Taphonomy of a Panopea Menard de la Groye, 1807 shell bed from the Pisco Formation (Miocene, Peru)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F21%3A10135715" target="_blank" >RIV/00023272:_____/21:10135715 - isvavai.cz</a>
Result on the web
<a href="https://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/20/8" target="_blank" >https://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/20/8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5852/cr-palevol2021v20a8" target="_blank" >10.5852/cr-palevol2021v20a8</a>
Alternative languages
Result language
angličtina
Original language name
Taphonomy of a Panopea Menard de la Groye, 1807 shell bed from the Pisco Formation (Miocene, Peru)
Original language description
Invertebrate taphonomy can provide significant information about the post-mortem processes that affected the fossil record. In the East Pisco Basin of southern Peru, a Panopea Menard de la Groye, 1807 shell bed was found in the upper Miocene strata of the Pisco Formation, hinting at a peculiar biostratinomic and diagenetic history. This bed contains abundant invertebrate fossil molds cemented by dolomite. The specimens of the deep infaunal bivalve, Panopea sp., occur together with bivalves representative of shallow infaunal species (Trachycardium sp. and Dosinia ponderosa [Gray, 1838]) and balanid barnacles, which are sessile encrusters. The Panopea specimens host compound molds evidencing an abundant encrusting fauna, including serpulids, ?foraminifera, bryozoans, and barnacles that colonized the inner surfaces of the valves before their final burial. We hypothesize that short-term, storm-related processes exhumed the living bivalves, resulting in a sedimentological concentration of relatively well-preserved shells. After the death of the exhumed bivalves, the inner surfaces of the articulated Panopea shells, representing hard-substratal, sheltered environments on an otherwise unstable sandy seafloor (i.e., "benthic islands"), were colonized by different encrusting organisms. Following the final burial, dolomite precipitated, cementing the sediment infill of the valves. Lastly, a decrease of pH occurred at the sulfate reduction-methanogenesis boundary, inducing the dissolution of the shell carbonate.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10506 - Paleontology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Comptes Rendus - Palevol
ISSN
1631-0683
e-ISSN
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Volume of the periodical
20
Issue of the periodical within the volume
8
Country of publishing house
FR - FRANCE
Number of pages
22
Pages from-to
119-140
UT code for WoS article
000624593300001
EID of the result in the Scopus database
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