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

Geoscience Frontiers 2016年第4期7卷 695-706页

作者： David Peris Enrico Ruzzier Vincent Perrichot xavier delclos Departament de Dinamica de la Terra i de l'Ocea and lnstitut de Recerca de la Biodiversitut (IRBio) Facultat de Geologia Universitat de Barcelona Marti i Franques s/n 08071 Barcelona Spain Department of Life Science Natural History Museum Cromwell Rd SW7 5BD London UK UMR CNRS 6118 Geosciences & OSUR Universite de Rennes 1 35042 Rennes cedex France

The 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.

关键词： Beetle Fossil Laurasia Gondwana Resin production

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Mesozoic Evaniidae (Insecta:Hymenoptera) in Spanish Amber:Reanalysis of the Phylogeny of the Evanioidea

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Acta Geologica Sinica(English Edition) 2010年第4期84卷 809-827页

作者： Enrique PENALVER Jaime ORTEGA-BLANCO André NEL xavier delclos Patrimonio Geologico Instituto Geologico y Minero de EspanaE-28003MadridSpain Departament d'Estratigrafia Paleontologia i Geociencies MarinesFacultat de GeologiaUniversitat de BarcelonaE-08071BarcelonaSpain UMR CNRS 7205 EntomologieMuseum National d'Histoire NaturelleF-75005ParisFrance

One new genus and five new species of the family Evaniidae are described from the Early Cretaceous （Albian） Spanish amber of Pefiacerrada-I （Province of Burgos）, San Just and Arroyo de la Pascueta （both in the Province of Teruel）： Cretevania alonsoi sp. nov., C. montoyai sp. nov., C. alcalai sp. nov., C. rubusensis sp. nov., and lberoevania roblesi gen. and sp. nov. Taxonomic changes include Cretevania pristina （Zhang and Zhang, 2000） comb. nov., C. exquisita （Zhang, Rasnitsyn, Wang and Zhang, 2007） comb. nov., C. vesca （Zhang, Rasnltsyn, Wang and Zhang, 2007） comb. nov., and C. cyrtocerca （Deans, 2004） comb. nov., as a result of the reinterpretation of the genera Procretevania and Eovernevania. The new well preserved specimens of the genus Cretevania, together with the characters shown by the type specimens of the synonymized genera, give new information about their anatomical characters of taxonomical importance, and the genus Cretevania Rasnitsyn, 1975 is re-diagnosed. The holotypes of the Russian species in amber have been revised. A cladistic analysis of fossil and extant groups of the superfamily Evanioidea is included. Cretevania had a wide palaeogeographic distribution, with the highest diversity known from Spain. The 13 known Cretevania species show a high interspecific variation mainly in wing characteristics, and a wide range of body and wing size.

关键词： Eovernevania Procretevania Cretevania lberoevania New taxa Early Cretaceous amber

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Review of the El Soplao Amber Outcrop,Early Cretaceous of Cantabria,Spain

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Acta Geologica Sinica(English Edition) 2010年第4期84卷 959-976页

作者： María NAJARRO Enrique PENALVER Ricardo PEREZ-DE LA FUENTE Jaime ORTEGA-BLANCO Cesar MENOR-SALVAN Eduardo BARRON Carmen SORIANO Idoia ROSALES Rafael LOPEZ DEL VALLE Francisco VELASCO Fernando TORNOS Véronique DAVIERO-GOMEZ Bernard GOMEZ xavier delclos Instituto Geologico y Minero de Espana E-28003MadridSpain Departament d'Estratigrafia Paleontologia i Geociencies MarinesFacultat de GeologiaUniversitat de BarcelonaE-08071BarcelonaSpain Centro de Astrobiologia(CSIC-INTA) E-28850Torrejon de ArdozSpain European Synchrotron Radiation Facilities F-38000 GrenobleFrance/Geosciences Rennes-Universite de Rennes 1F-35042 RennesFrance El Soplao S.L. Prao El CollaoE-39553CantabriaSpain Universidad del Pais Vasco Dpto.Mineralogia y PetrologiaE-48080 BilbaoSpain CNRS-UMR 5125 PEPS Universite Lyon 1GeodeF-69622 VilleurbanneFrance

El Soplao outcrop, an Early Cretaceous amber deposit recently discovered in northern Spain （Cantabria）, has been shown to be the largest site of amber with arthropod inclusions that has been found in Spain so far. Relevant data provided herein for biogeochemistry of the amber, palynology, taphonomy and arthropod bioinclusions complement those previously published. This set of data suggests at least two botanical sources for the amber of El Soplao deposit. The first （type A amber） strongly supports a source related to Cheirolepidiaceae, and the second （type B amber） shows non-specific conifer biomarkers. Comparison of molecular composition of type A amber with Frenelopsis leaves （Cheirolepidiaceae） strongly suggests a biochemical affinity and a common botanical origin. A preliminary palynological study indicates a regional high taxonomical diversity, mainly of pteridophyte spores and gymnosperm pollen grains. According to the preliminary palynological data, the region was inhabited by conifer forests adapted to a dry season under a subtropical climate. The abundant charcoalified wood associated with the amber in the same beds is evidence of paleofires that most likely promoted both the resin production and an intensive erosion of the litter, and subsequent great accumulation of amber plus plant cuticles. In addition, for the first time in the fossil record, charcoalified plant fibers as bioinclnsions in amber are reported. Other relevant taphonomic data are the exceptional presence of serpulids and bryozoans on the surfaces of some amber pieces indicating both a long exposure on marine or brackish-water and a mixed assemblage of amber. Lastly, new findings of insect bioiuclusions, some of them uncommon in the fossil record or showing remarkable adaptations, are reported. In conclusion, a documented scenario for the origin of the El Soplao amber outcrop is provided.

关键词： fossil resin chemotaxonomy paleobotany charcoal arthropod bioinclusions taphonomy EarlyAlbian

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