Permian-Triassic Extinctions and Rediversifications

Brayard, Arnaud; Bucher, Hugo

doi:10.1007/978-94-017-9633-0_17

Cited by 20 publications

(17 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the age of the Permian-Triassic boundary (PTB; Burgess and Bowring, 2015;Baresel et al, 2017) and of the early-middle Anisian boundary (Ovtcharova et al, 2015) this unstable state persisted for at least 5.4 Myr before waning during the middle Anisian. Until a new equilibrium state was restored during the Anisian, the recovery of the marine benthos lingered, thus markedly differing from the diversification-extinction crises of the nekton (Orchard, 2007;Brayard and Bucher, 2015) that were alternating with the ecological crises of terrestrial plants (Hochuli et al, 2016). The low competition within the shelly benthos most likely contributed to this delay (Hautmann et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of the Largest Carbon Isotope Excursion During the Early Triassic Biotic Recovery

et al. 2020

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Dynamics of the Largest Carbon Isotope Excursion During the Early Triassic Biotic Recovery

et al. 2020

Self Cite

View full text Add to dashboard Cite

“…1 myr after the PTBME (Brayard et al . ; Zakharov & Abnavi ; Zakharov & Popov ; Brayard & Bucher ). In this context, the Smithian is a crucial ~0.7 myr long interval recording the first major, global ammonoid diversification–extinction cycle after the PTBME (Fig.…”

mentioning

confidence: 99%

Palaeobiogeographical distribution of Smithian (Early Triassic) ammonoid faunas within the western USA basin and its controlling parameters

et al. 2018

Self Cite

View full text Add to dashboard Cite

We present the first quantitative palaeobiogeographical analysis in terms of distribution and abundance of Early Triassic ammonoids from the western USA basin during the Smithian, c. 1 myr after the Permian–Triassic boundary mass extinction. The faunal dataset consists of a taxonomically homogenized compilation of spatial and temporal occurrences and abundances from 27 sections distributed within the western USA basin. Two complementary multivariate techniques were applied to identify the main biogeographical structuring recorded in the analysed presence/absence data: additive cluster analysis using the neighbor‐joining algorithm (NJ) and non‐metric multidimensional scaling (NMDS). Regarding abundance data, a taxonomic diversity (sensu evenness) analysis was coupled with graphical comparisons of relative abundances of selected taxa. The identified relationships indicate that middle Smithian ammonoids of the western USA basin were geographically organized in terms of both distribution and abundance, with the biogeographical distinction of a southern and a northern cluster. This N–S structuring in the distribution and abundance of middle Smithian ammonoids is notably paralleled by the relative amount of siliciclastics, which suggests that clastic load of the water column was a major controlling factor. In marked contrast with the middle Smithian, the studied late Smithian ammonoid assemblages do not show any significant differences, whatever the depositional environment. This abrupt biogeographical homogenization, independent from intrabasinal facies heterogeneity, indicates a switch from regional to global drivers, associated with the well‐known late Smithian global extinction and remarkable cosmopolitan ammonoid distributions during that time.

show abstract

“…There were mass extinction events at the end of the Permian and Triassic when drastic taxonomic turnovers of ammonoid fauna occurred (e.g., House, 1988 ; Monnet, Brayard & Brosse, 2015 ; Brayard & Bucher, 2015 ; Longridge & Smith, 2015 ). In the Early Triassic and Early Jurassic, origination rates of ammonoids were high (Ceratitida originated in the Triassic and Lytoceratina and Ammonitina originated in the Jurassic; Neige & Rouget, 2015 ; Yacobucci, 2015 ; Longridge & Smith, 2015 ), which probably indicate radiations into open niche followed mass extinction events.…”

Section: Discussionmentioning

confidence: 99%

Geological duration of ammonoids controlled their geographical range of fossil distribution

Wani

2017

PeerJ

View full text Add to dashboard Cite

The latitudinal distributions in Devonian–Cretaceous ammonoids were analyzed at the genus level, and were compared with the hatchling sizes (i.e., ammonitella diameters) and the geological durations. The results show that (1) length of temporal ranges of ammonoids effected broader ranges of fossil distribution and paleobiogeography of ammonoids, and (2) the hatchling size was not related to the geographical range of fossil distribution of ammonoids. Reducing the influence of geological duration in this analysis implies that hatchling size was one of the controlling factors that determined the distribution of ammonoid habitats at any given period in time: ammonoids with smaller hatchling sizes tended to have broader ammonoid habitat ranges. These relationships were somewhat blurred in the Devonian, Carboniferous, Triassic, and Jurassic, which is possibly due to (1) the course of development of a reproductive strategy with smaller hatchling sizes in the Devonian and (2) the high origination rates after the mass extinction events.

show abstract

Permian-Triassic Extinctions and Rediversifications

Cited by 20 publications

References 49 publications

Dynamics of the Largest Carbon Isotope Excursion During the Early Triassic Biotic Recovery

Dynamics of the Largest Carbon Isotope Excursion During the Early Triassic Biotic Recovery

Palaeobiogeographical distribution of Smithian (Early Triassic) ammonoid faunas within the western USA basin and its controlling parameters

Geological duration of ammonoids controlled their geographical range of fossil distribution

Contact Info

Product

Resources

About