Gigantoproductid and allied productid brachiopods from the “Calcaires à Productus” (late Viséan-Serpukhovian; Montagne Noire, southern France): Taxonomy and palaeobiogeographical position in the Palaeotethys

Aretz, Markus; Legrand-Blain, Marie; Vachard, Daniel; Izart, Alain

doi:10.1016/j.geobios.2019.06.007

Cited by 8 publications

(6 citation statements)

References 37 publications

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“…In Montagne Noire, Aretz et al . (2019) described the presence of thinner Datangia shells (Viséan, 4–8 mm) than the Serpukhovian Datangia samples from this study (shell thickness ~19 mm). Moreover, Aretz et al .…”

Section: Discussionmentioning

confidence: 50%

“…Gigantoproductid taxonomy is based on descriptions of shell morphological features and key characters of the internal shell surface, such as the morphology of the cardinal process, the muscle scars, or the presence/absence of the brachial cones (Sarycheva 1928;Prentice 1950Prentice , 1956Sarycheva & Sokolskaya 1952;Muir-Wood & Cooper 1960;Ferguson 1978;Legrand-Blain 1980, 1987Legrand-Blain et al 1983;Zakowa 1985;Aretz et al 2019). Homoeomorphy is challenging in all brachiopod studies (Muir-Wood & Cooper 1960), but in gigantoproductids it is complex due to the marked similarities between genera, as Williams et al (2007) noted.…”

Section: Discussionmentioning

confidence: 99%

“…1983; Zakowa 1985; Aretz et al . 2019). Homoeomorphy is challenging in all brachiopod studies (Muir-Wood & Cooper 1960), but in gigantoproductids it is complex due to the marked similarities between genera, as Williams et al .…”

Section: Discussionmentioning

confidence: 99%

“…In Montagne Noire, Aretz et al (2019) described the presence of thinner Datangia shells (Viséan, 4-8 mm) than the Serpukhovian Datangia samples from this study (shell thickness ∼19 mm). Moreover, Aretz et al (2019) provided data about the abundance of Latiproductus and Datangia (shell thickness 4-8 mm) during the early Brigantian, which changed during the Pendleian to Kansuella sp. 1 and K. sp.…”

Section: Gigantoproductid Shell Size and Microstructure Through Timementioning

confidence: 99%

“…This poor understanding of its taxonomy is mostly due to homoeomorphy and phenotypic plasticity in response to environmental constraints of the group and lack of internal diagnostic shell characters, such as the cardinal process, muscle scars, median septum, brachial ridges and/or brachial cones, obliterated by taphonomic processes. Alternative characters have been used, such as the number of ribs per centimetre, thickness and shell length, specimen width, and curvature (Sarycheva 1928;Prentice 1950Prentice , 1956Sarycheva & Sokolskaya 1952;Muir-Wood & Cooper 1960;Conrad & Legrand-Blain 1971;Legrand-Blain 1973, 1980, 1987Ferguson 1978;Pattison 1981;Legrand-Blain et al 1983;Zakowa 1985;Lazarev 1990;Brunton et al 1995;Brunton & Lazarev 1997;Tazawa & Miyake 2002;Ibaraki et al 2008;Qiao & Shen 2012;Aretz et al 2019;Pakhnevich 2019).…”

Section: Introductionmentioning

confidence: 99%

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Gigantoproductid shell spiral and microstructure of tertiary layer: evaluation as taxonomical characters

MATEOS-CARRALAFUENTE

Coronado²,

Cózar³

et al. 2022

Earth and Environmental Science Transactions of the Royal Society of Edinburgh

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Brachiopod taxonomy is based on descriptions of shell morphology and key characters, but diagenesis generally modifies or erases some of them, hindering brachiopod identification. Brachiopods that are taxonomically related usually present shells with similar appearance but can differ in size (i.e., Rhynchonellata). Some aspects of morphology – for example the angular measurement of the curvature of the shell or details of shell microstructure – could aid taxonomic identification. Gigantoproductids, which lack a robust taxonomy, have the largest shells among brachiopods and are ideal for this kind of study because of their gigantic size and morphological variability. Furthermore, they have a great abundance and worldwide distribution during the mid-Carboniferous. More than 700 samples have been collected from Sierra Morena (Spain), Montagne Noire (France) and Adarouch (Morocco) identifying up to six gigantoproductid genera: Globosoproductus, Semiplanus, Kansuella?, Latiproductus, Gigantoproductus and Datangia. Microstructural features from 170 thin sections belonging to gigantoproductid ventral valves have been studied, and six crystal morphologies have been distinguished within the tertiary layer: subhorizontal, imbricated, crenulated, acicular, short and long columnar morphologies. Moreover, 23 complete shells from all genera have been selected to investigate shell size and curvature. Results from this study emphasise that shell size, curvature and crystal shape are taxa-related. Finally, a remarkable morphological change in the gigantoproductid populations from the western Palaeo-Tethys occurred during the Viséan–Serpukhovian, from thin-shelled genera with subhorizontal morphology (Viséan) to thick-shelled genera with a tertiary layer consisting of long columnar crystals (Serpukhovian). This study proves that microstructure, maximum thickness and shell spiral characterisation are robust characters when applied to gigantoproductid taxonomy, but also have great potential in other brachiopod groups.

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Section: Discussionmentioning

confidence: 50%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Gigantoproductid Shell Size and Microstructure Through Timementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Gigantoproductid shell spiral and microstructure of tertiary layer: evaluation as taxonomical characters

MATEOS-CARRALAFUENTE

Coronado²,

Cózar³

et al. 2022

Earth and Environmental Science Transactions of the Royal Society of Edinburgh

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Sedimentary Basins and Evolution of Reliefs Associated with the Variscan Cycle in France and Adjacent Countries

ARETZ,

NARDIN,

CHRISTOPHOUL

et al. 2023

The Variscan Belt of Western Europe 2

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Revisiting the upper Visean mud mounds from Derbyshire (UK): the role of brachiopods in their growth

Carniti

Porta

Banks

et al. 2023

Facies

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Several brachiopod-rich mud mounds occur in the upper Visean (Brigantian) of the Derbyshire Carbonate Platform succession in UK. The re-evaluation of the lithofacies architecture of a Derbyshire mud mound complex, developed in an intraplatform middle-ramp environment, led to the recognition of three lithofacies associations: (a) a 10 m thick basal unit of automicrite boundstone with siliceous sponge spicules and brachiopod–bryozoan packstone to wackestone beds; (b) a 10 m thick, 250 m wide, lens-shaped, convex-up massive core of clotted peloidal micrite and fenestellid bryozoan boundstone with sponge spicules; (c) inclined brachiopod–bryozoan–crinoid packstone flank beds. In the mud mound complex core, most of the carbonate mud with clotted peloidal and structureless micrite fabric is the result of biologically induced and influenced in-situ precipitation processes (automicrite). Brachiopods are not, as previously thought, limited to storm-scoured “pockets” in the mud mound complex core but are abundant and diverse in all lithofacies and lived on the irregular mud mound complex surface concentrating in depressions sustained by automicrite boundstone and the growth of bryozoans and sponges. The upper Visean Derbyshire mud mounds are, thus, representatives of a newly defined fenestellid bryozoan–brachiopod–siliceous sponge mud mound category, occurring in various middle–upper Visean Western European sites, a sub-type of the fenestellid bryozoan–crinoid–brachiopod Type 3 buildups of Bridges et al. (1995). These mud mounds, and other types of brachiopod-rich buildups, developed in carbonate platform settings between fair-weather and storm wave base, in dysphotic environments with dispersed food resources during the Visean. Brachiopod mud mound colonisation was favoured by moderate water depth, availability of food resources, and diverse substrates.

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Gigantoproductid and allied productid brachiopods from the “Calcaires à Productus” (late Viséan-Serpukhovian; Montagne Noire, southern France): Taxonomy and palaeobiogeographical position in the Palaeotethys

Cited by 8 publications

References 37 publications

Gigantoproductid shell spiral and microstructure of tertiary layer: evaluation as taxonomical characters

Gigantoproductid shell spiral and microstructure of tertiary layer: evaluation as taxonomical characters

Sedimentary Basins and Evolution of Reliefs Associated with the Variscan Cycle in France and Adjacent Countries

Revisiting the upper Visean mud mounds from Derbyshire (UK): the role of brachiopods in their growth

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