Diversity dynamics and evolutionary patterns of Devonian Bryozoa

Ernst, Andrej

doi:10.1007/s12549-012-0086-4

Cited by 23 publications

(15 citation statements)

References 117 publications

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“…Bryozoans do not show significant extinctions during the bioevents at the Frasnian-Famennian transition (Bigey 1988;Morozova et al 2002). During these bioevents, bryozoan faunas experience rather taxonomic shifts rather than reduction in diversity and abundance (Ernst 2013). Bryozoans from the Bahram Formation display a similar pattern.…”

Section: Systematic Palaeontologymentioning

confidence: 95%

Early Famennian bryozoan fauna from the Baqer-abad section, northeast Isfahan, central Iran

Ernst

Bahrami

Parast

2020

Palaeobio Palaeoenv

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A bryozoan fauna from the Upper Devonian (lower Famennian) of the Bahram Formation of the Baqer-abad section in central Iran contains four species: three trepostomes and one rhabdomesine cryptostome. Two trepostome species and one genus are new: Anomalotoechus parvus sp. nov. and Zefrehopora asynithis gen. nov. et sp. nov. The trepostome Coeloclemis zefrehensis Ernst et al., 2017 and the rhabdomesine cryptostome Euthyrhombopora tenuis Ernst et al., 2017 were recorded previously from the Upper Devonian (Frasnian) of the Bahram Formation at the Zefreh section. The fauna is dominated by the erect ramose Euthyrhombopora tenuis, accompanied by relatively frequent Zefrehopora asynithis, which developed both the erect and encrusting colonies. The bryozoans indicate low to moderate water energy environment in a middle to outer ramp position. Low diversity and high abundance of one species indicate an environmental stress apparently caused by strong sediment deposition. No significant differences in the composition of the bryozoan assemblages of the Frasnian and lower Famennian of the Bahram Formation were observed mirroring global patterns. Keywords Bryozoa . Taxonomy . Early Famennian . Northeast Isfahan . Central Iran T h i s a r t i c l e i s r e g i s t e r e d i n Z o o b a n k u n d e r urn:lsid:zoobank.

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Section: Systematic Palaeontologymentioning

confidence: 95%

Early Famennian bryozoan fauna from the Baqer-abad section, northeast Isfahan, central Iran

Ernst

Bahrami

Parast

2020

Palaeobio Palaeoenv

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“…The patterns of feeding currents in Palaeozoic fenestrates can only be inferred from direct observation of morphologically similar living bryozoans, of which some exhibit remarkable similarities in terms of gross zoarial form and meshwork dimensions (see Taylor and Gordon, 1997;McGhee and McKinney, 2000;Starcher and McGhee, 2000, 2002, 2013McKinney et al, in preparation). These patterns are inevitably founded on assumptions that involve considering that the feeding behaviours of extinct and morphologically equivalent living bryozoans are alike.…”

Section: Inference Of Feeding Currents In Fenestrate Bryozoansmentioning

confidence: 99%

“…The earliest known superstructure-bearing fenestrates are Loculipora Hall, 1885 andUnitrypa Hall, 1885 in the Llandovery, Early Silurian; these features peaked in presence and diversity during the Devonian with twelve genera developing superstructures (Ernst, 2013) and persisted with reduced representation through the Carboniferous and into the Permian. Most of these genera belong to the Semicosciniidae, a family that appeared in the Silurian and diversified greatly in taxa and morphology during the Devonian before becoming extinct in the Early Carboniferous.…”

Section: Superstructures In Fenestrate Bryozoansmentioning

confidence: 99%

“…These morphologies represent additional evidence of novel diversification in zoarial form in the Order Fenestrata during this period, as distinct to the radiation of new taxa documented by Ernst (2013). The aim of this paper is to discuss and interpret the significance of the various growth forms within the history of bryozoans of the Order Fenestrata, particularly with regard to the generation of colony-wide feeding currents.…”

Section: Introductionmentioning

confidence: 96%

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Feeding currents: a limiting factor for disparity of Palaeozoic fenestrate bryozoans

Andrés¹,

Jackson

2015

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…Their associations tend to be dominated by members of the orders Trepostomata and Cystoporata during the Early Palaeozoic, while those of the orders Fenestrata and Cryptostomata are usually predominant in the Late Palaeozoic (Ernst 2013). The studies devoted to the Devonian bryozoan fauna of NW Spain during the last number of years reveal a well-represented, highly diverse group providing important palaeobiogeographic and palaeobiologic data (Ernst , 2011(Ernst , 2012Suárez Andrés & McKinney 2010;Ernst et al 2011;Ernst & Buttler 2012;Suárez Andrés & Ernst 2015).…”

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confidence: 99%

Fenestrate Bryozoa of the Moniello Formation (Lower-Middle Devonian, NW Spain)

Andrés¹,

Jackson²

2017

Bull. Geosci.

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Lower-Middle Devonian non-fenestellid fenestrate bryozoans of NW Spain are reported, from two coastal sections of the upper Emsian-lower Eifelian Moniello Formation, the type locality at Moniello Inlet and at Arnao. Eighteen species of non-Fenestellidae fenestrates belonging to thirteen genera and six families have been identified; nine species are new: Bashkirella arnaoense, Utropora parva, Bigeyina cantabrica, B. spinosa, Fenestrapora elegans, Paraseptopora geometrica, P. irregularis, Kalvariella antiqua and Filites robustus. Fenestrates described herein, together with earlier reported taxa of the Family Fenestellidae from the Moniello Formation show palaeobiogeographic affinities with those of neighbouring Gondwanan regions, especially with Bohemia, but also with Middle Devonian assemblages from Eastern North America. The fenestrate fauna from NW Spain comprises seven species common with the Lower Devonian of the Prague Basin (Bohemia, Czech Republic) and genera with relatively limited geographic distributions, such as Utropora and Filites. A remarkable feature of the studied fauna is the presence of several species that represent the earliest and westernmost reported occurrence of their genera, Bashkirella, Paraseptopora and Kalvariella, as well as previously reported Cavernella asturica. The occurrence of these species together with the stratigraphic and geographic position of previously reported ones indicate the existence of large gaps in the distribution of these Lazarus genera.•

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Diversity dynamics and evolutionary patterns of Devonian Bryozoa

Cited by 23 publications

References 117 publications

Early Famennian bryozoan fauna from the Baqer-abad section, northeast Isfahan, central Iran

Early Famennian bryozoan fauna from the Baqer-abad section, northeast Isfahan, central Iran

Feeding currents: a limiting factor for disparity of Palaeozoic fenestrate bryozoans

Fenestrate Bryozoa of the Moniello Formation (Lower-Middle Devonian, NW Spain)

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