s).…”

Section: Geological Backgroundmentioning

confidence: 99%

Blastogeny in tabulate corals: case studies using X-ray microtomography

Zapalski

Dohnalik

2013

LET

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X‐ray microtomography (XMT) is a non‐invasive and non‐destructive method that has often been used to study fossils. It allows serial sections to be made as little as few micrometers apart; such a resolution is unachievable for classical serial sectioning; moreover, in contrast to the latter, the specimen is not destroyed. Microtomography can, however, be applied only in cases where differences in X‐ray absorption between the skeleton and its infilling are great. We show that this method may be also applied to tabulate corals. Case studies of blastogeny are based on Silurian (Aulopora, Favosites) and Devonian (Thamnopora) specimens from Poland. We show that the sequence of events in the blastogeny of Aulopora sp. is different from that of ‘Aulopora serpens minor’ from the Devonian of the Holy Cross Mountains and similar to auloporids from the Devonian of England. Blastogeny in Favosites is very similar to that known from the related genera Squameofavosites and Thamnopora. This suggests that members of the genus Aulopora may be more diversified within the genus (as presently understood) than genera within the Favositidae.

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A new SilurianAvicenia(Tabulata): taxonomy, growth pattern, and colony integration

Cited by 5 publications

References 8 publications

Evidence of photosymbiosis in Palaeozoic tabulate corals

Evidence of photosymbiosis in Palaeozoic tabulate corals

Tabulate Corals after the Frasnian/Famennian Crisis: A Unique Fauna from the Holy Cross Mountains, Poland

Blastogeny in tabulate corals: case studies using X-ray microtomography

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