The Hauterivian–Barremian lignitic bone bed of Angeac (Charente, south-west France): stratigraphical, palaeobiological and palaeogeographical implications

Néraudeau, Didier; Allain, Ronan; Ballèvre, Michel; Batten, David J.; Buffetaut, Éric; Colin, Jean-Paul; Dabard, Marie‐Pierre; Daviero‐Gomez, Véronique; Albani, Abderrazak El; Gómez, Bernard; Groshény, Danièle; Lœuff, Jean Le; Leprince, A.; Martı́n-Closas, Carles; Masure, Edwige; Mazin, Jean‐Michel; Philippe, Marc; Pouech, J.; Tong, Haiyan; Tournepiche, Jean‐François; Vullo, Romain

doi:10.1016/j.cretres.2012.01.006

Cited by 46 publications

(49 citation statements)

References 41 publications

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“…; Néraudeau et al . ), they are now dated Berriasian, based on charophyte biozones (Benoit et al . ).…”

Section: Geological and Palaeontological Settingsmentioning

confidence: 99%

“…The palaeoenvironment is a swamp or alluvial plain bordered by conifers and ferns in a tropical to subtropical climate (Néraudeau et al . ; Benoit et al . ).…”

Section: Geological and Palaeontological Settingsmentioning

confidence: 99%

“…The locality has provided many vertebrate remains, including teeth and osteoderms belonging to at least four different crocodyliforms (Néraudeau et al . ) as well as hundreds of turtle plates and ornithomimosaur dinosaur bones bearing tooth marks. This demonstrates significant predation and/or scavenging activity in this region (Rozada , ; Rozada et al .…”

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confidence: 99%

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Taphonomic study of a pleurosternid turtle shell from the Early Cretaceous of Angeac-Charente, southwest France

Gônet

Rozada

Bourgeais³

et al. 2019

LET

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The feeding behaviour of crocodilians leads to the formation of particular assemblages by accumulation of carcasses on the bottom or at the edge of water points, in addition to the characteristic marks it leaves on bones, making crocodilians important taphonomic agents. We report here the case of a Pleurosternidae turtle shell, Pleurosternon bullockii (Owen ), discovered in 2014 in Angeac‐Charente in south‐western France. The shell shows a range of tooth marks left by a crocodyliform. Several elements designate Goniopholis as the most likely author of the marks and support the use of the ‘nutcracker’ technique. Some marks appear to have healed, while others suggest that this P. bullockii individual suffered from shell diseases. Many turtle remains and some ornithomimosaur dinosaur bones from Angeac‐Charente bear marks of a crocodyliform attack.

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“…; Néraudeau et al . ), they are now dated Berriasian, based on charophyte biozones (Benoit et al . ).…”

Section: Geological and Palaeontological Settingsmentioning

confidence: 99%

“…The palaeoenvironment is a swamp or alluvial plain bordered by conifers and ferns in a tropical to subtropical climate (Néraudeau et al . ; Benoit et al . ).…”

Section: Geological and Palaeontological Settingsmentioning

confidence: 99%

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Taphonomic study of a pleurosternid turtle shell from the Early Cretaceous of Angeac-Charente, southwest France

Gônet

Rozada

Bourgeais³

et al. 2019

LET

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“…In the last decade, several fossil plant localities have been reported from the Cretaceous of western France (Gomez et al, 2004Néraudeau et al, 2002Néraudeau et al, , 2003Néraudeau et al, , 2005Néraudeau et al, , 2008Néraudeau et al, , 2009Néraudeau et al, , 2012Néraudeau et al, , 2013. By contrast, the department of Vienne (86) is well-known in the south-western part of the Paris basin for marine fossil assemblages, especially from the Upper Jurassic deposits and the Cenomanian "Green Sandstones" (Mathieu, 1968).…”

Section: Introductionmentioning

confidence: 99%

Plant-dominated assemblage and invertebrates from the Lower Cenomanian of Jaunay-Clan, western France

Valentin

Gómez

Daviero‐Gomez

et al. 2014

Comptes Rendus Palevol

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, and terrestrial and aquatic freshwater angiosperms (Eucalyptolaurus depreii, Ploufolia). They are associated with a coleopteran insect that shows systematic affinities to the modern subfamily Chrysomelinae (Chrysomelidae). This assemblage suggests connections with arborescent vegetation growing in calm freshwater environment. Brackish to marine invertebrates also occur and include a dakoticancroid crab (Brachyura, Podotremata, Dakoticancroidea) and a few bivalves (Brachidontes). They suggest brackish episodes during pond sedimentation in a coastal environment. Lastly, vertebrates are represented by an isolated feather. RESUME Deux nouvelles localités fossiles sont découvertes sur la voie de chemin de fer de la "LGV SEA" dans le Cénomanien inférieur de Jaunay-Clan (JC), près de Poitiers, ouest de la France. Des dépôts argileux finement laminés ont livré un grand nombre de plantes fossiles comprenant des fougères (Cladophlebis, Osmundophyllum, Ruffordia goeppertii, Sphenopteris), des conifères (Brachyphyllum, Dammarophyllum, Pagiophyllum), des angiospermes terrestres et aquatiques (Eucalyptolaurus depreii, Ploufolia). Ils sont associés à un insecte coléoptère présentant des affinités systématiques avec la sous-famille moderne des Chrysomelinae (Chrysomelidae). Cet assemblage suggère des connections avec une végétation arborescente poussant dans un environnement dulçaquicole calme. Des invertébrés saumâtres à marins ont été trouvés également et incluent un crabe de type dakoticancroïde (Brachyura, Podotremata, Dakoticancroidea), et quelques bivalves (Brachidontes). Ils suggèrent des épisodes saumâtres durant la sédimentation dans un milieu paralique en position côtière/lagunaire. Enfin, les vertébrés sont représentés par une plume isolée.

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“…This is an astounding conclusion given that the largest known sauropod femora measure well over 2 meters in length [51], [52] and mass estimates for many sauropods exceed 20,000 kg [6], [7], [9]! In contrast, although certain eutherian mammal taxa have achieved gigantism (proboscideans and Paraceratherium , maximum known femur lengths of approximately 1.7 m and 1.2 m, respectively [11], [53]), it was much rarer [7], [8].…”

Section: Discussionmentioning

confidence: 99%

What Lies Beneath: Sub-Articular Long Bone Shape Scaling in Eutherian Mammals and Saurischian Dinosaurs Suggests Different Locomotor Adaptations for Gigantism

Bonnan

Wilhite

Masters³

et al. 2013

PLoS ONE

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Eutherian mammals and saurischian dinosaurs both evolved lineages of huge terrestrial herbivores. Although significantly more saurischian dinosaurs were giants than eutherians, the long bones of both taxa scale similarly and suggest that locomotion was dynamically similar. However, articular cartilage is thin in eutherian mammals but thick in saurischian dinosaurs, differences that could have contributed to, or limited, how frequently gigantism evolved. Therefore, we tested the hypothesis that sub-articular bone, which supports the articular cartilage, changes shape in different ways between terrestrial mammals and dinosaurs with increasing size. Our sample consisted of giant mammal and reptile taxa (i.e., elephants, rhinos, sauropods) plus erect and non-erect outgroups with thin and thick articular cartilage. Our results show that eutherian mammal sub-articular shape becomes narrow with well-defined surface features as size increases. In contrast, this region in saurischian dinosaurs expands and remains gently convex with increasing size. Similar trends were observed in non-erect outgroup taxa (monotremes, alligators), showing that the trends we report are posture-independent. These differences support our hypothesis that sub-articular shape scales differently between eutherian mammals and saurischian dinosaurs. Our results show that articular cartilage thickness and sub-articular shape are correlated. In mammals, joints become ever more congruent and thinner with increasing size, whereas archosaur joints remained both congruent and thick, especially in sauropods. We suggest that gigantism occurs less frequently in mammals, in part, because joints composed of thin articular cartilage can only become so congruent before stress cannot be effectively alleviated. In contrast, frequent gigantism in saurischian dinosaurs may be explained, in part, by joints with thick articular cartilage that can deform across large areas with increasing load.

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The Hauterivian–Barremian lignitic bone bed of Angeac (Charente, south-west France): stratigraphical, palaeobiological and palaeogeographical implications

Cited by 46 publications

References 41 publications

Taphonomic study of a pleurosternid turtle shell from the Early Cretaceous of Angeac-Charente, southwest France

Taphonomic study of a pleurosternid turtle shell from the Early Cretaceous of Angeac-Charente, southwest France

Plant-dominated assemblage and invertebrates from the Lower Cenomanian of Jaunay-Clan, western France

What Lies Beneath: Sub-Articular Long Bone Shape Scaling in Eutherian Mammals and Saurischian Dinosaurs Suggests Different Locomotor Adaptations for Gigantism

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