A new abelisaurid dinosaur from the Late Cretaceous of southern France: Palaeobiogeographical implications

Tortosa, Thierry; Buffetaut, Éric; Vialle, Nicolas; Dutour, Yves; Turini, Eric; Cheylan, Gilles

doi:10.1016/j.annpal.2013.10.003

Cited by 111 publications

(162 citation statements)

References 40 publications

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“…It has been suggested that medium-sized theropods underwent a substantial decline across the J/K boundary, and were replaced by larger-bodied carcharodontosaurids and spinosaurids (Novas et al, 2013;Tortosa et al, 2014). Whereas a literal reading of the fossil record might indicate an Early Cretaceous diversification of smaller-bodied coelurosaurian theropods (Zanno & Makovicky, 2013;Tortosa et al, 2014;X. Wang et al, 2014b), at least a portion of this is undoubtedly an artefact of variation in the degree of Early Cretaceous preservation and the discovery of numerous new species in the Jehol Biota.…”

Section: (3) Biotic Interactions and Evidence For A Faunal Turnover (mentioning

confidence: 99%

“…The only known herbivorous tetanuran theropod lineage in the Jurassic has no known Cretaceous representative (Novas et al, 2015). It has been suggested that medium-sized theropods underwent a substantial decline across the J/K boundary, and were replaced by larger-bodied carcharodontosaurids and spinosaurids (Novas et al, 2013;Tortosa et al, 2014). Whereas a literal reading of the fossil record might indicate an Early Cretaceous diversification of smaller-bodied coelurosaurian theropods (Zanno & Makovicky, 2013;Tortosa et al, 2014;X.…”

Section: (3) Biotic Interactions and Evidence For A Faunal Turnover (mentioning

confidence: 99%

“…7A). Other large-bodied groups, including Carcharodontosauridae and Spinosauridae, have their earliest representatives in the latest Jurassic of Tanzania , and preceded the origins and diversification of several major lineages of tetanurans Novas et al, 2013;Zanno & Makovicky, 2013;Tortosa et al, 2014). Smaller-bodied coelurosaurians (e.g.…”

Section: (3) Vertebrates (A) Dinosaursmentioning

confidence: 99%

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Biotic and environmental dynamics through theLateJurassic–EarlyCretaceous transition: evidence for protracted faunal and ecological turnover

et al. 2016

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The Late Jurassic to Early Cretaceous interval represents a time of environmental upheaval and cataclysmic events, combined with disruptions to terrestrial and marine ecosystems. Historically, the Jurassic/Cretaceous (J/K) boundary was classified as one of eight mass extinctions. However, more recent research has largely overturned this view, revealing a much more complex pattern of biotic and abiotic dynamics than has previously been appreciated. Here, we present a synthesis of our current knowledge of Late Jurassic-Early Cretaceous events, focusing particularly on events closest to the J/K boundary. We find evidence for a combination of short-term catastrophic events, large-scale tectonic processes and environmental perturbations, and major clade interactions that led to a seemingly dramatic faunal and ecological turnover in both the marine and terrestrial realms. This is coupled with a great reduction in global biodiversity which might in part be explained by poor sampling. Very few groups appear to have been entirely resilient to this J/K boundary 'event', which hints at a 'cascade model' of ecosystem changes driving faunal dynamics. Within terrestrial ecosystems, larger, more-specialised organisms, such as saurischian dinosaurs, appear to have suffered the most. Medium-sized tetanuran theropods declined, and were replaced by larger-bodied groups, and basal eusauropods were replaced by neosauropod faunas. The ascent of paravian theropods is emphasised by escalated competition with contemporary pterosaur groups, culminating in the explosive radiation of birds, although the timing of this is obfuscated by biases in sampling. Smaller, more ecologically diverse terrestrial non-archosaurs, such as lissamphibians and mammaliaforms, were comparatively resilient to extinctions, instead documenting the origination of many extant groups around the J/K boundary. In the marine realm, extinctions were focused on low-latitude, shallow marine shelf-dwelling faunas, corresponding to a significant eustatic sea-level fall in the latest Jurassic. More mobile and ecologically plastic marine groups, such as ichthyosaurs, survived the boundary relatively unscathed. High rates of extinction and turnover in other macropredaceous marine groups, including plesiosaurs, are accompanied by the origin of most major lineages of extant sharks. Groups which occupied both marine and terrestrial ecosystems, including crocodylomorphs, document a selective extinction in shallow marine forms, whereas turtles appear to have diversified. These patterns suggest that different extinction selectivity and ecological processes were operating between marine and terrestrial ecosystems, which were ultimately important in determining the fates of many key groups, as well as the origins of many major extant lineages. We identify a series of potential abiotic candidates for driving these patterns, including multiple bolide impacts, several episodes of flood basalt eruptions, dramatic climate change, and major disruptions to oceanic systems. The J/K t...

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Section: (3) Biotic Interactions and Evidence For A Faunal Turnover (mentioning

confidence: 99%

Section: (3) Biotic Interactions and Evidence For A Faunal Turnover (mentioning

confidence: 99%

Section: (3) Vertebrates (A) Dinosaursmentioning

confidence: 99%

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Biotic and environmental dynamics through theLateJurassic–EarlyCretaceous transition: evidence for protracted faunal and ecological turnover

et al. 2016

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“…Later works from other regions supported this hypothesis but pointed out that titanosaurid sauropods persisted until the end of the Maastrichtian alongside an abundant population of hadrosauroids (Canudo, 2001;Laurent, Bilotte, & Le Loeuff, 2002;L opez-Martínez et al, 2001;Riera et al, 2009;Vila et al, 2012Vila et al, , 2013. Apart from the clear patterns characterizing these two major groups of herbivorous dinosaurs, the turnover pattern seems to be more complex since it involves two additional herbivore groups (nodosaurid ankylosaurs and rhabdodontids ornithopods) as well a distinct fauna of carnivorous theropods (mainly abelisaurid and dromaeosaurid taxa) which is still poorly known (Canudo & Ruiz-Omeñaca, 2003;Csiki-Sava et al, 2015;Riera et al, 2009;Sell es, Vila, & Galobart, 2014a;Torices, Currie, Canudo, & Pereda-Suberbiola, in press;Tortosa et al, 2014). Nevertheless, these previous studies on faunal composition and abundance have been based only on analysis of apparent frequency and occurrence of taxa in a particular time interval or geographic region, but no numerical data have been provided so far for the whole Ibero-Armorican dinosaur record, nor has such data been analyzed statistically to quantify macro evolutionary and ecological patterns.…”

Section: Introductionmentioning

confidence: 96%

Diversity and faunal changes in the latest Cretaceous dinosaur communities of southwestern Europe

Vila

Sellés

Brusatte

2016

Cretaceous Research

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“…7C-K). The diversity at the site is constituted by a medium-size primitive form, whose characters are congruent with abelisaurid ceratosaurians previously described from the Iberoccitanian Upper Cretaceous (Astibia et al, 1990;Le Loeuff, 1992;Tortosa et al, 2014), and remains of maniraptoran theropods representing various members of Paraves, whose analysis is still in progress. Presently, theropod diversity at Lo Hueco has been established on the basis on teeth whose analysis identifies five morphotypes.…”

Section: Theropod Dinosaursmentioning

confidence: 96%

The biota of the Upper Cretaceous site of “Lo Hueco” (Cuenca, Spain)

Ortega¹,

Bardet

Barroso-Barcenilla

et al. 2015

Journal of Iberian Geology

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The Late Cretaceous (Campanian-Maastrichtian) fossil site of Lo Hueco was recently discovered close to the village of Fuentes (Cuenca, Spain) during the cutting of a little hill for installation of the railway of the Madrid-Levante high-speed train. To date, it has yielded a rich collection of well-preserved Cretaceous macrofossils, including plants, invertebrates, and vertebrates. The recovered fossil assemblage is mainly composed of plants, molluscs (bivalves and gastropods), actinopterygians and teleosteans fishes, amphibians, panpleurodiran (bothremydids) and pancryptodiran turtles, squamate lizards, eusuchian crocodyliforms, rhabdodontid ornithopods, theropods (mainly dromaeosaurids), and titanosaur sauropods. This assemblage was deposited in a near-coast continental muddy floodplain crossed by distributary sandy channels, exposed intermittently to brackish or marine and freshwater flooding as well as to partial or total desiccation events.

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A new abelisaurid dinosaur from the Late Cretaceous of southern France: Palaeobiogeographical implications

Cited by 111 publications

References 40 publications

Biotic and environmental dynamics through theLateJurassic–EarlyCretaceous transition: evidence for protracted faunal and ecological turnover

Biotic and environmental dynamics through theLateJurassic–EarlyCretaceous transition: evidence for protracted faunal and ecological turnover

Diversity and faunal changes in the latest Cretaceous dinosaur communities of southwestern Europe

The biota of the Upper Cretaceous site of “Lo Hueco” (Cuenca, Spain)

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