Search Constraints
Search Results
-
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 …
-
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
-
Journal article
Synoptic revision of the Silurian fauna from the Pentland Hills, Scotland described by Lamont (1978)
Archibald Lamont (1907-1985) sampled the North Esk Inlier Silurian fauna for almost 30 years. He had amassed a substantial fauna that has been, in part, bequeathed to the National Museums Scotland after his death. Unfortunately, the descriptions of the faunas in his last opus were careless and the illustrations were...Candela, Yves ; Crighton, William R B
systematics, Scotland, museum collections, North Esk Inlier, and palaeontology
-
Conference paper (unpublished)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
-
Abstract
Brachiopods from the Ordovician of southern Belgium (Avalonia): the end of a terra incognita
Contrary to the well-exposed Devonian–Carboniferous rock sequence, the thick siliciclastic Cambrian–Silurian succession of Belgium is poor in macrofossils and, more especially, in brachiopods. These rocks mostly crop out in the Brabant and the Stavelot–Venn massifs, and in the Condroz Inlier. Occurrences of Ordovician brachiopods have been reported since the second...Mottequin, Bernard ; Candela, Yves
Avalonia, brachiopods, Belgium, and Ordovician
-
Poster (unpublished)
The Fezouata brachiopod fauna: an Early Ordovician diversification at high latitudes
Brachiopods are a neglected part of the Fezouata fauna. Brachiopods occur in two distinct horizons: firstly in the lower part of the Fezouata Shale (upper Tremadocian); secondly in the upper part of the Fezouata Shale (lower Floian). The fauna is dominated by a mixture of lingulides, siphonotretides and orthides. The...Candela, Yves ; Harper, David T ; Mergl, Michal
Ordovician outcrops , Fezouata fauna, Brachiopods, and Morocco
-
Journal article
Late Ordovician brachiopod faunas from Pomeroy, Northern Ireland: a palaeoenvironmental synthesis
Comparisons of the Caradoc assemblages with North American biofacies indicate that the Bardahessiagh Formation was deposited during a transgressive regime, which peaked with the presence of a typical Sericoidea association (member (II)). These diverse and exceptionally preserved faunas lived below the storm-wave base. The assemblages also contained a shallower water...Candela, Yves
-
Journal article
Statistical comparisons of late Caradoc (Ordovician) brachiopod faunas around the Iapetus Ocean, and terranes located around Australia, Kazakhstan and China
Statistical comparisons, based on 173 genera distributed in 27 Caradoc localities from around the world, show strong faunal similarities between North and South China and the Chu-Ili terrane, the Chingiz terrane and Australia/Tasmania. The Scoto-Appalachian fauna of the Laurentian terrane shows closer similarities to faunas from the Gornoi-Altai terrane (belonging...Candela, Yves
-
Journal article
Late Ordovician (Katian) brachiopods from the Southern Uplands of Scotland: biogeographic patterns on the edge of Laurentia
Some 40 brachiopod species are known from the localities of Kilbucho and Wallace’s Cast in the Kirkcolm Formation in the Northern Belt of the Southern Uplands of Scotland. The fauna is diverse despite the relatively small numbers of brachiopod specimens (c. 180) available for study. Much of the fauna was...Candela, Yves ; Harper, David A T
-
Journal article
Brachiopod associations from the Middle Ordovician of the Oslo Region, Norway
The marine upper Darriwilian (Middle Ordovician) Elnes Formation of southern Norway contains very rich and diverse invertebrate faunas. Stratigraphically detailed recent collections of these well-preserved faunas have permitted a more thorough description of the various faunal groups and their preferences in the late Middle Ordovician of the Oslo Region, southern...Candela, Yves ; Hansen, T.
brachiopod, deposition, Oslo region, Ordovician, and association
-
Journal article
Phylogenetic relationships of leptellinid brachiopods
The relationships among the diverse genera comprising the family Leptellinidae (Brachiopoda) are reviewed in the light of the revised edition of the Treatise on Invertebrate Palaeontology. Taxonomic work reassessed all the genera identified as Leptellinidae in the most current classification. Four genera were discarded, namely Bekkerella, Benignites, Leptastichidia and Nikitinamena....Candela, Yves
Biogeography, taxor, cladistics, Palaeozoic, Ordovician, Leptellinidae, taxonomy, and Brachiopoda
-
Journal article
A systematic revision of the Ordovician plectambonitoidean brachiopods Chonetoidea and Sericoidea
The revised Treatise on Invertebrate Paleontology, part H: Brachiopoda regards Chonetoidea Jones and Sericoidea Lindström synonymic, on the basis of characters that were considered common to both genera (e.g. ornament type, number of septules). However, some features (e.g. number of septules) discriminate specimens at species level, rather than at generic...Candela, Yves
functional morphology, ecology, distribution, Sericoidea association, and taxonomy
-
Journal article
Comments on the proposed conservation of the specific name of Anathyris monstrum Khalfin, 1933 (currently Anathyrella monstrum; Brachiopoda, Athyridida)(Case 3632) 4
Alvarez & Modzalevskaya presented a detailed and thorough application, in which they clarified the issues arising from Khalfin’s original works (BZN 70: 185–189; Khalfin, 1933a, 1933b, 1946) and proposed clear resolutions.Candela, Yves
-
Book chapter
Biodiversity, biogeography and phylogeography of Ordovician rhynchonelliform brachiopods
The phylogeographical evolution and the consequent changing distribution and diversity of rhynchonelliform brachiopods through the Ordovician are linked to the dynamic palaeogeography of the period. The Early Ordovician (Tremadocian and Floian) is characterized by globally low-diversity faunas with local biodiversity epicentres, notably on the South China Palaeoplate; low-latitude porambonitoid-dominated faunas...Harper, David A T ; Rasmussen, Christian M Ø ; Liljeroth, Maria ; Blodgett, Robert B ; Candela, Yves …