Geobios is an academic journal published bimonthly by the publishing house Elsevier. Geobios is an international journal of paleontology, focusing on the areas of palaeobiology, palaeoecology, palaeobiogeography, stratigraphy and biogeochemistry.
Geobios is indexed and abstracted in: Science Citation Index, ISI, Bulletin signalétique, PASCAL, Geo Abstracts, Biological Abstracts, The Geoscience Database, Referativnyi Zhurnal, SciSearch, Research Alert and Current Contents/Physical, Chemical & Earth Sciences.
ISI-Web of Knowledge 2014 Citation metrics: 2-year ISI Impact Factor: 1.243 (#21/49, Q2); 5-year ISI Impact Factor: 1.337 (#22/49, Q2).
|1968 to present|
Articles are published only in English, following a standard peer-review process (usually involving 3 reviewers) supervised by an associate-editor through the Journal's submission web site. Articles are published in a printed (paper) format as well as in electronic format on the Geobios ScienceDirect web site. All taxonomic groups are treated, including microfossils, invertebrates, plants, vertebrates and ichnofossils.
Geobios welcomes descriptive papers based on original material (e.g. large Systematic Paleontology works), as well as more analytically and/or methodologically-oriented papers, provided they offer strong and significant biochronological/biostratigraphical, paleobiogeographical, paleobiological and/or phylogenetic new insights and perspectives. A high priority level is given to synchronic and/or diachronic studies based on multi- or inter-disciplinary approaches mixing various fields of Earth and Life Sciences. Works based on extant data are also considered, provided they offer significant insights into geological-time studies.
Geobios was first published in 1968. Up to 2011, the Associate-Editors' board has been exclusively based in Lyon (France), placed under the editorial responsibility of Louis David, André Schaaf, Patrick Racheboeuf, and Serge Legendre & Pierre Hantzpergue. Since 2009 the Editor in chief is Gilles Escarguel. Initially published by the University Claude Bernard Lyon 1, the journal is published since 2001 by Elsevier.
Anseranatidae, the magpie-geese, is a biological family of waterbirds. The only living species, the magpie goose, is a resident breeder in northern Australia and in southern New Guinea.Cladophorales
Cladophorales are an order of green algae, in the class Ulvophyceae.There is a plausible fossil example in the mid-Ordovician Winneshiek shaleCréchy
Créchy is a commune in the Allier department in central France.
Between this village and nearby Billy, lagerstätten have yielded a rich assemblage of fossils from the Oligocene-Miocene boundary (c. 24-23 million years ago).Ectosteorhachis
Ectosteorhachis is a genus of prehistoric lobe-finned fish that lived during the Permian period (Cisuralian epoch, about 270 to 299 million years ago). It belonged to the group of Tetrapodomorpha and to the family of Megalichthyidae. Ectosteorhachis was a fresh water fish.End-Botomian mass extinction
The end-Botomian mass extinction event, also known as the late early Cambrian extinctions, refer to two extinction intervals that occurred during Stages 4 and 5 of the Cambrian Period, approximately 513 to 509 million years ago. Estimates for the decline in global diversity over these events range from 50% of marine genera up to 80%. Among the organisms affected by this event were the small shelly fossils, archaeocyathids (an extinct group of sponges), trilobites, brachiopods, hyoliths, and mollusks .Ensifera
Ensifera is a suborder of insects that includes the various types of crickets and their allies including: true crickets, camel crickets, bush crickets or katydids, grigs, wetas and Cooloola monsters. It and the suborder Caelifera (grasshoppers and their allies) make up the order Orthoptera. Ensifera is believed to be a more ancient group than Caelifera, with its origins in the Carboniferous period, the split having occurred at the end of the Permian period. Unlike the Caelifera, the Ensifera contain numerous members that are partially carnivorous, feeding on other insects as well as plants.
"Ensifer" is Latin for "sword bearer", and refers to the typically elongated and blade-like ovipositor of the females.Garganornis
Garganornis (meaning "Gargano bird") is an extinct genus of enormous flightless anatid waterfowl from the Late Miocene of Gargano, Italy. The genus contains one species, G. ballmanni, named by Meijer in 2014. Its enormous size is thought to have been an adaptation to living in exposed, open areas with no terrestrial predators, and as a deterrent to the indigenous aerial predators like the eagle Garganoaetus and the giant barn owl Tyto gigantea.Ginkgoaceae
The Ginkgoaceae is a family of gymnosperms which appeared during the Mesozoic Era, of which the only extant representative is Ginkgo biloba, which is for this reason sometimes regarded as a living fossil. Formerly, however, there were several other genera, and forests of ginkgo existed. Because leaves can take such diverse forms within a single species, these are a poor measure of diversity, although differing structures of wood point to the existence of diverse ginkgo forests in ancient times.Megalichthyidae
The Megalichthyidae are a family of prehistoric lobe-finned fishes which lived from the late Devonian to the early Permian period.Mochlodon
Mochlodon is a genus of iguanodont dinosaurs from the Late Cretaceous.Nogodinidae
Nogodinidae is a family of planthoppers. They have membranous wings with delicate venation and can be confused with members of other Fulgoroid families such as the Issidae and Tropiduchidae. Some authors treat it as a subfamily of the Issidae. Some of their key features are a frons ("face") that is longer than wide and a reticulate wing venation. They are less than 2 cm long. The antenna arises well below the eye, has the base clubbed and flagellum unsegmented. The lateral ocelli (simple eyes) are outside the margins of the face. The face has carinae (or keels) on the edge. On the hind leg, the second tarsal segment has an apical spine arising from it. The tibia of the hind leg also has spines towards the tip. An important family character is found in the shape of the male genital structure, a style that is longer than broad. Most members of this family are forest species.
Several fossil species have been described from Eocene Baltic and Miocene Chiapas amber. Additionally, a tribe, Celinapterixini, has been erected on the basis of an Argentinian fossil that could not be placed in any of the tribes of extant Nogodinid hoppers.Pascualgnathus
Pascualgnathus is an extinct genus of traversodontid cynodonts from the Middle Triassic of Argentina. Fossils have been found from the Río Seco de la Quebrada Formation. The type species P. polanskii was named in 1966.Protospongia
Protospongia is a genus of Porifera known from the Middle Cambrian Burgess Shale. 102 specimens of Protospongia are known from the Greater Phyllopod bed, where they comprise 0.19% of the community.Schizodelphis
Schizodelphis is an extinct genus of cetacean.Serge Legendre
Serge Legendre is a research scientist in the field of paleobiology with the Institute of Paleoenvironment & Paleobiosphere, University of Lyon and Editor-in-Chief of Geobios, a scientific journal published bi-monthly.Stylophora
The stylophorans are an extinct, possibly polyphyletic group allied to the Paleozoic Era echinoderms, comprising the prehistoric cornutes and mitrates. It is synonymous with the subphylum Calcichordata. Their unusual appearances have led to a variety of very different reconstructions of their anatomy, how they lived, and their relationships to other organisms.Theriosuchus
Theriosuchus is an extinct genus of atoposaurid mesoeucrocodylian from Late Jurassic to Early Cretaceous of Europe (southern England), Southeast Asia (Thailand) and western North America (Wyoming), with fragmentary records from Middle Jurassic and Early Cretaceous sites in China, Morocco, and Scotland.Ulvophyceae
The Ulvophyceae or ulvophytes are a class of green algae, distinguished mainly on the basis of ultrastructural morphology, life cycle and molecular phylogenetic data. The sea lettuce, Ulva, belongs here. Other well-known members include Caulerpa, Codium, Acetabularia, Cladophora, Trentepohlia and Monostroma.
The Ulvophytes are diverse in their morphology and their habitat. Most are seaweeds such as those listed above. Others, such as Rhizoclonium, Pithophora and some species of Cladophora live in fresh water and in some areas are considered weeds.Vinceria
Vinceria is an extinct genus of kannemeyeriiform dicynodont in the family Shansiodontidae. Fossils of the genus have been found in the Anisian Cerro de las Cabras Formation and Carnian Río Seco de la Quebrada Formation of Argentina.