Search results for "FOSS"
showing 10 items of 556 documents
Isotopic ordering in eggshells reflects body temperatures and suggests differing thermophysiology in two Cretaceous dinosaurs
2015
International audience; Our understanding of the evolutionary transitions leading to the modern endothermic state of birds and mammals is incomplete, partly because tools available to study the thermo-physiology of extinct vertebrates are limited. Here we show that clumped isotope analysis of eggshells can be used to determine body temperatures of females during periods of ovulation. Late Cretaceous titanosaurid eggshells yield temperatures similar to large modern endo-therms. In contrast, oviraptorid eggshells yield temperatures lower than most modern endotherms but B6 °C higher than co-occurring abiogenic carbonates, implying that this taxon did not have thermoregulation comparable to mod…
Early human peopling of Sicily: Evidence from the Mesolithic skeletal remains from Grotta d'Oriente
2010
The site of Grotta d'Oriente, Island of Favignana, Sicily has yielded the complete skeleton of an adult female (OB) dated to the Mesolithic age. The cranial morphometry of this individual can provide us with some useful information about the peopling of Sicily in the Early Holocene period.Morphological affinities of OB and other Sicilian Mesolithic specimens were assessed to verify hypotheses concerning the early peopling of Sicily.Craniofacial metric data were employed in a comparative analysis with European Upper Palaeolithic (UP), Mesolithic, Neolithic, and Copper/Bronze age samples, and contemporary Italians. Both a model-free and a model-bound approach were used not only to calculate c…
“Phraseological fossils”: morphology of "fossil words" as idiomatic words in Spanish idioms
2020
[ES] En el presente trabajo pretendemos ofrecer un análisis de la configuración formal del tipo de palabras idiomáticas que denominamos “fósiles fraseológicos”. Para ello, tras delimitar los conceptos de “palabra idiomática” y “fósil fraseológico”, se aclaran los procedimientos metodológicos para recopilar este tipo de voces en un diccionario general actual como el DLE, y se procede al análisis del corpus obtenido. El principal rasgo de los fósiles fraseológicos es que presentan los cambios evolutivos característicos de la evolución del latín al español, como voces patrimoniales que son. [EN] The objective of this paper is to offer an analysis of the morphology of the kind of idiomatic word…
New Miocene locality in Turkey with evidence on the origin of Ramapithecus and Sivapithecus.
1977
Collections in early Middle Miocene deposits at Pasalar in Turkey have yielded a very rich fauna. Included in this are two hominoid species referred here to Sivapithecus darwini (Abel) 1902 and Ramapithecus wickeri (Leakey) 1962. These are both more primitive morphologically and earlier in time than other species of these genera, and they provide evidence that Sivapithecus and Ramapithecus are closely related and that their early diversification may have occurred not in Africa but in Eurasia.
The southernmost Miocene occurrence of the last European herpetotheriid Amphiperatherium frequens (Metatheria, Mammalia)
2012
Abstract The present work provides for the first time a detailed description of teeth attributable to metatherians in the Miocene fossil record of Spain, and justifies their generic and specific ascription. The fossil elements found correspond to Amphiperatherium frequens, the last herpetotheriid that inhabited Europe. This is so far the southernmost occurrence of this species, thus showing that its geographic range extended further southward than previously thought.
Una nueva especie de <i>Agriarctos</i> (Ailuropodinae, Ursidae, Carnivora) en la localidad de Nombrevilla 2 (Zaragoza, España)
2011
Una nueva especie de úrsido primitivo, Agriarctos beatrix procedente de la localidad de Nombrevilla 2 (Zaragoza, cuenca de Calatayud-Daroca) es descrita en este trabajo. Los nuevos fósiles de Nombrevilla 2 se relacionan estrechamente con Agriarctos depereti de la localidad de Soblay (Vallesiense superior, Francia), pero en la forma española los caracteres derivados compartidos son más primitivos. Agriarctos beatrix es la primera aparición conocida hasta el presente de un miembro de la subfamilia Ailuropodinae en el registro fossil.
Early Aptian corals from Peñascal (Bilbao, N Spain)
2020
From two horizons in the lower Aptian Peñascal limestone Formation south of Bilbao 22 coral species are reported. The corals belong to the scleractinian families Actinastraeidae, Eugyridae, Haplaraeidae, Latomeandridae, and Solenocoeniidae, and the octocorallian family Helioporidae. The stratigraphic distribution of the species lies between the Berriasian to Cenomanian, but most species have a distribution between the Barremian and Albian. The faunas show most palaeobiogeographical relationship to faunas from the Hauterivian to Albian of the European Boreal, the Western Atlantic and the Western Tethys.
Chirotheria and Other Ichnotaxa of the European Triassic
2004
At the end of the Permian, numerous amphibians and therapsids vanished, creating many empty ecological niches, which were occupied by new creatures. This event brought new trends in animal locomotion thanks to modifications of the skeleton limbs. The newcomers were faster and more dangerous for other families. The prominent ichnogenera were Synaptichnium, Chirotherium, Brachychirotherium, Isochirotherium, and Sphingopus. Their trackmakers were Thecodonts, reptiles having the above-mentioned evolutive characteristics. Dinosaurs, which appeared at the end of the Triassic period, were likely their descendants, which raises the question of when and where the dinosaurs originated. The comparison…
Book Review: The trace-fossil record of major evolutionary events.
2020
Book Review: M. Gabriela Mangano & Luis A. Buatois (eds) (two volumes). 2016. The trace-fossil record of major evolutionary events. Volume 1: Precambrian and Paleozoic. Springer. Topics in Geobiology, 39, 358 pp. (ISBN 978-94-017-9599-9). M. Gabriela Mangano & Luis A. Buatois (eds) (two volumes). 2016. The trace-fossil record of major evolutionary eventsThe trace-fossil record of major evolutionary events. Volume 2: Mesozoic and Cenozoic. Springer. Topics in Geobiology, 40, 485 pp. (ISBN 978-94-017-9596-8).
A Reconstruction of the Taphonomic History of GBY
2011
This chapter aims to reconstruct the taphonomic processes that influenced the assemblages of Layers V-5 and V-6, as well as to identify the taphonomic role of particular agents that may have influenced the fossil bones and the stone artifacts deposited in these layers, and considers these results vis-a-vis other data, both from the site and experimental.