Reworked Miospores in the Upper Paleozoic and Lower Triassic of the Northern Circum-Polar Area and Selected Localities

Utting, J.; Spina, Amalia; Jansonius, Jan; McGregor, D C; Marshall, J.

doi:10.2113/28.1.75

Cited by 16 publications

(7 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The record of Early Triassic plant macrofossils is extremely poor and mostly uncalibrated; however, palynological records adequately reflect floral changes during mass extinctions and the subsequent recovery phases 22 23 25 . For the PTME some spectacular scenarios have been inferred from relatively few records, e.g., total extinction 50 totally devastated environments unsuited for plants 12 49 51 52 , plant mutagenesis due to ozone layer destruction 10 , and collapse of terrestrial ecosystems related to a fungal event 49 52 . Evidence for the latter event is still questionable, mainly because of the ambiguous biological attribution of Reduviasporonites , the key witness of this event, assigned by some authors to fungi 53 and by others-with more convincing evidence-to algae 54 55 .…”

Section: Discussionmentioning

confidence: 99%

Severest crisis overlooked—Worst disruption of terrestrial environments postdates the Permian–Triassic mass extinction

Hochuli

Sanson-Barrera

Schneebeli‐Hermann

et al. 2016

Sci Rep

View full text Add to dashboard Cite

Generally Early Triassic floras are believed to be depauperate, suffering from protracted recovery following the Permian–Triassic extinction event. Here we present palynological data of an expanded East Greenland section documenting recovered floras in the basal Triassic (Griesbachian) and a subsequent fundamental floral turnover, postdating the Permian–Triassic boundary extinction by about 500 kyrs. This event is marked by a swap in dominating floral elements, changing from gymnosperm pollen-dominated associations in the Griesbachian to lycopsid spore-dominated assemblages in the Dienerian. This turnover coincides with an extreme δ13Corg negative shift revealing a severe environmental crisis, probably induced by volcanic outbursts of the Siberian Traps, accompanied by a climatic turnover, changing from cool and dry in the Griesbachian to hot and humid in the Dienerian. Estimates of sedimentation rates suggest that this environmental alteration took place within some 1000 years. Similar, coeval changes documented on the North Indian Margin (Pakistan) and the Bowen Basin (Australia) indicate the global extent of this crisis. Our results evidence the first profound disruption of the recovery of terrestrial environments about 500kyrs after the Permian–Triassic extinction event. It was followed by another crisis, about 1myrs later thus, the Early Triassic can be characterised as a time of successive environmental crises.

show abstract

Section: Discussionmentioning

confidence: 99%

Severest crisis overlooked—Worst disruption of terrestrial environments postdates the Permian–Triassic mass extinction

Hochuli

Sanson-Barrera

Schneebeli‐Hermann

et al. 2016

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Chen et al, 2011), the impact of the mass extinction on continental vegetation remains poorly resolved (e.g. Knoll, 1984;Rees et al, 2002;Bamford, 2004;Utting et al, 2004;Hochuli et al, 2010;Xiong and Wang, 2011).…”

Section: Introductionmentioning

confidence: 99%

Vegetation history across the Permian–Triassic boundary in Pakistan (Amb section, Salt Range)

et al. 2015

View full text Add to dashboard Cite

“…The occurrence of several very similar pollen grains of Lueckisporites close to the edge of the amber in a threedimensional state excludes a previous notion that similar grains found dispersed in the sediment could be reworked from the Permian (Balme, 1979;Utting, 2004). Pollen grains of the Lueckisporites-type were only found in situ in Permian Majonicaceae conifer cones so far (e.g., Clement-Westerhof, 1974).…”

Section: Ambermentioning

confidence: 79%

An Exceptionally Preserved Terrestrial Record of LIP Effects on Plants in the Carnian (Upper Triassic) Amber-Bearing Section of the Dolomites, Italy

et al. 2022

View full text Add to dashboard Cite

The Carnian Pluvial Episode (CPE) has been recognized as a time of plant radiations and originations, likely related to observed swift changes from xerophytic to more hygrophytic floras. This suggests that the increasing humidity causally resulting from LIP volcanism was the trigger for these changes in the terrestrial realm. Understanding the cause and effects of the CPE on the plant realm, requires study of well-preserved floras that are precisely aligned with the CPE. We therefore focus on the best age-constrained section within the CPE for the terrestrial to marginal marine environment to understand the floristic composition at the early CPE. This is found in the Dolomites, Italy, and is remarkable for the preservation of the oldest fossiliferous amber found in the rock record. An integrated study of palynomorphs and macro-remains related to the conifer families of the fossil resin bearing level brings together the floral components from this section. This observed mixture of different taxa of extinct and modern conifer families underlines firmly the effects of the LIP-induced CPE on the evolution and radiation of conifers.

show abstract

Reworked Miospores in the Upper Paleozoic and Lower Triassic of the Northern Circum-Polar Area and Selected Localities

Cited by 16 publications

References 96 publications

Severest crisis overlooked—Worst disruption of terrestrial environments postdates the Permian–Triassic mass extinction

Severest crisis overlooked—Worst disruption of terrestrial environments postdates the Permian–Triassic mass extinction

Vegetation history across the Permian–Triassic boundary in Pakistan (Amb section, Salt Range)

An Exceptionally Preserved Terrestrial Record of LIP Effects on Plants in the Carnian (Upper Triassic) Amber-Bearing Section of the Dolomites, Italy

Contact Info

Product

Resources

About