Farid Saleh

Farid Saleh
Yunnan University · Institute of Palaeontology

PhD
Postdoc investigating the preservation of the Chengjiang Biota (sedimentology and taphonomic biases)

About

27
Publications
11,100
Reads
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199
Citations
Citations since 2017
27 Research Items
199 Citations
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2017201820192020202120222023020406080
2017201820192020202120222023020406080
Education
October 2017 - July 2020
Claude Bernard University Lyon 1
Field of study
  • Earth Sciences, Taphonomy/Paleoecology
September 2015 - June 2017
Ecole normale supérieure de Lyon
Field of study
  • Earth sciences
October 2012 - July 2015
Lebanese University
Field of study
  • Life and Earth sciences

Publications

Publications (27)
Article
Exceptional fossil preservation is defined by the preservation of soft to lightly sclerotized organic tissues. The two most abundant types of soft-tissue preservation are carbonaceous compressions and replicates in authigenic minerals. In the geological record, exceptionally preserved soft fossils are rare and generally limited to only a few strati...
Article
It is hypothesized that iron from biological tissues, liberated during decay, may have played a role in inhibiting loss of anatomical information during fossilization of extinct organisms. Most tissues in the animal kingdom contain iron in different forms. A widely distributed iron-bearing molecule is ferritin, a globular protein that contains iron...
Article
The Fezouata Biota in Morocco is the only Lower Ordovician Lagerstätte yielding a biologically diverse assemblage in a fully marine environment, whilst also containing organisms typical of Cambrian Burgess Shale-type (BST) ecosystems. Fossils from the Fezouata Shale share the same mode of preservation as Cambrian BST biotas defined by carbonaceous...
Article
Understanding the functioning of extinct ecosystems is a complicated knot of ecological, evolutionary, and preservational strands that must be untangled. For instance, anatomical and behavioral differences can profoundly alter fossilization pathways. This is particularly true in exceptionally preserved soft-bodied biotas that record the earliest ph...
Article
Full-text available
The Fezouata Biota (Morocco) is a unique Early Ordovician fossil assemblage. The discovery of this biota revolutionized our understanding of Earth’s early animal diversifications—the Cambrian Explosion and the Ordovician Radiation—by suggesting an evolutionary continuum between both events. Herein, we describe Taichoute, a new fossil locality from...
Article
Full-text available
The Chengjiang biota (Yunnan Province, China) is a treasure trove of soft-bodied animal fossils from the earliest stages of the Cambrian explosion. The mechanisms contributing to its unique preservation, known as the Burgess Shale-type preservation, are well understood. However, little is known about the preservation differences between various ani...
Article
The Fezouata Shale in Morocco is the most diverse Lower Ordovician unit yielding soft-tissue preservation. Iron played a crucial role in the preservation of soft parts in this formation through the damage of bacterial membranes under oxic conditions and the pyritization of soft parts under the activity of bacterial sulfate reduction. However, the o...
Article
Full-text available
The Chengjiang Biota is the earliest Phanerozoic soft-bodied fossil assemblage offering the most complete snapshot of Earth's initial diversification, the Cambrian Explosion. Although palaeobiologic aspects of this biota are well understood, the precise sedimentary environment inhabited by this biota remains debated. Herein, we examine a non-weathe...
Article
Full-text available
The Early Ordovician is a key interval for our understanding of the evolution of life on Earth as it lays at the transition between the Cambrian Explosion and the Ordovician Radiation and because the fossil record of the late Cambrian is scarce. In this study, assembly processes of Early Ordovician trilobite and echinoderm communities from the Cent...
Preprint
Full-text available
The Fezouata Biota (Morocco) is an exceptionally well-preserved fossil community of Early Ordovician age and although its oldest units are comparable with Burgess Shale-type localities of the Cambrian Explosion, little attention has been paid to the younger units despite potential to reveal the conditions of the Ordovician Radiation. Herein, we des...
Article
Understanding variations in body size is essential for deciphering the response of an organism to its surrounding environmental conditions and its ecological adaptations. In modern environments, large marine animals are mostly found in cold waters. However, numerous parameters can influence body-size variations other than temperatures, such as oxyg...
Article
The Fezouata Shale in Morocco is the only Lower Ordovician Lagerstätte to yield a diverse exceptionally preserved marine fauna. Sediments of this formation have yielded soft to lightly sclerotized taxa that were previously unknown from the Ordovician. Yet the taphonomic pathway of fossils from this formation remains poorly understood. Here, based o...
Article
Investigation of the Fezouata Shale has added to our knowledge on the initial diversification of metazoans. These Lower Ordovician deposits yielded abundant and diverse remains of cuticularized to lightly sclerotized organisms, in addition to numerous soft tissues. Described fossilized soft parts recovered from the Fezouata Shale belong mainly to a...
Article
The extinct echinoderm clade Stylophora consists of some of the strangest known deuterostomes. Stylophorans are known from complete, fully articulated skeletal remains from the middle Cambrian to the Pennsylvanian, but remain difficult to interpret. Their bizarre morphology, with a single appendage extending from a main body, has spawned vigorous d...
Article
Full-text available
In the Central Anti-Atlas (Morocco), the lower part of the Fezouata Shale has yielded locally abundant remains of soft-bodied to lightly sclerotized taxa, occurring in low diversity assemblages characterized by strong spatial and taxonomic heterogeneities, and frequently, by the occurrence of small-sized individuals. Size frequency analyses of Celd...
Presentation
Full-text available
Exceptional preservation consists of the preservation of soft to lightly sclerotised organic tissues (e.g. feathers, guts, skins) in the geological record. The transfer of such tissues from the biosphere to the lithosphere is the result of a succession of multiple, complex biological and geological mechanisms. These processes regroup mainly burial,...
Presentation
Exceptional preservation consists of the preservation of soft to lightly sclerotised organic tissues (e.g. feathers, guts, skins) in the geological record. Although the Palaeozoic record of such exceptionally preserved soft-parts in echinoderms is extremely scarce, it represents a unique source of information on the internal anatomy of fossil taxa,...

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Projects

Project (1)
Project
The main aim of this project is to discover how and why soft tissues are preserved in the Fezouata Shale. Geochemical, sedimentological, and mineralogical investigations are being made on fresh core material and outcrop sediments to understand the taphonomic pathway of soft parts in this formation. At the same time, a paleontological study is in progress to see if a specific bias, towards certain biological “tissues”, exists in these deposits. The final aim of this project is to develop a predictive approach for the discovery of exceptional preservation.