Evolution of the last koninckinids (Athyridida, Koninckinidae), a precursor signal of the early Toarcian mass extinction event in the Western Tethys

Baeza-Carratalá, José Francisco; Joral, Fernando García; Giannetti, Alice; Tent-Manclús, José Enrique

doi:10.1016/j.palaeo.2015.04.004

Cited by 31 publications

(44 citation statements)

References 74 publications

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“…This timespan comprised a period of long-term environmental changes entailing a severe biotic crisis for the Mesozoic epibenthic biota, giving rise to a conspicuous extinction event (ETMEE) and/or severe turnovers on the brachiopod fauna (e.g. Little and Benton, 1995;Vörös, 2002;García-Joral et al, 2011;Baeza-Carratalá et al, 2015;Ruban and Vörös, 2015). In the I-LS, the diversity dynamics of the brachiopod assemblages is markedly conditioned by this event, showing a high diversity in the assemblages but with a discontinuous stratigraphic distribution related with the extinction and recovery phases linked to the ETMEE (Figs.…”

Section: Discussion Critical Bioevents and Faunal Turnoversmentioning

confidence: 99%

“…4, 5), probably coinciding with the thermal maximum, just prior to the ETMEE (cf. Gómez and Goy, 2011;García Joral et al, 2011;Baeza Carratalá et al, 2015).…”

Section: Event Of Proliferation Of Liospiriferina? Undulatamentioning

confidence: 99%

“…Alméras et al, 1988;Comas-Rengifo et al, 2013 or even in the Mediterranean Subbetic area (Baeza-Carratalá, 2013;Baeza-Carratalá et al, 2015), thecideids have not been documented as constituents of such assemblage.…”

Section: Thecideid Marker Horizonmentioning

confidence: 99%

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Lower Jurassic brachiopods from the Ibero-Levantine Sector (Iberian Range): Faunal turnovers and critical bioevents

Baeza-Carratalá

Joral

Tent-Manclús

2016

Journal of Iberian Geology

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Brachiopod fauna from the peri-Iberian platform system is well-known in the Late Pliensbachian-Toarcian interval. However, the diversity dynamics and the stratigraphical distribution of this group in the Ibero-Levantine Sector of the Iberian Range require more accurate analysis due to the patchy distribution of the outcrops. The abovementioned timespan involved a period of changes in long-term environmental conditions which led to a severe extinction and critical turnovers on the brachiopod fauna (ETMEE). The Ibero-Levantine sector has notable palaeobiogeographical significance as it represents the south-easternmost outcrops of the Iberian Range connecting with the Betic Domain positioned in the South-Iberian Palaeomargin. In this region, the brachiopod fauna has been arranged into six assemblages, showing a discontinuous stratigraphic distribution since its diversity dynamics is markedly conditioned by the extinction phases linked to the ETMEE: Ass. 1, recorded in the Spinatum-lower Tenuicostatum chronozones; Ass. 2, mainly recorded in the Tenuicostatum chronozone; Ass. 3, typifying the lower Serpentinum chronozone; Ass. 4, documented in the Serpentinum-lowermost Bifrons chronozones; Ass. 5, recorded in the Bifrons-Variabilis chronozones, and Ass. 6, distinctive of the Pseudoradiosa-Aalensis chronozones.The faunal succession shows strong affinities with the Euro-Boreal province, what rules out the transitional or even Mediterranean palaeogeographical affinity previously attributed to the southernmost part of this area. Amidst the main brachiopod-based bioevents must be considered the predominance of the genus Lobothyris in the pre-ETMEE assemblages, the conspicuous record of Liospiriferina? undulata, distinctive taxon of the north-African margin and, especially, the first record in the Iberian Peninsula of thecideid marker beds prior to the ETMEE. After the opportunistic strategy conducted by Soaresirhynchia bouchardi the distribution of the post-ETMEE brachiopod assemblages is markedly influenced by the depositional sequences, entailing premature turnovers and involving the earlier record of homeomorphic morphotypes of younger terebratulides and rhynchonellides.Keywords: Brachiopods, Western Tethys, Early Jurassic, palaeobiogeography, mass extinction, faunal turnovers Resumen Las sucesiones de braquiópodos en el Pliensbachiense superior-Toarciense, ampliamente reconocidas en las plataformas marginales de Iberia, carece de un registro preciso en el sector Ibero-Levantino de la Cordillera Ibérica. Este intervalo engloba un periodo de cambios ambientales significativos, incluyendo un severo evento de extinción y reemplazamiento que condiciona notablemente la distribución de los braquiópodos (ETMEE). El sector Ibero-Levantino posee un especial interés paleobiogeográfico, representando el extremo sudoriental de la Cordillera Ibérica, en contacto con los afloramientos de directriz Bética del paleomargen sud-Ibérico. En esta región, se han definido seis asociaciones que muestran gran similitud con las del res...

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Section: Discussion Critical Bioevents and Faunal Turnoversmentioning

confidence: 99%

“…4, 5), probably coinciding with the thermal maximum, just prior to the ETMEE (cf. Gómez and Goy, 2011;García Joral et al, 2011;Baeza Carratalá et al, 2015).…”

Section: Event Of Proliferation Of Liospiriferina? Undulatamentioning

confidence: 99%

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Lower Jurassic brachiopods from the Ibero-Levantine Sector (Iberian Range): Faunal turnovers and critical bioevents

Baeza-Carratalá

Joral

Tent-Manclús

2016

Journal of Iberian Geology

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“…Further records are also assigned to Orthotoma in deposits assigned even to the Pliensbachian-Toarcian transition such as Orthotoma sp. from the latest emaciatum-lowermost polymorphum zones (elisa-mirabile subzones) in the easternmost Subbetic area (Baeza-Carratalá 2013, Baeza-Carratalá et al 2015 and Orthotoma quenstedti regarded as becoming extinct within the extinction interval of the Pliensbachian-Toarcian boundary (Harries & Little 1999). …”

Section: Record Of the Etmee In The Ce Sectionmentioning

confidence: 99%

“…Vörös 2002). Amidst the Early Jurassic brachiopods, the profuse record and extinction of the koninckinid fauna can be used as a precursor signal of the main biotic crisis event within this multi-phased extinction interval (Baeza-Carratalá et al 2015). The present work analyzes the evolutionary trends of several taxa belonging to these extinct and survivor groups in La Cerradura Section (CE section hereinafter), located in the South-Iberian palaeomargin, close to the Gondwana palaeomargin, with ocean dynamics influenced by the convergence of the Spanish Corridor connecting the Western Tethys and the Proto-Atlantic seaway.…”

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confidence: 99%

New deep-water brachiopod resilient assemblage from the South-Iberian Palaeomargin (Western Tethys) and its significance for the brachiopod adaptive strategies around the Early Toarcian Mass Extinction Event

Baeza-Carratalá¹,

Reolid²,

Joral³

2017

Bull. Geosci.

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The Pliensbachian-Toarcian transition was a period of changes in long-term environmental conditions leading up to the Early Toarcian Mass Extinction Event (ETMEE), which resulted in a noticeable extinction and turnover in the marine biota. The westernmost Tethyan basins, especially the peri-Iberian platforms, provide an exceptional brachiopod record to better understand the adaptive strategies and the severe ecological effects of these faunas within the marine ecosystems. This event marks a critical interval in the evolutionary history of the Phylum Brachiopoda as two orders, the Athyridida and Spiriferinida, became extinct. Evolutionary patterns displayed by several taxa from these groups and some rhynchonellids typifying deep-water habitats are analyzed across this biotic crisis spanning several Mediterranean and NW-European basins. New work performed in La Cerradura section, a deep pelagic trough from the South-Iberian palaeomargin, reveals two new taxa (Koninckodonta sumuntanensis and Atychorhynchia falsiorigo) herein described. This newly documented fauna supports pre-extinction dwarfing and resilience in deep refugia linked to the ETMEE, and an episode of speciation which is interpreted in terms of a pre-extinction radiation. In the ETMEE repopulation phase an opportunistic strategy occurs typified by Soaresirhynchia bouchardi, and a case of homoplasy involving post-extinction pioneers (Elvis taxon) is detected. Similar adaptive strategies occurred associated with other mass extinctions such as the Permian/Triassic and the Cretaceous/Paleocene events, supporting a possible standard pattern in the response of the brachiopod fauna to such biotic crises and shedding light on the ecological effects of the mass extinction events. •

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The Late Triassic–Middle Jurassic Passive Margin Stage

Gómez

Aguado

Azerêdo

et al. 2019

The Geology of Iberia: A Geodynamic Approach

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Evolution of the last koninckinids (Athyridida, Koninckinidae), a precursor signal of the early Toarcian mass extinction event in the Western Tethys

Cited by 31 publications

References 74 publications

Lower Jurassic brachiopods from the Ibero-Levantine Sector (Iberian Range): Faunal turnovers and critical bioevents

Lower Jurassic brachiopods from the Ibero-Levantine Sector (Iberian Range): Faunal turnovers and critical bioevents

New deep-water brachiopod resilient assemblage from the South-Iberian Palaeomargin (Western Tethys) and its significance for the brachiopod adaptive strategies around the Early Toarcian Mass Extinction Event

The Late Triassic–Middle Jurassic Passive Margin Stage

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