Assemblages floristiques de l'Albien-Cénomanien de Charente-Maritime (SO France)

Gómez, Bernard; Daviero‐Gomez, Véronique; Perrichot, Vincent; Thévenard, Frédéric; Coiffard, Clément; Philippe, Marc; Néraudeau, Didier

doi:10.1016/j.annpal.2004.03.003

Cited by 61 publications

(49 citation statements)

References 13 publications

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“…Then, a community composed of Ginkgoales in association with primitive angiosperms developed in riparian zones. They were complemented with highly diversified fluvial angiosperms and rare brackish water-related angiosperms (Gomez et al, 2004;Coiffard et al, 2006). The Cenomanian amber forest of the eastern Pyrenees was apparently less diverse and the only known taxa belong to xerophytic conifers of the families yCheirolepidiaceae and Cupressaceae, which grew along the margins of a marine-dominated estuarine environment (Girard et al, 2013).…”

Section: Paleoenvironmentmentioning

confidence: 98%

Evolutionary and paleobiological implications of Coleoptera (Insecta) from Tethyan-influenced Cretaceous ambers

Peris

Ruzzier

Perrichot

et al. 2016

Geoscience Frontiers

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International audienceThe intense study of coleopteran inclusions from Spanish (Albian in age) and French (Albian–Santonian in age) Cretaceous ambers, both of Laurasian origin, has revealed that the majority of samples belong to the Polyphaga suborder and, in contrast to the case of the compression fossils, only one family of Archostemata, one of Adephaga, and no Myxophaga suborders are represented. A total of 30 families from Spain and 16 families from France have been identified (with almost twice bioinclusions identified in Spain than in France); 13 of these families have their most ancient representatives within these ambers. A similar study had previously only been performed on Lebanese ambers (Barremian in age and Gondwanan in origin), recording 36 coleopteran families. Few lists of taxa were available for Myanmar (Burmese) amber (early Cenomanian in age and Laurasian in origin). Coleopteran families found in Cretaceous ambers share with their modern relatives mainly saproxylic and detritivorous habits in the larval or adult stages, rather than wood-boring behavior. Fifteen of the coleopteran families occur in both the Lebanese and Spanish ambers; while only five are present in both Spanish and French. Considering the paleogeographic proximity and similarity of age of the Spanish and French ambers, the small number of taxa found in common at both areas is surprising. The ancient origin for the Lebanese and Spanish ambers, the paleogeography (including some barriers for terrestrial biota) and the local paleohabitats are factors that may explain the dissimilarity with the French specimens. Wildfires are believed to be a more likely cause of resin production during the Cretaceous than infestation by beetles. Current knowledge of the beetle species found in the Cretaceous ambers is introduced

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Section: Paleoenvironmentmentioning

confidence: 98%

Evolutionary and paleobiological implications of Coleoptera (Insecta) from Tethyan-influenced Cretaceous ambers

Peris

Ruzzier

Perrichot

et al. 2016

Geoscience Frontiers

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“…The corresponding palaeoenvironment is estimated to have been a tropical moist forest growing near the shore in a mosaic of estuarine and mangrove-like context, and thus with a marine influence . The amber-producer (Araucariaceae or the extinct gymnosperm family Cheirolepidiaceae) was likely the dominant tree of this ecosystem but various angiosperms were also present in some confined, limnetic environments (Gomez et al 2004).…”

Section: Palaeobiogeography and Palaeoecologymentioning

confidence: 99%

Fossil evidence for the early ant evolution

Perrichot

Lacau

Néraudeau

et al. 2007

Naturwissenschaften

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Ants are one of the most studied insects in the world; and the literature devoted to their origin and evolution, systematics, ecology, or interactions with plants, fungi and other organisms is prolific. However, no consensus yet exists on the age estimate of the first Formicidae or on the origin of their eusociality. We review the fossil and biogeographical record of all known Cretaceous ants. We discuss the possible origin of the Formicidae with emphasis on the most primitive subfamily Sphecomyrminae according to its distribution and the Early Cretaceous palaeogeography. And we review the evidence of true castes and eusociality of the early ants regarding their morphological features and their manner of preservation in amber. The mid-Cretaceous amber forest from south-western France where some of the oldest known ants lived, corresponded to a moist tropical forest close to the shore with a dominance of gymnosperm trees but where angiosperms (flowering plants) were already diversified. This palaeoenvironmental reconstruction supports an initial radiation of ants in forest ground litter coincident with the rise of angiosperms, as recently proposed as an ecological explanation for their origin and successful evolution.

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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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Assemblages floristiques de l'Albien-Cénomanien de Charente-Maritime (SO France)

Cited by 61 publications

References 13 publications

Evolutionary and paleobiological implications of Coleoptera (Insecta) from Tethyan-influenced Cretaceous ambers

Evolutionary and paleobiological implications of Coleoptera (Insecta) from Tethyan-influenced Cretaceous ambers

Fossil evidence for the early ant evolution

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

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