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first report of the bivalve placuna placenta (linnaeus, 1758) from the late miocene–early pliocene strata of the minab region and qeshm island, persian gulf, southern iran: palaeoecology, systematic and taphonomy
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نویسنده
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mahdipour fereshteh ,bahrami ali ,yazdi mehdi ,vaziri-moghaddam hossein ,bitner aleksandra ,vega francisco
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منبع
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پژوهش هاي چينه نگاري و رسوب شناسي - 2024 - دوره : 40 - شماره : 4 - صفحه:41 -62
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چکیده
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The late miocene–early pliocene bivalve placuna placenta (linnaeus 1758) is reported for the first time from southern iran. the shells of this species are extremely thin and fragile, and mostly disarticulated in our material, affected by compression, bioerosion, encrustation, and abrasion. in the qeshm island, midlate miocene samples from rahgostar were collected from marly deposits of the guri member of the mishan formation, zagros basin. in the minab region, samples from bandzark were collected from miocenepliocene sandstones of the tiab anticline in the makran basin. the studied species and their taphonomic features revealed tidal/intertidal shallow marine environment with high productivity, high rate of sedimentation, and rapid burial processes in low energy and high environmental stress, caused by strongly reduced salinity. specimens of both assemblages affected by reworking processes, are represented by the following ichnospecies: maeandropolydora sulcans, oichnus simplex, and trypanites weisei.
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کلیدواژه
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placuna placenta ,placunidae ,taphonomy ,paleoecology ,qeshm island ,iran
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آدرس
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university of isfahan, faculty of sciences, department of geology, iran, university of isfahan, faculty of sciences, department of geology, iran, university of isfahan, faculty of sciences, department of geology, iran, university of isfahan, faculty of sciences, department of geology, iran, polish academy of sciences, institute of paleobiology, poland, universidad nacional autónoma de méxico, instituto de geología, mexico
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پست الکترونیکی
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vegver@unam.mx
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first report of the bivalve placuna placenta (linnaeus, 1758) from the late miocene–early pliocene strata of the minab region and qeshm island, persian gulf, southern iran: palaeoecology, systematic and taphonomy
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Authors
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mahdipour fereshteh ,bahrami ali ,yazdi mehdi ,vaziri-moghaddam hossein ,bitner aleksandra ,vega francisco
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Abstract
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the late miocene–early pliocene bivalve placuna placenta (linnaeus 1758) is reported for the first time from southern iran. the shells of this species are extremely thin and fragile, and mostly disarticulated in our material, affected by compression, bioerosion, encrustation, and abrasion. in the qeshm island, midlate miocene samples from rahgostar were collected from marly deposits of the guri member of the mishan formation, zagros basin. in the minab region, samples from bandzark were collected from miocenepliocene sandstones of the tiab anticline in the makran basin. the studied species and their taphonomic features revealed tidal/intertidal shallow marine environment with high productivity, high rate of sedimentation, and rapid burial processes in low energy and high environmental stress, caused by strongly reduced salinity. specimens of both assemblages affected by reworking processes, are represented by the following ichnospecies: maeandropolydora sulcans, oichnus simplex, and trypanites weisei.
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Keywords
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placuna placenta ,placunidae ,taphonomy ,paleoecology ,qeshm island ,iran
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