Early Triassic (Late Griesbachian) gastropods from South China (Shanggan, Guangxi)

Kaim, Andrzej; Nützel, Alexander; Bucher, Hugo; Brühwiler, Thomas; Goudemand, Nicolas

doi:10.1007/s00015-010-0005-5

Cited by 32 publications

(44 citation statements)

References 16 publications

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“…Yang et al ., ; Forel et al ., ). However, reports of rather diversified metazoan communities in microbial deposits in the Griesbachian of South China (Brühwiler et al ., ; Kaim et al ., ; Hautmann et al ., ) question this view. Recently, Olivier et al .…”

Section: Discussionmentioning

confidence: 99%

Microbial deposits in the aftermath of the end‐Permian mass extinction: A diverging case from the Mineral Mountains (Utah, USA)

et al. 2015

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International audienceData indicate that the morphologies of the three microbialite associations are controlled primarily by accommodation, hydrodynamics, bathymetry and grain supply. This study suggests that microbial constructions are controlled by changes between trapping and binding versus precipitation processes in variable hydrodynamic conditions. Due to the presence of numerous metazoans associated with microbialites throughout the Smithian increase inaccommodation and Spathian decrease in accommodation, the commonly assumed anachronistic character of the Early Triassic microbialites and thetraditional view of prolonged deleterious conditions during the Early Triassic time interval is questioned

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Section: Discussionmentioning

confidence: 99%

Microbial deposits in the aftermath of the end‐Permian mass extinction: A diverging case from the Mineral Mountains (Utah, USA)

et al. 2015

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“…However, smooth neritimorphs are difficult to identify. Only if the shape of the aperture, of early ontogenetic shell and the status of the inner whorls (resorbed/not resorbed) are known can a sound generic assignment be proposed; open nomenclature is commonly used if these characters are unknown (Kaim et al 2010). Thus, although smooth neritimorphs are common in Early Triassic gastropod faunas, the evolutionary pathways of Neritimorpha are difficult to trace across the Paleozoic/Mesozoic boundary.…”

Section: Discussionmentioning

confidence: 99%

“…The present material resembles Naticopsis sp. described by Kaim et al (2010) from the Griesbachian of South China. It also resembles Naticopsis utahensis Batten & Stokes, 1986 from the Lower Triassic (Smithian) Sindbad Limestone (Utah, USA) but has a somewhat flatter spire.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

Early Triassic gastropods from Salt Range, Pakistan

Kaim¹,

Nützel²,

Hautmann³

et al. 2013

Bull. Geosci.

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Five gastropod species are described from the Early Triassic (Smithian, Spathian) of the Salt Range in Pakistan, which is the first detailed documentation of gastropods from this key area of the Palaeozoic-Mesozoic transition. Bellerophontoidea are represented by Warthia hisakatsui. Bellerophontoidea were widespread in the Paleozoic and had their last appearance in the early Smithian. Anisian and later reports of this group are discussed, but currently remain doubtful. Soleniscidae, a typical Late Palaeozoic caenogastropod family, are present with two new species: Strobeus batteni and S. pakistanensis. The neritimorph genus Naticopsis and the caenogastropod Coelostylina are present with one species each, provisionally treated in open nomenclature. Naticopsis? sp. shows preservation of original colour patterns, which is very rare in Early Triassic gastropods. All identified genera originated during the Paleozoic (perhaps with the exception of Coelostylina) and are thus survivors or holdovers. Warthia and Strobeus survived the end-Permian mass extinction but went extinct during the Smithian when environmental conditions deteriorated again

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“…Similar Naticopsis species have been reported from the Griesbachian microbial limestone in South China at Shanggan, Wuzhuan & Longyan (Kaim et al . ; Hautmann et al . ) and from the Smithian–Spathian rocks of the Salt Range, Pakistan (Kaim et al .…”

Section: Resultsmentioning

confidence: 99%

New data from Oman indicate benthic high biomass productivity coupled with low taxonomic diversity in the aftermath of the Permian–Triassic Boundary mass extinction

Brosse

Bucher

Baud³

et al. 2019

LET

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A new Early Triassic marine fauna is described from an exotic block (olistolith) from the Ad Daffah conglomerate in eastern Oman (Batain), which provides new insights into the ecology and diversity during the early aftermath of the Permian–Triassic Boundary mass extinction. Based on conodont quantitative biochronology, we assign a middle Griesbachian age to the upper part of this boulder. It was derived from an offshore seamount and yielded both nektonic and benthic faunas, including conodonts, ammonoids, gastropods and crinoid ossicles in mass abundance. This demonstrates that despite the stratigraphically near extinction at the Permian–Triassic Boundary, Crinoidea produced enough biomass to form crinoidal limestone as early as middle Griesbachian time. Baudicrinus, previously placed in Dadocrinidae, is now placed in Holocrinidae; therefore, Dadocrinidae are absent in the Early Triassic, and Holocrinidae remains the most basal crown‐group articulates, originating during the middle Griesbachian in the Tethyan Realm. Abundant gastropods assigned to Naticopsis reached a shell size larger than 20 mm and provide another example against any generalized Lilliput effect during the Griesbachian. Whereas the benthic biomass was as high as to allow the resumption of small carbonate factories, the taxonomic diversity of the benthos remained low compared to post‐Early Triassic times. This slow benthic taxonomic recovery is here attributed to low competition within impoverished post‐extinction faunas.

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Early Triassic (Late Griesbachian) gastropods from South China (Shanggan, Guangxi)

Cited by 32 publications

References 16 publications

Microbial deposits in the aftermath of the end‐Permian mass extinction: A diverging case from the Mineral Mountains (Utah, USA)

Microbial deposits in the aftermath of the end‐Permian mass extinction: A diverging case from the Mineral Mountains (Utah, USA)

Early Triassic gastropods from Salt Range, Pakistan

New data from Oman indicate benthic high biomass productivity coupled with low taxonomic diversity in the aftermath of the Permian–Triassic Boundary mass extinction

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