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2023
Journal article
Evolutionary trends in trimerellid brachiopods
Non-articulated trimerellides, one minor group among the largest brachiopods, are commonly found in massive monospecific accumulations in Ordovician and Silurian rocks. In this paper, all species of the family Trimerellidae are listed for the first time, and some of them are discussed. They appeared in the Sandbian and became extinct...Chen, Di ; Huang, Bing ; Candela, Yves
Morphospace, Trimerellids, Platform, Vault, and Cladistics
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2023
Journal article
Revision of the Llandovery (lower Silurian) trimerellide brachiopod Yidurella in South China
Although a minor group of brachiopods in the Ordovician and Silurian, the trimerellides include some of the largest known brachiopods in the Early Paleozoic. Yidurella Zeng, a monospecific genus of moderate size from the Shamao Formation of Tizikou, Yidu City, Hubei Province, was originally described as having a solid platform....Chen, Di ; Huang, Bing ; Candela, Yves
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2022
Journal article
New fossil assemblages from the Early Ordovician Fezouata Biota
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 the Fezouata Shale. This...Saleh, Farid ; Vaucher, Romain ; Vidal, Muriel ; Hariri, Khadija El ; Laibl, Lukáš …
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2021
Journal article
The Ordovician diversification of sea urchins: systematics of the Bothriocidaroida (Echinodermata: Echinoidea)
The echinoids of the order Bothriocidaroida represent the initial burst of sea urchin diversification. They were the first echinoids to achieve widespread biogeographical dispersal and achieved high levels of species richness compared to other clades of stem group echinoids. Following long-standing controversy regarding their phylogenetic affinities within the phylum Echinodermata,...Thompson, Jeffrey R ; Cotton, Laura J ; Candela, Yves ; Kutscher, Manfred ; Reich, Mike …
extinction, phylogeny, Bothriocidaris, sea urchin, Bayesian, and Neobothriocidaris
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2022
Journal article
Tremadocian and Floian (Ordovician) linguliformean brachiopods from the Stavelot–Venn Massif (Avalonia; Belgium and Germany)
Lower Ordovician linguliformean brachiopods from the Stavelot–Venn Massif (Belgium and Germany) are described systematically for the first time. The material comprises specimens from the Jalhay (Solwaster Member) and Ottré (Les Plattes Member) formations of Tremadocian and Floian ages, respectively. The Solwaster Member yielded a relatively diverse assemblage of nine species...Candela, Yves ; Mottequin, Bernard
Germany, Lingulida, Siphonotretida, Ordovician, Belgium, Acrotretida, and brachiopods
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Conference paper (unpublished)
IGCP 735 (2021-2025): rocks and the rise of Ordovician life: filling knowledge gaps in the Early Palaeozoic biodiversification (Rocks n'ROL)
Deciphering the complex interactions between climate change, biodiversity and ecosystem structuration is a major societal issue for future generations. The geological record offers the unique opportunity to document the impact of environmental changes in the biosphere in the past, and thus to provide some clues for the future. In this...Lefebvre, Bertrand ; Candela, Yves ; Hariri , Khadija ; Ghobadi Pour , Mansoureh ; Raevskaya, Elena …
stratigraphy , biodiversity, IGCP project , palaeobiogeography, Ordovician , and databases
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Journal article
A new hexactinellid sponge from the Silurian of the Pentland Hills (Scotland) with similarities to extant rossellids
The Pentland Hills sponge fauna (Llandovery, Telychian) consists of an unusual, aberrant assemblage, but of low diversity. A new specimen of a unique sponge, Eoghanospongia carlinslowpensis gen. et sp. nov., is described from the classic locality of R82. The mushroom-shaped, probably stalked body (peduncle attachment to body not exposed) resembles...Botting, Joseph P ; Candela, Yves ; Carrió, Vicen ; Crighton, William R B
Rossellidae, fossil, prostalia, Porifera, and North Esk Inlier
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Journal article
Storm-induced community Dynamics in the Fezouata Biota (Lower Ordovician, Morocco)
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 Celdobolus sp., Wosekella...Saleh, Farid ; Candela, Yves ; Harper, David A T ; Polechová, Marika ; Lefebvre, Bertrand …