After the Upper Messinian Mediterranean Lago-Mare phase, at the end of the Messinian salinity crisis, the Mediterranean basin was characterized by a return to normal marine conditions starting with the Lower Pliocene (Zanclean). In this period, remarkably thick layers of calcareous pelitic sediments, very rich in planktonic foraminifers and nannofossils, were widely deposited in the Mediterranean basin. The calcareous pelitic deposits of Sicily (Trubi Formation), as well as in other Mediterranean regions, were deposited conformably on the pre-Pliocene substrate, which is mainly represented by Messinian evaporites or by the post-evaporitic Lago-Mare facies. We have analysed samples taken from the lower portion of the Trubi Formation (Zanclean), just above the Messinian facies, collected from Licodia Eubea and Villafranca Tirrena areas (eastern Sicily). Micropalaentological assemblages consist of benthic and planktonic foraminifers and a typical deep-water ostracod fauna. The microfossil association and the stratigraphy of the Messinian-Pliocene transitional layers, supported by calcareous nannoplankton data, demonstrate not only rapid sea-level rise in this sector of the Mediterranean region, but also that this event, occurred without producing erosional features, unlike at other sites (e.g., Strait of Gibraltar).
{"title":"Full restoration of marine conditions after the late Messinian Mediterranean Lago-Mare phase in Licodia Eubea and Villafranca Tirrena areas (east Sicily)","authors":"F. Sciuto, A. Baldanza","doi":"10.4267/2042/70760","DOIUrl":"https://doi.org/10.4267/2042/70760","url":null,"abstract":"After the Upper Messinian Mediterranean Lago-Mare phase, at the end of the Messinian salinity crisis, the Mediterranean basin was characterized by a return to normal marine conditions starting with the Lower Pliocene (Zanclean). In this period, remarkably thick layers of calcareous pelitic sediments, very rich in planktonic foraminifers and nannofossils, were widely deposited in the Mediterranean basin. The calcareous pelitic deposits of Sicily (Trubi Formation), as well as in other Mediterranean regions, were deposited conformably on the pre-Pliocene substrate, which is mainly represented by Messinian evaporites or by the post-evaporitic Lago-Mare facies. We have analysed samples taken from the lower portion of the Trubi Formation (Zanclean), just above the Messinian facies, collected from Licodia Eubea and Villafranca Tirrena areas (eastern Sicily). Micropalaentological assemblages consist of benthic and planktonic foraminifers and a typical deep-water ostracod fauna. The microfossil association and the stratigraphy of the Messinian-Pliocene transitional layers, supported by calcareous nannoplankton data, demonstrate not only rapid sea-level rise in this sector of the Mediterranean region, but also that this event, occurred without producing erosional features, unlike at other sites (e.g., Strait of Gibraltar).","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"20 1","pages":"107-123"},"PeriodicalIF":1.4,"publicationDate":"2020-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47598411","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}
A. Collareta, Andrea Di Cencio, R. Ricci, G. Bianucci
The extinct family Squalodontidae consists of heterodont, medium-sized odontocetes, featuring a long rostrum that houses large, procumbent incisors and heavily ornamented postcanine teeth carrying accessory denticles, hence their vernacular name, "shark-toothed dolphins". These longirostrine toothed whales are often seen as bridging the anatomical gap between archaic Oligocene odontocetes and their late Miocene to Holocene relatives. Possibly among the major marine predators of their time, the shark-toothed dolphins are important components of several lower Miocene marine-mammal assemblages from the North Atlantic and Mediterranean/Paratethysian realms. In the present work, a partial skull of Squalodontidae is described from the strata of the Bolognano Formation cropping out in the northeastern sector of the Montagna della Majella massif (Abruzzo, central Italy), which has previously yielded a rich lower Miocene marine-vertebrate assemblage, including eleven taxa of elasmobranchs as well as subordinate teleosts and very fragmentary remains of marine reptiles and mammals. The specimen consists of the anterodorsal portion of a rostrum, preserving parts of both premaxillae and left maxilla, and the anteriormost seven upper left teeth. This partial skull is here identified as belonging to the genus Squalodon, whose presence in the Montagna della Majella vertebrate assemblage had already been tentatively proposed on the basis of two fragmentary teeth. The paleontological significance of this find is discussed in the broader framework of the Euromediterranean record of Squalodon.
已灭绝的角鲨科由异齿、中等大小的牙冠组成，其特征是有一个长的讲坛，上面有大的、平躺的门牙和带有附属小齿的装饰华丽的后犬齿，因此它们的当地名称为“鲨齿海豚”。这些长喙露脊鲸通常被视为弥合了古渐新世齿鲸与其中新世晚期至全新世亲属之间的解剖学差距。鲨齿海豚可能是他们那个时代的主要海洋捕食者之一，是北大西洋和地中海/副特提斯地区几个下中新世海洋哺乳动物群落的重要组成部分。在本工作中，描述了角鲨科的一个部分头骨，该头骨来自意大利中部阿布鲁佐Montagna della Majella地块东北部的Bologano组地层，该地层此前已形成丰富的下中新世海洋脊椎动物组合，包括蓝鳃类的11个分类群以及次级硬骨目和海洋爬行动物和哺乳动物的非常零碎的遗骸。标本由喙的前背部分组成，保留了上颌骨前和左上颌骨的部分，以及最前面的七颗左上齿。这个部分头骨在这里被确定为属于Squalodon属，其在Montagna della Majella脊椎动物组合中的存在已经根据两颗破碎的牙齿初步提出。这一发现的古生物学意义在Squalodon的欧洲-地中海记录的更广泛框架中进行了讨论。
{"title":"The shark-toothed dolphin Squalodon (Cetacea: Odontoceti) from the remarkable Montagna della Majella marine vertebrate assemblage (Bolognano Formation, central Italy)","authors":"A. Collareta, Andrea Di Cencio, R. Ricci, G. Bianucci","doi":"10.4267/2042/70716","DOIUrl":"https://doi.org/10.4267/2042/70716","url":null,"abstract":"The extinct family Squalodontidae consists of heterodont, medium-sized odontocetes, featuring a long rostrum that houses large, procumbent incisors and heavily ornamented postcanine teeth carrying accessory denticles, hence their vernacular name, \"shark-toothed dolphins\". These longirostrine toothed whales are often seen as bridging the anatomical gap between archaic Oligocene odontocetes and their late Miocene to Holocene relatives. Possibly among the major marine predators of their time, the shark-toothed dolphins are important components of several lower Miocene marine-mammal assemblages from the North Atlantic and Mediterranean/Paratethysian realms. In the present work, a partial skull of Squalodontidae is described from the strata of the Bolognano Formation cropping out in the northeastern sector of the Montagna della Majella massif (Abruzzo, central Italy), which has previously yielded a rich lower Miocene marine-vertebrate assemblage, including eleven taxa of elasmobranchs as well as subordinate teleosts and very fragmentary remains of marine reptiles and mammals. The specimen consists of the anterodorsal portion of a rostrum, preserving parts of both premaxillae and left maxilla, and the anteriormost seven upper left teeth. This partial skull is here identified as belonging to the genus Squalodon, whose presence in the Montagna della Majella vertebrate assemblage had already been tentatively proposed on the basis of two fragmentary teeth. The paleontological significance of this find is discussed in the broader framework of the Euromediterranean record of Squalodon.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"20 1","pages":"19-28"},"PeriodicalIF":1.4,"publicationDate":"2020-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47389349","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}
This paper presents a new discovery of the echinoid species Phyllobrissus humilis (Gauthier, 1875) from the Albian age Riachuelo Formation of the Sergipe-Alagoas Basin. The only specimen obtained in the Maruim 1 outcrop expresses the main species characteristics. Paleoecological notes and a dichotomous key are presented to facilitate the identification of the cassiduloid species from the Cretaceous of Sergipe-Alagoas Basin.
{"title":"A new Cassiduloid (Echinodermata, Echinoidea) in the Albian of the Sergipe-Alagoas basin, Brazil","authors":"C. L. C. Manso","doi":"10.4267/2042/70719","DOIUrl":"https://doi.org/10.4267/2042/70719","url":null,"abstract":"This paper presents a new discovery of the echinoid species Phyllobrissus humilis (Gauthier, 1875) from the Albian age Riachuelo Formation of the Sergipe-Alagoas Basin. The only specimen obtained in the Maruim 1 outcrop expresses the main species characteristics. Paleoecological notes and a dichotomous key are presented to facilitate the identification of the cassiduloid species from the Cretaceous of Sergipe-Alagoas Basin.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"20 1","pages":"29-35"},"PeriodicalIF":1.4,"publicationDate":"2020-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46412930","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}
F. Amédro, F. Robaszynski, H. Chatelier, Patrice Ferchaud, Bertrand Matrion
Dans le sud du Bassin de Paris, le long des vallees de la Loire et du Cher, le Tuffeau Jaune de Touraine a ete traditionnellement date du Turonien superieur par la presence de tres rares Romaniceras deverianum (Orbigny, 1841). Toutefois, les quelques metres de tempestites a la base de la formation n'ont jamais livre d'ammonites. Aujourd'hui, juste au sud du Turonien stratotypique, en Touraine meridionale, la recolte de plus de 150 ammonites a la base du Tuffeau Jaune de Touraine ainsi que dans le sommet du Tuffeau de Bourre sous-jacent apporte des precisions significatives sur l'âge des formations. En realite, les premiers metres du Tuffeau Jaune de Touraine appartiennent encore a la zone a Romaniceras ornatissimum (Tm 3) datant le Turonien moyen. La decouverte dans cet intervalle de Romaniceras (Yubariceras) ornatissimum (Stoliczka, 1864) associe a la nouvelle espece Romaniceras (R.) marigniacum Amedro & Châtelier sp. nov. indique qu'on se trouve dans la partie elevee de la zone a R. ornatissimum. D'autres especes sont presentes dans ce biohorizon : outre Romaniceras (R.) marigniacum et Romaniceras (Yubariceras) ornatissimum, on trouve Masiaposites cf. kennedyi Amedro & Devalque, 2014, Collignoniceras woollgari regulare (Haas, 1946), C. turoniense (Sornay, 1951) et Collignoniceras vigennum Amedro & Châtelier sp. nov. Le sommet du Tuffeau de Bourre a quant a lui livre une cinquantaine d'ammonites avec une association legerement differente de celle connue dans la localite type de Bourre-Montrichard dans la vallee du Cher. Le materiel recolte pres de la confluence Vienne-Creuse comprend : Lewesiceras peramplum (Mantell, 1822), Romaniceras (Y.) ornatissimum (Stoliczka, 1864), Collignoniceras woollgari regulare (Haas, 1946), C. canthus (Orbigny, 1856) et C. turoniense (Sornay, 1951). L'espece Collignoniceras papale (Orbigny, 1841), qui represente un tiers des recoltes a Bourre, est apparemment absente, tandis que trois nouvelles especes du meme genre sont identifiees : C. hourqueigi Amedro & Châtelier sp. nov., C. badilleti Amedro & Châtelier sp. nov. et Collignoniceras sp. A.
{"title":"Identification d'un biohorizon d'ammonites à Romaniceras (Romaniceras) marigniacum sp. nov. (Turonien moyen) à la base du Tuffeau Jaune de Touraine (France)","authors":"F. Amédro, F. Robaszynski, H. Chatelier, Patrice Ferchaud, Bertrand Matrion","doi":"10.4267/2042/70720","DOIUrl":"https://doi.org/10.4267/2042/70720","url":null,"abstract":"Dans le sud du Bassin de Paris, le long des vallees de la Loire et du Cher, le Tuffeau Jaune de Touraine a ete traditionnellement date du Turonien superieur par la presence de tres rares Romaniceras deverianum (Orbigny, 1841). Toutefois, les quelques metres de tempestites a la base de la formation n'ont jamais livre d'ammonites. Aujourd'hui, juste au sud du Turonien stratotypique, en Touraine meridionale, la recolte de plus de 150 ammonites a la base du Tuffeau Jaune de Touraine ainsi que dans le sommet du Tuffeau de Bourre sous-jacent apporte des precisions significatives sur l'âge des formations. En realite, les premiers metres du Tuffeau Jaune de Touraine appartiennent encore a la zone a Romaniceras ornatissimum (Tm 3) datant le Turonien moyen. La decouverte dans cet intervalle de Romaniceras (Yubariceras) ornatissimum (Stoliczka, 1864) associe a la nouvelle espece Romaniceras (R.) marigniacum Amedro & Châtelier sp. nov. indique qu'on se trouve dans la partie elevee de la zone a R. ornatissimum. D'autres especes sont presentes dans ce biohorizon : outre Romaniceras (R.) marigniacum et Romaniceras (Yubariceras) ornatissimum, on trouve Masiaposites cf. kennedyi Amedro & Devalque, 2014, Collignoniceras woollgari regulare (Haas, 1946), C. turoniense (Sornay, 1951) et Collignoniceras vigennum Amedro & Châtelier sp. nov. Le sommet du Tuffeau de Bourre a quant a lui livre une cinquantaine d'ammonites avec une association legerement differente de celle connue dans la localite type de Bourre-Montrichard dans la vallee du Cher. Le materiel recolte pres de la confluence Vienne-Creuse comprend : Lewesiceras peramplum (Mantell, 1822), Romaniceras (Y.) ornatissimum (Stoliczka, 1864), Collignoniceras woollgari regulare (Haas, 1946), C. canthus (Orbigny, 1856) et C. turoniense (Sornay, 1951). L'espece Collignoniceras papale (Orbigny, 1841), qui represente un tiers des recoltes a Bourre, est apparemment absente, tandis que trois nouvelles especes du meme genre sont identifiees : C. hourqueigi Amedro & Châtelier sp. nov., C. badilleti Amedro & Châtelier sp. nov. et Collignoniceras sp. A.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"20 1","pages":"37-89"},"PeriodicalIF":1.4,"publicationDate":"2020-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43595680","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}
The Tre Maroua site in SE France was recently selected by the Berriasian Working Group (BWG) of the International Subcommission on Cretaceous Stratigraphy (ISCS) as the candidate locality for the reference section of the Berriasian Global Boundary Stratotype Point (GSSP). However, on the basis of our preliminary investigation at this site and also from field observations over a larger area, this candidate section is paleogeographically located on a deep-water slope riddled with successive erosional surfaces, stratigraphic hiatuses and breccias. It does not meet at least four of the five "geological requirements for a GSSP". Accordingly, in our opinion, its candidacy must be definitely precluded.
{"title":"A critical look at Tré Maroua (Le Saix, Hautes-Alpes, France), the Berriasian GSSP candidate section","authors":"B. Granier, S. Ferry, M. Benzaggagh","doi":"10.4267/2042/70714","DOIUrl":"https://doi.org/10.4267/2042/70714","url":null,"abstract":"The Tre Maroua site in SE France was recently selected by the Berriasian Working Group (BWG) of the International Subcommission on Cretaceous Stratigraphy (ISCS) as the candidate locality for the reference section of the Berriasian Global Boundary Stratotype Point (GSSP). However, on the basis of our preliminary investigation at this site and also from field observations over a larger area, this candidate section is paleogeographically located on a deep-water slope riddled with successive erosional surfaces, stratigraphic hiatuses and breccias. It does not meet at least four of the five \"geological requirements for a GSSP\". Accordingly, in our opinion, its candidacy must be definitely precluded.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"20 1","pages":"1-17"},"PeriodicalIF":1.4,"publicationDate":"2020-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45179886","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}
Involutina hungarica (Sido, 1952) is reported from Albian strata of Texas (U.S.A.). Earlier records in the scientific literature, where this foraminifer commonly appears under the label "Hensonina lenticularis (Henson, 1947)", are reevaluated. Although it is mostly cited from Albian strata, its first occurrence could be Aptian.
{"title":"Discussion on some previous records of Involutina hungarica (Sidó, 1952). Revision of the Jesse Harlan Johnson Collection. Part 6","authors":"B. Granier","doi":"10.4267/2042/70638","DOIUrl":"https://doi.org/10.4267/2042/70638","url":null,"abstract":"Involutina hungarica (Sido, 1952) is reported from Albian strata of Texas (U.S.A.). Earlier records in the scientific literature, where this foraminifer commonly appears under the label \"Hensonina lenticularis (Henson, 1947)\", are reevaluated. Although it is mostly cited from Albian strata, its first occurrence could be Aptian.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"41 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75792233","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}
Lingulides from Lower Permian of Brazil (24% substrates) showed signs of bioerosion in form of multiple small shallow pits that resemble incomplete Oichnus paraboloides borings. A single lingulide valve showed a centrally located large circular predatory Oichnus simplex boring. Several lingulide shells (c. 21%) show small Arachnostega traces in their interior. The diameter of Arachnostega burrows is relatively constant. These burrows are more similar to juvenile stages of Arachnostega gastrochaena and do not form well-developed meshwork of tunnels. This is the first record of Arachnostega from the interior of lingulide shells and indicates that even very small lingulide shells were suitable substrates for cryptic organisms.
{"title":"Ichnofossils associated with lingulide shells from the Lower Permian of Brazil","authors":"O. Vinn, C. Zabini, L. Weinschütz","doi":"10.4267/2042/70636","DOIUrl":"https://doi.org/10.4267/2042/70636","url":null,"abstract":"Lingulides from Lower Permian of Brazil (24% substrates) showed signs of bioerosion in form of multiple small shallow pits that resemble incomplete Oichnus paraboloides borings. A single lingulide valve showed a centrally located large circular predatory Oichnus simplex boring. Several lingulide shells (c. 21%) show small Arachnostega traces in their interior. The diameter of Arachnostega burrows is relatively constant. These burrows are more similar to juvenile stages of Arachnostega gastrochaena and do not form well-developed meshwork of tunnels. This is the first record of Arachnostega from the interior of lingulide shells and indicates that even very small lingulide shells were suitable substrates for cryptic organisms.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"os-43 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87237068","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}
Numerous and generally well-preserved examples of the intergrowth Rugosa-Bryozoa from the Upper Pragian and Lower Emsian of the Armorican Massif (Châteaulin and Laval synclinoria), France, and from the Upper Emsian of the Ougarta Mountains, Erg Djemel, Algeria, are described. In the Armorican Massif, the corallites of a rugosan Tryplasmatidae? are intergrown with Ceramoporidae bryozoan close to Crepipora, exceptionally with an unidentified Fistuliporidae (likely a new genus), whereas in Ougarta the coral is not identifiable and is associated with a Fistuliporidae assigned to Fistulipora. Although mainly left in open nomenclature, the material is fully described (structure and microstructure) and illustrated (calcitic skeleton and natural moulds) for the first time. In addition, the presence of Ceramoporidae in the Lower Devonian is clearly established. The evaluation of the association is briefly discussed and a mutualistic relationship supported.
{"title":"New data on the intergrowth of Rugosa-Bryozoa in the Lower Devonian of North Gondwana","authors":"Y. Plusquellec, F. P. Bigey","doi":"10.4267/2042/70538","DOIUrl":"https://doi.org/10.4267/2042/70538","url":null,"abstract":"Numerous and generally well-preserved examples of the intergrowth Rugosa-Bryozoa from the Upper Pragian and Lower Emsian of the Armorican Massif (Châteaulin and Laval synclinoria), France, and from the Upper Emsian of the Ougarta Mountains, Erg Djemel, Algeria, are described. In the Armorican Massif, the corallites of a rugosan Tryplasmatidae? are intergrown with Ceramoporidae bryozoan close to Crepipora, exceptionally with an unidentified Fistuliporidae (likely a new genus), whereas in Ougarta the coral is not identifiable and is associated with a Fistuliporidae assigned to Fistulipora. Although mainly left in open nomenclature, the material is fully described (structure and microstructure) and illustrated (calcitic skeleton and natural moulds) for the first time. In addition, the presence of Ceramoporidae in the Lower Devonian is clearly established. The evaluation of the association is briefly discussed and a mutualistic relationship supported.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"62 1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77989806","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}
S. O. Martha, K. Matsuyama, J. Scholz, P. Taylor, G. Hillmer
The bryozoan collection of Prof. Dr Ehrhard Voigt (1905-2004) at the Senckenberg Research Institute in Frankfurt am Main, Germany is a world-renowned collection of great scientific value. It is the world's largest collection of fossil bryozoans from the Upper Cretaceous and Paleocene and a unique archive documenting the evolution of this phylum of marine invertebrates during this time interval in the Boreal Chalk Sea that extended from the British Isles to the Aral Sea in Central Asia. The Voigt Collection contains over 300,000 specimens and was relocated to the Senckenberg Institute in 2005 according to the bequest of Ehrhard Voigt. As a result of a DFG-funded project, we present here a three-part type catalogue of the holotypes and neotypes of 256 bryozoan species in the Voigt Collection, of which this is Part 1. In total over the three parts, 247 species are re-illustrated but the name-bearing type specimens of 20 species are missing and no material could be found for 9 species. Two species, described as ctenostome bryozoans by Ehrhard Voigt, are questionable, while a further three 'ctenostome' species and one 'ctenostome' genus are considered as ichnotaxa.
{"title":"The bryozoan collection of Prof. Dr Ehrhard Voigt (1905–2004) at the Senckenberg Institute in Frankfurt. Part 1 - Introduction and Cyclostomata","authors":"S. O. Martha, K. Matsuyama, J. Scholz, P. Taylor, G. Hillmer","doi":"10.4267/2042/70493","DOIUrl":"https://doi.org/10.4267/2042/70493","url":null,"abstract":"The bryozoan collection of Prof. Dr Ehrhard Voigt (1905-2004) at the Senckenberg Research Institute in Frankfurt am Main, Germany is a world-renowned collection of great scientific value. It is the world's largest collection of fossil bryozoans from the Upper Cretaceous and Paleocene and a unique archive documenting the evolution of this phylum of marine invertebrates during this time interval in the Boreal Chalk Sea that extended from the British Isles to the Aral Sea in Central Asia. The Voigt Collection contains over 300,000 specimens and was relocated to the Senckenberg Institute in 2005 according to the bequest of Ehrhard Voigt. As a result of a DFG-funded project, we present here a three-part type catalogue of the holotypes and neotypes of 256 bryozoan species in the Voigt Collection, of which this is Part 1. In total over the three parts, 247 species are re-illustrated but the name-bearing type specimens of 20 species are missing and no material could be found for 9 species. Two species, described as ctenostome bryozoans by Ehrhard Voigt, are questionable, while a further three 'ctenostome' species and one 'ctenostome' genus are considered as ichnotaxa.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"168 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80567631","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}
The upper Pleistocene deposit of Arenal de son Servera is reviewed using data from earlier works and new considerations based on its stratigraphy and taphonomical aspects of the fossils. In the present study, five different kinds of facies are identified: [1] palaeosols with pebbles from the Miocene basement, [2] aeolianites, [3] foreshore deposits with thermophilous molluscan fossil fauna, [4] palaeosols resulting from the pedogenesis of the beach units, and [5] bioclastic channelled deposits eroding the underlaying units. The detailed taphonomical analysis revealed that the fossils enclosed in these rocks remained on the sea bottom for a significant amount of time, but they were not bioeroded, perhaps because a submerged sand bar repeatedly buried and exhumed them. In addition, the fact that Persististrombus latus shells are in their position of maximum stability allows to infer that they were washed up on the shore during moderately energetic events, possibly comparable to present-day ordinary storms. These two last points could be of interest to the field of coastal management, as they provide insight on the scope of physical changes these systems could undergo in the present warming of the Mediterranean.
利用前人的研究资料，结合化石地层学和地层学方面的新认识，对Arenal de son Servera上更新世沉积进行了评述。在本研究中，确定了五种不同的相:[1]中新世基底的鹅卵石古土壤，[2]风成岩，[3]嗜热软体动物化石动物群的前滩沉积，[4]由海滩单元的成土作用形成的古土壤，[5]侵蚀下垫单元的生物碎屑河道沉积。详细的地文学分析表明，包裹在这些岩石中的化石在海底停留了相当长的时间，但它们没有受到生物侵蚀，这可能是因为水下的沙洲反复掩埋和挖掘了它们。此外，长尾螺壳处于最稳定的位置，这一事实可以推断它们是在中等强度的事件中被冲上海岸的，可能与现在的普通风暴相当。海岸带管理领域可能会对最后两点感兴趣，因为它们提供了对这些系统在目前地中海变暖中可能经历的物理变化范围的见解。
{"title":"Historical review together with stratigraphical and taphonomical considerations on the upper Pleistocene deposit of Arenal de son Servera (Mallorca, Balearic Islands)","authors":"R. Matamales‐Andreu","doi":"10.4267/2042/70497","DOIUrl":"https://doi.org/10.4267/2042/70497","url":null,"abstract":"The upper Pleistocene deposit of Arenal de son Servera is reviewed using data from earlier works and new considerations based on its stratigraphy and taphonomical aspects of the fossils. In the present study, five different kinds of facies are identified: [1] palaeosols with pebbles from the Miocene basement, [2] aeolianites, [3] foreshore deposits with thermophilous molluscan fossil fauna, [4] palaeosols resulting from the pedogenesis of the beach units, and [5] bioclastic channelled deposits eroding the underlaying units. The detailed taphonomical analysis revealed that the fossils enclosed in these rocks remained on the sea bottom for a significant amount of time, but they were not bioeroded, perhaps because a submerged sand bar repeatedly buried and exhumed them. In addition, the fact that Persististrombus latus shells are in their position of maximum stability allows to infer that they were washed up on the shore during moderately energetic events, possibly comparable to present-day ordinary storms. These two last points could be of interest to the field of coastal management, as they provide insight on the scope of physical changes these systems could undergo in the present warming of the Mediterranean.","PeriodicalId":55273,"journal":{"name":"Carnets De Geologie","volume":"24 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84502754","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}
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