Intense Naticid Drilling Predation on Turritelline Gastropods From Below the K-T Boundary at Rajahmundry, India

Mallick, Sumanta; Bardhan, Subhendu; Paul, Sandip; Mukherjee, S.; Das, Sayantani

doi:10.2110/palo.2013.p13-007r

Cited by 22 publications

(21 citation statements)

References 80 publications

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“…Previous 40 Ar/ 39 Ar dates indicated the RT are late Cretaceous to early Paleocene in age (∼63-67 Ma) (Knight et al, 2003), and paleomagnetic analyses found that flows with normal magnetic polarity overlie reversely magnetized flows (Baksi, 2001;Vandamme & Courtillot, 1992). Additionally, Danian fossils found in a carbonate sequence between the lower two flows (e.g., Baksi et al, 1994;Keller et al, 2008;Sen & Sabale, 2011), and Maastrichtian fossils in the sediments below the lowest flow (e.g., Keller et al, 2008;Mukherjee et al, 2013) suggested that the lowest flow was emplaced in the latest Cretaceous. These chronologic constraints led to the hypothesis that the lowest flow is part of an extremely voluminous Deccan eruptive episode just prior to the mass extinction and Cretaceous-Paleogene boundary (e.g., Keller et al, 2008Keller et al, , 2012Lakshminarayana et al, 2010).…”

Section: Introductionmentioning

confidence: 96%

No Cretaceous‐Paleogene Boundary in Exposed Rajahmundry Traps: A Refined Chronology of the Longest Deccan Lava Flows From⁴⁰Ar/³⁹Ar Dates, Magnetostratigraphy, and Biostratigraphy

Fendley

Sprain

Renne

et al. 2020

Geochem Geophys Geosyst

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Deccan Traps flood basalt volcanism affected ecosystems spanning the end‐Cretaceous mass extinction, with the most significant environmental effects hypothesized to be a consequence of the largest eruptions. The Rajahmundry Traps are the farthest exposures (~1,000 km) of Deccan basalt from the putative eruptive centers in the Western Ghats and hence represent some of the largest volume Deccan eruptions. Although the three subaerial Rajahmundry lava flows have been geochemically correlated to the Wai Subgroup of the Deccan Traps, poor precision associated with previous radioisotopic age constraints has prevented detailed comparison with potential climate effects. In this study, we use new 40Ar/39Ar dates, paleomagnetic and volcanological analyses, and biostratigraphic constraints for the Rajahmundry lava flows to ascertain the timing and style of their emplacement. We find that the lower and middle flows (65.92 ± 0.25 and 65.67 ± 0.08 Ma, ±1σ systematic uncertainty) were erupted within magnetochron C29r and were a part of the Ambenali Formation of the Deccan Traps. By contrast, the uppermost flow (65.27 ± 0.08 Ma) was erupted in C29n as part of the Mahabaleshwar Formation. Given these age constraints, the Rajahmundry flows were not involved in the end‐Cretaceous extinction as previously hypothesized. To determine whether the emplacement of the Rajahmundry flows could have affected global climate, we estimated their eruptive CO2 release and corresponding climate change using scalings from the LOSCAR carbon cycle model. We find that the eruptive gas emissions of these flows were insufficient to directly cause multi‐degree warming; hence, a causal relationship with significant climate warming requires additional Earth system feedbacks.

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Section: Introductionmentioning

confidence: 96%

No Cretaceous‐Paleogene Boundary in Exposed Rajahmundry Traps: A Refined Chronology of the Longest Deccan Lava Flows From⁴⁰Ar/³⁹Ar Dates, Magnetostratigraphy, and Biostratigraphy

Fendley

Sprain

Renne

et al. 2020

Geochem Geophys Geosyst

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“…The samples were collected following both bulk sampling (see Kowalewski, 2002) and random surface-sampling protocols (see Mallick et al, 2013). Eleven bulk samples were collected in four separate field trips (2012, 2013, 2014, and 2016).…”

Section: Methodsmentioning

confidence: 99%

“…The gastropod family Turritellidae is widely regarded as a monophyletic group within basal caenogastropods commonly known as “cerithioids” (Cerithioidea, sensu Strong et al, 2011; Cerithimorpha, sensu Golikov and Starobogatov, 1975; also see Lydeard et al, 2002; Ponder et al, 2008). Turritellids can be extremely abundant in assemblages in which they occur, from Lower Cretaceous to Recent (Allmon, 2007), including several fossil assemblages in India (Malarkodi et al, 2009; Mallick et al, 2013; Bardhan et al, 2014). The group has also been the subject of numerous studies of predation intensity in the fossil and Recent records (e.g., Allmon et al, 1990; Mallick et al, 2013, 2014; Paul et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Turritellids can be extremely abundant in assemblages in which they occur, from Lower Cretaceous to Recent (Allmon, 2007), including several fossil assemblages in India (Malarkodi et al, 2009; Mallick et al, 2013; Bardhan et al, 2014). The group has also been the subject of numerous studies of predation intensity in the fossil and Recent records (e.g., Allmon et al, 1990; Mallick et al, 2013, 2014; Paul et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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The oldest turritelline gastropods: from the Oxfordian (Upper Jurassic) of Kutch, India

Das¹,

Saha²,

Bardhan³

et al. 2018

J. Paleontol.

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Turritellid gastropods are important components of many Cretaceous–Recent fossil marine faunas worldwide. Their shell is morphologically simple, making homoplasy widespread and phylogenetic analysis difficult, but fossil and living species can be recognized based on shell characters. For many decades, it has been the consensus that the oldest definite representatives of Turritellidae are from the Lower Cretaceous, and that pre-Cretaceous forms are homeomorphs. Some morphological characters of the present turritelline species resemble those of mathildoids, but many diagnostic characters clearly separate these two groups. We here describe and/or redescribe—based on examination of more than 2600 near complete specimens—four species from the Upper Jurassic Dhosa Oolite Member of the Chari Formation in Kutch, western India, and demonstrate that they are members of Turritellidae, subfamily Turritellinae, on the basis of diagnostic characters including apical sculptural ontogeny (obtained from SEM study), spiral sculpture, and growth line patterns. The four species are in order of abundance, Turritella jadavpuriensis Mitra and Ghosh, 1979; Turritella amitava new species; Turritella jhuraensis Mitra and Ghosh, 1979, and Turritella dhosaensis new species. The turritelline assemblages occur only on the northeastern flank of the Jhura dome (23°24’47.57”N, 69°36’09.26”E). Age of the Dhosa Oolite has recently been confirmed based on multiple ammonite species. All these points indicate that these fossils are the oldest record of the family Turritellidae—by almost 30 million years—in the world.

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“…Again in recent years there has been a welcome expansion of horizons and new data are being published from different regions such as India (Mallick et al . , ), South America (Martinelli et al . ; Visaggi & Kelley ) and Australasia (Tuura et al .…”

Section: A Pressing Need To Expand Data Setsmentioning

confidence: 99%

Uncovering the holes and cracks: from anecdote to testable hypotheses in predation studies

Harper

2016

Palaeontology

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Biological interactions between organisms have long been believed to be very important in structuring communities and, when scaled up over geological time, in the evolution of organisms. Investigations of palaeontological evidence for predator–prey interactions have been popular pursuits, and a number of attractive hypotheses have been proposed which link increased predation pressure with a wide range of morphological and ecological changes which are apparent over the course of the Phanerozoic. In particular studies of fossil drill holes and repair scars in shelly prey have been common targets for research. However, the nature of some of our data has been rather anecdotal and restricted in range. Perhaps we should be more concerned that we are not picking up the true range of natural variability. This paper aims to highlight the sources of variability in our data and, going forward, to urge the collection of quantitative data from many more samples and (palaeo)environmental settings in order that we might properly be able to separate the intrinsic natural variability in our data from robust temporal or spatial trends.

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Intense Naticid Drilling Predation on Turritelline Gastropods From Below the K-T Boundary at Rajahmundry, India

Cited by 22 publications

References 80 publications

No Cretaceous‐Paleogene Boundary in Exposed Rajahmundry Traps: A Refined Chronology of the Longest Deccan Lava Flows From⁴⁰Ar/³⁹Ar Dates, Magnetostratigraphy, and Biostratigraphy

No Cretaceous‐Paleogene Boundary in Exposed Rajahmundry Traps: A Refined Chronology of the Longest Deccan Lava Flows From⁴⁰Ar/³⁹Ar Dates, Magnetostratigraphy, and Biostratigraphy

The oldest turritelline gastropods: from the Oxfordian (Upper Jurassic) of Kutch, India

Uncovering the holes and cracks: from anecdote to testable hypotheses in predation studies

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Intense Naticid Drilling Predation on Turritelline Gastropods From Below the K-T Boundary at Rajahmundry, India

Cited by 22 publications

References 80 publications

No Cretaceous‐Paleogene Boundary in Exposed Rajahmundry Traps: A Refined Chronology of the Longest Deccan Lava Flows From40Ar/39Ar Dates, Magnetostratigraphy, and Biostratigraphy

No Cretaceous‐Paleogene Boundary in Exposed Rajahmundry Traps: A Refined Chronology of the Longest Deccan Lava Flows From40Ar/39Ar Dates, Magnetostratigraphy, and Biostratigraphy

The oldest turritelline gastropods: from the Oxfordian (Upper Jurassic) of Kutch, India

Uncovering the holes and cracks: from anecdote to testable hypotheses in predation studies

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No Cretaceous‐Paleogene Boundary in Exposed Rajahmundry Traps: A Refined Chronology of the Longest Deccan Lava Flows From⁴⁰Ar/³⁹Ar Dates, Magnetostratigraphy, and Biostratigraphy

No Cretaceous‐Paleogene Boundary in Exposed Rajahmundry Traps: A Refined Chronology of the Longest Deccan Lava Flows From⁴⁰Ar/³⁹Ar Dates, Magnetostratigraphy, and Biostratigraphy