Anisian (Middle Triassic) marine ichnocoenoses from the eastern and western margins of the Kamdian Continent, Yunnan Province, SW China: Implications for the Triassic biotic recovery

Feng, Xueqian; Chen, Zhong‐Qiang; Woods, Adam D.; Pei, Yu; Wu, Siqi; Fang, Yuheng; Luo, Mao; Xu, Yonghang

doi:10.1016/j.gloplacha.2017.09.004

Cited by 16 publications

(5 citation statements)

References 53 publications

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“…The highly fossiliferous, dark micritic limestone of the upper part of Member II can be traced over an area of around 200 km 2 (Benton et al, 2013). Member I and the lower-middle parts of Member II of the Guanling Formation record similar successions over the entire Yangtze Platform interior region in the Yunnan-Guizhou border areas (Enos et al, 2006;Feng et al, 2017bFeng et al, , 2017c.…”

Section: Geological Setting and Stratigraphymentioning

confidence: 97%

“…Rhizocorallium and Thalassinoides), suggests a recovery stage 4 (sensu Twitchett, 2006;Pietsch and Bottjer, 2014), thus indicating a full recovery of trace makers in subtidal environments. Ichnological records from adjacent regions also support an obvious recovery of trace makers (Feng et al, 2017c). In contrast, ichnological parameters from regional ichnoassemblages of Lower Triassic successions typically suggest a recovery stage of one and two, with a few data suggesting some recovery until the latest Smithian and Spathian (Twitchett, 1999;Chen et al, 2011;Zhao et al, 2015;Luo et al, 2016;Feng et al, 2017a).…”

Section: Implications For Ichnofaunal Recovery During the Early Triassicmentioning

confidence: 99%

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Early Middle Triassic trace fossils from the Luoping Biota, southwestern China: Evidence of recovery from mass extinction

Luo

Shi

et al. 2019

Palaeogeography, Palaeoclimatology, Palaeoecology

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Trace fossils have proven useful for studying the timing and process of biotic recovery after the Permian-Triassic Mass Extinction (PTME). Recovery stages are defined by comparing successive ichnoassemblages from the latest Permian to the early Middle Triassic. Lower Triassic trace fossils have been explored in some detail, but those of the lower Middle Triassic are less well known. Here, well-preserved fossil materials from the Luoping Biota from Yunnan Province, South China suggest that a fully recovered shallow marine ecosystem was re-established by the early Middle Triassic. Trace fossil assemblages of the Luoping Biota are characterized by high ichnodiversity, with 14 ichnogenera in the shallow marine 2 environment of an intra-carbonate platform basin, and nine ichnogenera in the subtidal environment. Such moderate to high ichnodiversity, together with a marked increase in burrow sizes and the common occurrence of key ichnotaxa (e.g. Rhizocorallium and Thalassinoides) suggest that the ichnofauna had reached recovery stage four. In contrast, non turbiditic strata of the offshore setting record only three ichnogenera, with bioturbation indices never exceeding one. Periodic anoxia in bottom waters was presumably the main control for such a protracted trace fossil recovery in an offshore setting, which otherwise aided the fine preservation of body fossils of the Luoping Biota. Furthermore, event sedimentation (turbidite deposits) in the offshore setting incorporates moderate ichnodiversity and moderate to high bioturbation indices, both interpreted as a result of short-term colonization by transported infaunal animals from proximal settings. The occurrence of variable crustacean traces (e.g. Sinusichnus, Spongeliomorpha, and Thalassinoides) at Luoping and the locomotion traces of marine reptiles, together with abundant fishes and fossil decapods, highlights the value of trace fossils in ecosystem reconstruction after the PTME.

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Section: Geological Setting and Stratigraphymentioning

confidence: 97%

Section: Implications For Ichnofaunal Recovery During the Early Triassicmentioning

confidence: 99%

Early Middle Triassic trace fossils from the Luoping Biota, southwestern China: Evidence of recovery from mass extinction

Luo

Shi

et al. 2019

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…Planolites is commonly interpreted as feeding structures (fodinichnia) probably produced by deposit‐feeding vermiform organisms (Chen et al, 2012; Keighley & Pickerill, 1995; Uchman, 2007). In addition, this ichnogenus is a facies‐crossing ichnotaxon, occurring in a variety of environments (e.g., Ding, Liu, Liu, & Chen, 2020; Feng, Chen, Woods, & Fang, 2017a; Feng, Chen, Woods, Pei, et al, 2017b; Zhang, Buatois, Mángano, Qi, & Tai, 2019).…”

Section: Synopsis Of Trace Fossilsmentioning

confidence: 99%

“…Thus, Thalassinoides is commonly interpreted as a dwelling and feeding structure, mostly made by crustaceans (Chen et al, 2012; Rodríguez‐Tovar, Miguez‐Salas, & Duarte, 2017; Swinbanks & Luternauer, 1987). Thalassinoides is also a facies‐crossing trace, ranging from shallow‐ to deep‐water environments (Chen et al, 2012, 2014, 2015; Chen, Tong, & Fraiser, 2011; Feng, Chen, Woods, & Fang, 2017a; Feng, Chen, Woods, Pei, et al, 2017b; Feng et al, 2019, 2021; Myrow, 1995; Wang et al, 2019; Zhang et al, 2017).…”

Section: Synopsis Of Trace Fossilsmentioning

confidence: 99%

Trace fossils from the Permian Lopingian Talung Formation at the northern Penglaitan section of Laibin area, South China: Ichnology, palaeoenvironment, and palaeoecology

Ding

Duan

et al. 2021

Geological Journal

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The end-Permian mass extinction was the largest biotic crisis in the Phanerozoic. Previous studies of this catastrophe have mainly concentrated on geochemistry or body fossil records. The Changhsingian Talung Formation strata exposed in the Penglaitan section, the Global Stratotype Section and Point for the GuadalupianÀLopingian boundary in Laibin, South China, yield abundant trace fossils that have not been systematically described yet. Herein, we report abundant ichnotaxa from the Talung Formation, including 12 ichnospecies in 10 ichnogenera: Didymaulichnus isp., Helicorhaphe tortilis, Nereites isp., Palaeophycus isp., Planolites beverleyensis, Planolites montanus, Protovirgularia dichotoma, Protovirgularia longespicata, Rusophycus isp., Skolithos linearis, Thalassinoides isp., and Treptichnus isp. They can be assigned to two ichnoassemblages: the NereitesÀPlanolites (beds 18-45) and ProtovirgulariaÀSkolithos (beds 46-59) ichnoassemblages. Ichnological and sedimentological features indicate that the former ichnoassemblage was probably developed in a deep-marine turbidite setting, while the latter ichnoassemblage represents an ichnofossil record from a shallow marine environment, that is, subtidal to supratidal zones. In addition, the continuous ichnological records spanning from the Wuchiapingian to Changhsingian, together with facies features show a distinct regression, and they also indicate that diverse trace makers, such as arthropods, bivalves, and worms may have inhabited the Lopingian ocean, with no sign of the long-term environmental deterioration in the studied area.

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“…Trace fossils were first applied to the analysis of the causes of the end‐Cretaceous mass extinction (Savrda, 1993). Subsequently, more and more ichnologists employed the marine ichnological records across the EPME to assess the pattern of marine ecosystems (Beatty et al, 2008; Cao & Zheng, 2009; Chen et al, 2011, 2012, 2015; Cribb & Bottjer, 2020; Dineen et al, 2019; Feng et al, 2018, 2022; Feng, Chen, Benton, et al, 2019; Feng, Chen, Bottjer, et al, 2019; Feng, Chen, Woods, & Fang, 2017; Feng, Chen, Woods, Wu, et al, 2017; Guo et al, 2019; Hofmann et al, 2015; Knaust, 2010; Luo et al, 2016, 2017, 2019, 2020, 2021; Pietsch & Bottjer, 2014; Rodríguez‐Tovar & Uchman, 2006; Savrda, 2018; Shi et al, 2015, 2019; Twitchett, 2006; Zhang et al, 2018; Zonneveld et al, 2010) through analysing different ichnological parameters (e.g., bioturbation index, abundance, ichnodiversity, burrow sizes, tiering level). However, understanding the variation of terrestrial trace‐making animals is far behind the marine records around the EPME (Hasiotis, 2002).…”

Section: Introductionmentioning

confidence: 99%

The variations of terrestrial trace fossils and sedimentary substrates after the end‐Permian extinction in the Dengfeng area, North China

Zheng

Wan

et al. 2022

Geological Journal

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Evolution of terrestrial infauna in the Early Triassic enables to understand terrestrial biotic recovery after the end-Permian mass extinction (EPME). Six ichnospecies in two ichnogenera, including Skolithos linearis, S. verticalis, S. annulatus, S. isp., Planolites montanus, and P. beverleyensis, were recognized from the Lower Triassic Liujiagou Formation (Induan Stage) and Heshanggou Formation (Olenekian Stage) in the Baiping section of the Dengfeng area, North China. The ichno-ecological analyses of ichno-taxonomic abundance, ichnodiversity, bioturbation index, burrow size, and tiering level revealed that terrestrial infauna expanded from epibenthic to endobenthic through the Early Triassic. The tiering deepening suggested that tracemakers gradually began to excavate into the sediments instead of moving on the microbial mats, indicating that the burrowing capability of trace-making animals has recovered in the Olenekian. Four types of sedimentary substrates were summarized: non-bioturbated matground, matground with bioturbated patches, weakly bioturbated mixed ground, and moderately bioturbated mixed ground. Occurrence of the substrate of mixed ground may be a sign of the initial recovery of the terrestrial ecosystem after the EPME.

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Anisian (Middle Triassic) marine ichnocoenoses from the eastern and western margins of the Kamdian Continent, Yunnan Province, SW China: Implications for the Triassic biotic recovery

Cited by 16 publications

References 53 publications

Early Middle Triassic trace fossils from the Luoping Biota, southwestern China: Evidence of recovery from mass extinction

Early Middle Triassic trace fossils from the Luoping Biota, southwestern China: Evidence of recovery from mass extinction

Trace fossils from the Permian Lopingian Talung Formation at the northern Penglaitan section of Laibin area, South China: Ichnology, palaeoenvironment, and palaeoecology

The variations of terrestrial trace fossils and sedimentary substrates after the end‐Permian extinction in the Dengfeng area, North China

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