Discovery of an earliest Triassic, post-extinction foraminiferal assemblage above the Permian-Triassic boundary, Strandzha nappes, northwest Turkey.

Okuyucu, Cengız; Ivanova, Daria; Bedi, Yavuz; Ergen, Ali

doi:10.7306/gq.1145

Cited by 1 publication

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“…Subsequently, this species was reported world wide, e.g. the Albarracín Formation (Anisian) of Spain (Horwitz & Pidgeon, 1993), the Olenekian and Anisian strata of the Karst Dinarides (Velić, 2007), and the Lower Triassic Tütünlüktepe Formation of NW Turkey (Okuyucu et al 2014). In this study, a large number of Arenovidalina chialingchiangensis specimens appeared suddenly in some Lower Triassic beds from South China, i.e.…”

Section: Disaster and Opportunistic Foraminifersmentioning

confidence: 99%

Early Triassic disaster and opportunistic foraminifers in South China

et al. 2015

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Survival and recovery are important dynamic processes of biotic evolution 15 during major geological transitions. Disaster and opportunistic taxa are two significant 16 groups that dominate the ecosystem in the aftermath of mass extinction events. Disaster 17 taxa appear immediately after such crises whilst opportunists predate the crisis but also 18 bloom in the aftermath. This paper documents three disaster foraminiferal species and 19 seven opportunistic foraminiferal species from Lower Triassic successions of South China. 20They are characterized by extreme high-abundance and low-diversity and occurred 21 occasionally in the Griesbachian, Smithian, and Spathian. The characteristics (small size, 22 simple morphology) and stratigraphic ranges of these groups suggest that r-selection is a 23 commonly used strategy for survivors to cope with either harsh post-extinction conditions 24 and/or environments lacking incumbents. 25

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Section: Disaster and Opportunistic Foraminifersmentioning

confidence: 99%