Fossil Record最新文献

{"title":"A new species of baenid turtle from the Early Cretaceous Lakota Formation of South Dakota","authors":"W. Joyce, Y. Rollot, R. Cifelli","doi":"10.5194/fr-23-1-2020","DOIUrl":"https://doi.org/10.5194/fr-23-1-2020","url":null,"abstract":"Abstract. Baenidae is a clade of paracryptodiran turtles known from\u0000the late Early Cretaceous to Eocene of North America. The proposed\u0000sister-group relationship of Baenidae to Pleurosternidae, a group of turtles\u0000known from sediments dated as early as the Late Jurassic, suggests a ghost\u0000lineage that crosses the early Early Cretaceous. We here document a new\u0000species of paracryptodiran turtle, Lakotemys australodakotensis gen. and sp. nov., from the Early\u0000Cretaceous (Berriasian to Valanginian) Lakota Formation of South Dakota\u0000based on a poorly preserved skull and two partial shells. Lakotemys australodakotensis is most readily\u0000distinguished from all other named Late Jurassic to Early Cretaceous\u0000paracryptodires by having a broad, baenid-like skull with expanded\u0000triturating surfaces and a finely textured shell with a large suprapygal I\u0000that laterally contacts peripheral X and XI and an irregularly shaped\u0000vertebral V that does not lap onto neural VIII and that forms two\u0000anterolateral processes that partially separate the vertebral IV from\u0000contacting pleural IV. A phylogenetic analysis suggests that Lakotemys australodakotensis is a baenid,\u0000thereby partially closing the previously noted gap in the fossil record.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"23 1","pages":"1-13"},"PeriodicalIF":1.4,"publicationDate":"2020-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42650984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the first Silis Charpentier, 1825 from Baltic amber (Coleoptera, Cantharidae)","authors":"F. Parisi, F. Fanti","doi":"10.5194/fr-22-119-2019","DOIUrl":"https://doi.org/10.5194/fr-22-119-2019","url":null,"abstract":"Abstract. Only in recent years have new genera and species of the subfamily\u0000Silinae Mulsant, 1862 been described as inclusions in amber. However,\u0000no representative of the genus Silis Charpentier, 1825 had been described from\u0000Baltic amber, even if few specimens were already known at the generic level.\u0000Silis lombardii sp. nov. is entirely dark brown and shows (as usual for the genus) the\u0000two characteristic lobes in the sides of pronotum, elongated elytra, and a\u0000basal small tooth only on the anterior claws. The Eocene findings show that\u0000the subfamily is of ancient origin and that at least in the Eocene it was\u0000much more abundant than today in the same territories, where only two\u0000species are known. (urn:lsid:zoobank.org:act:76887127-3D24-41DA-86CC-7DCAB40DC3B7)","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"22 1","pages":"119-123"},"PeriodicalIF":1.4,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46455967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The second fossil species of Cathartosilvanus (Coleoptera: Cucujoidea: Silvanidae) from Eocene Baltic amber","authors":"V. Alekseev, A. Bukejs, R. McKellar","doi":"10.5194/fr-22-111-2019","DOIUrl":"https://doi.org/10.5194/fr-22-111-2019","url":null,"abstract":"Abstract. A new fossil species of the silvanid flat bark beetle genus\u0000Cathartosilvanus Grouvelle is described and illustrated from Baltic amber. Cathartosilvanus siteiterralevis sp. nov. differs\u0000from recent and fossil congeners in the distinct, sharp denticle found along\u0000its posterior pronotal angle. The phenomenon of specific body parts becoming\u0000disconnected, and the compression of specimens is briefly discussed and\u0000interpreted in the context of amber taphonomy. The specimen under study\u0000appears to be an uncommon case of a weakly sclerotized beetle imago becoming\u0000entrapped in resin shortly after moulting.\u0000","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41399799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microanatomy and growth of the mesosaurs Stereosternum tumidum and Brazilosaurus sanpauloensis (Reptilia, Parareptilia)","authors":"N. Klein, Antoine Verrière, Heitor Sartorelli, T. Wintrich, J. Fröbisch","doi":"10.5194/fr-22-91-2019","DOIUrl":"https://doi.org/10.5194/fr-22-91-2019","url":null,"abstract":"Abstract. Histology and microanatomy of vertebrae, ribs, haemal\u0000arch, and humeri and femora of 10 individuals of Stereosternum and two dorsal ribs of\u00001 individual of Brazilosaurus were studied. All individuals had achieved a body length\u0000of 50 cm (equal to 65 % of the maximum known body length) or larger. All sampled\u0000bones are highly osteosclerotic due to the reduction of medullary cavities\u0000and the filling of medullary regions by endosteal bone. Calcified cartilage\u0000occurs – if at all – only locally in small clusters in the medullary\u0000regions of midshaft and in higher amounts only in non-midshaft sections of\u0000long bones and towards the medio-distal rib shaft, respectively. The primary\u0000bone tissue consists of highly organized parallel-fibred tissue and/or\u0000lamellar tissue, which is in most samples relatively lightly vascularized or\u0000even avascular. If present, vascular canals are mainly longitudinally\u0000oriented; some show a radial orientation. Simple vascular canals as well as\u0000primary osteons occur. Some of the latter are secondarily altered, i.e. widened. Remodelling of the periosteal cortex is only documented by few\u0000scattered erosion cavities and secondary osteons. The tissue is regularly\u0000stratified by lines of arrested growth (LAGs), which usually appear as double or multiple rest lines,\u0000indicating strong dependence on exogenous and endogenous factors. Because of\u0000the inhibition of periosteal remodelling the growth record is complete and\u0000no inner cycles are lost. Individuals of Stereosternum show a poor correlation of body\u0000size and number of growth marks, which might be the result of developmental\u0000plasticity. Brazilosaurus shows a highly organized, avascular lamellar tissue and a high\u0000number of regularly deposited rest lines throughout the cortex of the ribs.\u0000The medullary region in the ribs of Brazilosaurus is distinctly larger when compared to ribs\u0000of Stereosternum. However, strong osteosclerosis is obvious in both taxa, pointing to a\u0000high degree of aquatic adaption. Ribs of Stereosternum, Brazilosaurus, and Mesosaurus are clearly distinguishable\u0000from each other by the distribution of the periosteal and endosteal\u0000territory. Furthermore, Brazilosaurus differs in its growth pattern (i.e. spacing of rest\u0000lines) when compared to Stereosternum and Mesosaurus.\u0000","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42623876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The new encrusting microproblematicum Circumpodium enigmaticum and its attachment trace Circumpodichnus serialis from the Middle Jurassic of Normandy (France)","authors":"M. Wisshak, Liane Hüne","doi":"10.5194/fr-22-77-2019","DOIUrl":"https://doi.org/10.5194/fr-22-77-2019","url":null,"abstract":"Abstract. A single specimen of an enigmatic new attachment etching,\u0000together with an unknown calcareous encruster partly preserved in situ, has\u0000been identified on a belemnite rostrum from the Marnes de Dives Formation\u0000(Callovian, Middle Jurassic) of the Falaises des Vaches Noires in Normandy,\u0000France. The trace fossil, here established as the new ichnotaxon\u0000Circumpodichnus serialis igen. et isp. n., is a uniserial arrangement of very shallow depressions,\u0000oval to fusiform in outline, with peripheral pouches and central pits. The trace maker has a morphology unlike any other known calcareous epibiont,\u0000fossil or recent, and is consequently described as the new\u0000microproblematicum Circumpodium enigmaticum gen. et sp. n. Its calcitic skeleton is composed of a\u0000chain of segments with perforate basal and lateral walls, anchored to the\u0000attachment trace in the substratum by vertical protrusions in the centre and\u0000feet-like protrusions in the periphery. The hypothetical upper wall of the\u0000segments was either organic-walled and has decayed or it was calcitic and\u0000has been abraded. Based on morphological criteria and the capacity to bioerode, C. enigmaticum can best be\u0000compared to encrusting bryozoans and foraminiferans. Candidate bryozoans are\u0000aberrant arachnidiid ctenostomes, early cheilostomes, or stomatoporid\u0000cyclostomes. Among the foraminiferans, webbinellid or ramulinid\u0000polymorphinids are closest in their characters. In addition, tintinnid or\u0000folliculinid ciliophorans are considered as an alternative interpretation,\u0000and similarities to the Palaeozoic microproblematicum Allonema are discussed.\u0000","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47966443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dignoptinus, a new genus for fossil Dignomus regiomontanus Alekseev from Eocene Baltic amber, and new status for Bruchoptinus Reitter and Pseudoptinus Reitter (Coleoptera: Ptinidae)","authors":"V. Alekseev, A. Bukejs, X. Belles","doi":"10.5194/fr-22-65-2019","DOIUrl":"https://doi.org/10.5194/fr-22-65-2019","url":null,"abstract":"Abstract. The holotype of Dignomus regiomontanus Alekseev, 2014, from the Eocene Baltic amber\u0000(Tertiary, Paleogene), is re-examined and re-described. Dignoptinus gen. nov. is\u0000proposed to place this species. Bruchoptinus Reitter, 1884, and Pseudoptinus Reitter, 1884, described\u0000as subgenera of Ptinus Linnaeus, 1767, are the closest relatives of the new fossil\u0000genus. These two subgenera are proposed as independent genera:\u0000Bruchoptinus Reitter, 1884 stat. nov. and Pseudoptinus Reitter, 1884 stat. nov. Forty-four new\u0000combinations for the species of these genera are proposed.\u0000","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43685712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An insect wing discovered in the Early Permian Taiyuan Formation (Shanxi Province, China)","authors":"Jin Wang, O. Béthoux, D. Ren, Yingying Cui","doi":"10.5194/fr-22-73-2019","DOIUrl":"https://doi.org/10.5194/fr-22-73-2019","url":null,"abstract":"Abstract. The first discovery of an insect wing from the Taiyuan\u0000Formation, near Yangquan City, Shanxi Province, China, is described. The\u0000combination of its wing venation characters makes it difficult to assign\u0000it to any known major Paleozoic group. The comparison is made among the\u0000new material, stem-Orthoptera species, and “fossil Grylloblattodea”. Further\u0000investigation on fossil insects from this locality is needed.\u0000","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46945887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Presence of the Jehol Biota turtle Ordosemys liaoxiensis in the Early Cretaceous Hengtongshan Formation of southern Jilin Province, China","authors":"Chang-Fu Zhou, Wenhao Wu, M. Rabi","doi":"10.5194/fr-22-57-2019","DOIUrl":"https://doi.org/10.5194/fr-22-57-2019","url":null,"abstract":"Abstract. Recently, a vertebrate assemblage of the Jehol Biota has been reported from\u0000the Early Cretaceous Hengtongshan Formation of Xingling Town, Meihekou City,\u0000Jilin Province, China. It is dominated by the fishes Lycoptera and Sinamia and the sinemydid\u0000turtle Ordosemys. Here, we describe the turtle specimens and referral to Ordosemys liaoxiensis, otherwise\u0000known from the older Yixian Formation of the Jehol Biota. It is characterized\u0000by a subcircular shell, wide vertebral scales, well-developed plastral\u0000fenestrae, and a major contribution from the xiphiplastra to enclose the\u0000hypo-xiphiplastral fenestra. As the first Mesozoic turtle of Jilin Province,\u0000this record represents the first tetrapod to indicate the presence of the\u0000Jehol Biota in the region. Given the geographic and temporal distance from\u0000the Yixian Formation, future collections from the Hengtongshan Formation\u0000have good potential for evaluating spatiotemporal patterns of the Jehol\u0000Biota.\u0000","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48867982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new bizarre dysoneurid species (Insecta, Trichoptera) in Burmese amber","authors":"W. Wichard, C. Neumann","doi":"10.5194/fr-22-51-2019","DOIUrl":"https://doi.org/10.5194/fr-22-51-2019","url":null,"abstract":"Abstract. We describe an extinct caddisfly species, Cretapsyche palpinova sp. nov., from\u0000mid-Cretaceous Burmese amber. The species belongs to the extinct family\u0000Dysoneuridae within the superfamily Sericostomatoidea. The family includes\u0000some species with unusual maxillary palps. Cretapsyche palpinova sp. nov. is characterized by\u0000five-segmented maxillary palps, the second segment being the longest, and the third segment bearing an unusual pin-shaped appendage.\u0000","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45624015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Groehnius, a new genus of Eugnomini (Coleoptera: Curculionidae) from Eocene Baltic amber","authors":"A. Bukejs, A. Legalov","doi":"10.5194/FR-22-45-2019","DOIUrl":"https://doi.org/10.5194/FR-22-45-2019","url":null,"abstract":"Abstract. A new weevil, Groehnius electrum Bukejs and Legalov, gen. et sp. nov. (Coleoptera: Curculionidae: Curculioninae), is described from Eocene Baltic amber. This new genus is similar to the genus Archaeoeugnomus Legalov, 2016 from Baltic amber but differs in the femora without ventral teeth, and the scape not reaching the anterior margin of the eye. It is the second record of the tribe Eugnomini in the Eocene.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43738539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}