Bartonian orthophragminids with new endemic species from the Pirkoh and Drazinda formations in the Sulaiman Range, Indus Basin, Pakistan

Ali, Nauman; Özcan, Ercan; Yücel, Ali Osman; Hanif, Muhammad; Hashmi, Syed Irfanullah; Ullah, Farhat; Rizwan, Muhammad; Pignatti, Johannes

doi:10.1080/09853111.2017.1419676

Cited by 13 publications

(15 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We aim to describe here in detail the orthophragminids from the Fulra Limestone to complement our findings from the Pirkoh and Drazinda formations in Pakistan (Ali et al, 2018). We make a general synthesis of Bartonian orthophragminids from the Indian subcontinent by incorporating and comparing the data from Western Tethys (Europe, north Africa and Turkey).…”

Section: Described Plankticmentioning

confidence: 99%

“…The Bartonian shallow-marine deposits are exposed in Kutch, Cambay and Jaisalmer basins in western India, in the Sulaiman and Kirthar ranges in Pakistan, and in the Assam-Meghalaya regions in eastern India. Generally referred to as 'Nummulitic limestone' , these sequences contain abundant orthophragminids that are locally more common than nummulitids (Ali et al, 2018;Özcan, Saraswati, Hanif, & Ali, 2016b;Samanta & Lahiri, 1985). Our studies on the taxonomy and paleobiogeography of orthophragminids from the Fulra Limestone and Sulaiman Range in Pakistan revealed a significant number of new species that appear to be confined to Indian subcontinent (Ali et al, 2018;Özcan et al, 2016b).…”

Section: Introductionmentioning

confidence: 99%

“…Generally referred to as 'Nummulitic limestone' , these sequences contain abundant orthophragminids that are locally more common than nummulitids (Ali et al, 2018;Özcan, Saraswati, Hanif, & Ali, 2016b;Samanta & Lahiri, 1985). Our studies on the taxonomy and paleobiogeography of orthophragminids from the Fulra Limestone and Sulaiman Range in Pakistan revealed a significant number of new species that appear to be confined to Indian subcontinent (Ali et al, 2018;Özcan et al, 2016b). This suggests a major faunal differentiation between peri-Mediterranean/Europe region (Western Tethys) and Indian subcontinent (Eastern Tethys) in the middle Eocene.…”

Section: Introductionmentioning

confidence: 99%

“…As opposed to Western Tethyan orthophragminid assemblages, Discocyclina, along with subordinate Asterocyclina, is the most common group in Fulra Limestone, whereas Orbitoclypeus is represented by a single species, O. haynesi. Pirkoh and Drazinda formations from Pakistan yielded predominantly Discocyclina consisting of some new species including Discocyclina pseudodispansa Özcan, Ali & Yücel, 2018, D. sulaimanensis Özcan, Ali & Hanif, 2016, D. rakhinalaensis Özcan, Ali & Yücel, 2018, D. zindapirensis Özcan, Ali & Yücel, 2018, and D. kutchensis Özcan & Saraswati, 2016, the latter one occurring also in the Fulra Limestone (Ali et al, 2018;Özcan et al, 2016b). A new morphological structure, bulges, observed at the test surface as semi-rounded to rounded thickening of the lateral layers, in D. kutchensis was introduced (Özcan et al, 2016b).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Bartonian orthophragminids from the Fulra Limestone (Kutch, W India) and coeval units in Sulaiman Range, Pakistan: a synthesis of shallow benthic zone (SBZ) 17 for the Indian Subcontinent

et al. 2018

Self Cite

View full text Add to dashboard Cite

Orthophragminids from the Bartonian Fulra Limestone in Kutch, India and the coeval units in Sulaiman Range in Pakistan suggest the establishment of a significant number of endemic species in the Indian subcontinent (Eastern Tethys). Among a total of fifteen species of Discocyclina, Orbitoclypeus and Asterocyclina, six of them appear to be confined to Indian subcontinent while seven species are common both to the peri-Mediterranean/Europe region (Western Tethys) and Indian subcontinent. Two species, Asterocyclina sireli, a four-ribbed species of possibly Indo-Pacific origin, and Orbitoclypeus haynesi that form large populations in Fulra Limestone, appear to have spread into North Africa and Turkey but not into European platforms as a response to Middle Eocene Climatic Optimum (MECO). The lack of Lutetian and Priabonian fauna in the studied sections, either due to a hiatus or unsuitable depositional environments, hampers the establishment of the actual stratigraphic ranges of the identified taxa. Our record provides us to characterize the orthophragminids in shallow benthic zone (SBZ) 17 for Eastern Tethys in detail by comparing the data from the above localities with those from the North Africa, Europe and Turkey, showing the change in diversity.

show abstract

Section: Described Plankticmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bartonian orthophragminids from the Fulra Limestone (Kutch, W India) and coeval units in Sulaiman Range, Pakistan: a synthesis of shallow benthic zone (SBZ) 17 for the Indian Subcontinent

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…The middle-upper Eocene shallow-marine deposits in the Tethys contain LBF mainly represented by nummulitids, orthophragminids, alveolinids and rotaliids (Schaub 1981;Racey 1995;Serra-Kiel et al 1998, 2003Özcan et al 2010;Less and Özcan 2012;Hottinger 2014;Ali et al 2018 and references therein). The dominant middle Eocene foraminiferal taxa belong to large (giant) Nummulites, various species of Assilina, Operculina, alveolinids and orthophragminids.…”

Section: The Bartonian-priabonian Lbf Record In the Tethys: A Synthesismentioning

confidence: 99%

Integrated biostratigraphy of the middle to upper Eocene Kırkgeçit Formation (Baskil section, Elazığ, eastern Turkey): larger benthic foraminiferal perspective

et al. 2019

Self Cite

View full text Add to dashboard Cite

The Baskil section, located to the west of Elazığ in eastern Turkey, represents deep-marine facies of the Eocene Kırkgeçit Formation, deposited in a wide spectrum of environmental conditions ranging from shelf to basin. The 390-m-thick sequence was deposited at bathyal depths in the Tethys, at the edge of the subsiding Anatolide-Tauride plate and is highly promising for an integrated study of Bartonian to earliest Priabonian mid-latitude neritic and deep-marine biota. The section contains numerous allochthonous limestone beds, characterized either by turbidites or debris flows with resedimented larger benthic foraminifera (LBF). The section spans the planktonic foraminiferal Zones E10/11 to E14, the calcareous nannofossil zones NP15-NP18, shallow benthic zones (SBZ) SBZ16/17 to SBZ18A, including orthophragminid (OZ) zones OZ12-OZ14. The Bartonian-Priabonian boundary is placed at NP17/18 boundary by the lowest occurrence of Chiasmolithus oamaruensis, which lies within Subchron C17n.1n and Zone SBZ18A. The LBF, obtained as loose specimens from 17 turbiditic and debris flow beds, are characterized predominantly by 21 orthophragminid lineages and 13 nummulitid species as well as some other stratigraphically diagnostic genera. Most of the orthophragminid lineages straddle the Bartonian-Priabonian boundary, whereas Orbitoclypeus douvillei and Discocyclina pulcra appear to be the only orthophragminids confined to SBZ17 at its upper range. The Nummulites fabianii-lineage first appearing in zones E12 and NP16 in the Bartonian shows a well-documented evolution of the embryon, and is referred to Nummulites garganicus in the Bartonian, whereas its successor Nummulites hormoensis straddles the Bartonian/Priabonian boundary. The first appearances of N. hormoensis and Heterostegina armenica as well as the last occurrences of Nummulites ptukhiani and Assilina exponens in the section are almost coeval and are utilized to mark SBZ17-18 boundary. The first appearance of the H. armenica-lineage is recorded in zones E14 and upper part of NP17. Two important species, Chapmanina gassinensis and Silvestriella tetraedra, have been first recorded in SBZ18A just above the Bartonian-Priabonian boundary. Thus, the transition of N. garganicus to N. hormoensis, the first appearances of H. armenica, C. gassinensis and S. tetraedra as well as the last occurrences of N. ptukhiani, Assilina exponens, Discocyclina pulcra and Orbitoclypeus douvillei, all across the SBZ17-18 boundary or within the SBZ18A, appear to be the most useful bioevents in the transition from the Bartonian to the Priabonian in shallow-marine realms.

show abstract

Evolution, Extinction, Homology and Homoplasy of the Larger Benthic Foraminifera from the Carboniferous to the Present Day, as Exemplified by Planispiral-Fusiform and Discoidal Forms

BouDagher‐Fadel

2022

J. Earth Sci.

View full text Add to dashboard Cite

Examples of evolution, extinction and homoplasy of the larger benthic foraminifera (LBF) occur throughout their history. Since the Carboniferous, LBF have thrived in carbonate-rich tropical and subtropical shallow-marine shelf environments. Their high abundance and diversity are due primarily to their extraordinary ability to inhabit a range of ecological niches and by hosting a variety of symbionts. Attaining relatively large, centimeter-scale sizes, made some forms very specialized and vulnerable to rapid ecological changes. For this reason, some LBF have shown a tendency to suffer periodically during major extinctions, especially when environmental conditions have changed rapidly and/or substantially. This, however, makes them valuable biostratigraphic microfossils and, in addition, gives invaluable insight into the spatial and temporal process of biological evolution, such as convergent/homoplasy and homology/iterative evolution. Here the evolutionary behavior of two important morphological types that occurred throughout the history of the LBF are discussed, namely the planispiral-fusiform test as typified by the fusulinids in the Late Paleozoic and the alveolinids in the mid-Cretaceous and Neogene, and the three-layered discoid lenticular test as characterized by the orbitoids in the mid-to Late Cretaceous, the orthophragminids in the Paleogene, and lepidocyclinids in the Oligocene to Quaternary. Understanding the propensity of these forms to convergent and iterative evolution, with the repeated re-occurrence of certain morphological features, is essential in understanding and constructing their phylogenetic relationships more generally within the main groups of the LBF. The insights gained from the history of these LBF have wider implications, and provide a more general understanding of the impacts of climate and ecological changes as driving forces for biological evolution.

show abstract

Bartonian orthophragminids with new endemic species from the Pirkoh and Drazinda formations in the Sulaiman Range, Indus Basin, Pakistan

Cited by 13 publications

References 23 publications

Bartonian orthophragminids from the Fulra Limestone (Kutch, W India) and coeval units in Sulaiman Range, Pakistan: a synthesis of shallow benthic zone (SBZ) 17 for the Indian Subcontinent

Bartonian orthophragminids from the Fulra Limestone (Kutch, W India) and coeval units in Sulaiman Range, Pakistan: a synthesis of shallow benthic zone (SBZ) 17 for the Indian Subcontinent

Integrated biostratigraphy of the middle to upper Eocene Kırkgeçit Formation (Baskil section, Elazığ, eastern Turkey): larger benthic foraminiferal perspective

Evolution, Extinction, Homology and Homoplasy of the Larger Benthic Foraminifera from the Carboniferous to the Present Day, as Exemplified by Planispiral-Fusiform and Discoidal Forms

Contact Info

Product

Resources

About