Swiss Journal of Palaeontology最新文献_第3页

The marine conservation deposits of Monte San Giorgio (Switzerland, Italy): the prototype of Triassic black shale Lagerstätten 圣乔治山（瑞士，意大利）的海洋保护矿床：三叠纪黑色页岩 Lagerstätten 的原型

IF 3 2区地球科学

Swiss Journal of Palaeontology Pub Date : 2024-03-04 DOI: 10.1186/s13358-024-00308-7

Christian Klug, Stephan N. F. Spiekman, Dylan Bastiaans, Beat Scheffold, Torsten M. Scheyer

{"title":"The marine conservation deposits of Monte San Giorgio (Switzerland, Italy): the prototype of Triassic black shale Lagerstätten","authors":"Christian Klug, Stephan N. F. Spiekman, Dylan Bastiaans, Beat Scheffold, Torsten M. Scheyer","doi":"10.1186/s13358-024-00308-7","DOIUrl":"https://doi.org/10.1186/s13358-024-00308-7","url":null,"abstract":"Marine conservation deposits (‘Konservat-Lagerstätten’) are characterized by their mode of fossil preservation, faunal composition and sedimentary facies. Here, we review these characteristics with respect to the famous conservation deposit of the Besano Formation (formerly Grenzbitumenzone; including the Anisian–Ladinian boundary), and the successively younger fossil-bearing units Cava inferiore, Cava superiore, Cassina beds and the Kalkschieferzone of Monte San Giorgio (Switzerland and Italy). We compare these units to a selection of important black shale-type Lagerstätten of the global Phanerozoic plus the Ediacaran in order to detect commonalities in their facies, genesis, and fossil content using principal component and hierarchical cluster analyses. Further, we put the Monte San Giorgio type Fossillagerstätten into the context of other comparable Triassic deposits worldwide based on their fossil content. The results of the principal component and cluster analyses allow a subdivision of the 45 analysed Lagerstätten into four groups, for which we suggest the use of the corresponding pioneering localities: Burgess type for the early Palaeozoic black shales, Monte San Giorgio type for the Triassic black shales, Holzmaden type for the pyrite-rich black shales and Solnhofen type for platy limestones.","PeriodicalId":56059,"journal":{"name":"Swiss Journal of Palaeontology","volume":"6 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140034034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The first Cyclida from the Triassic of Italy 意大利三叠纪最早的独眼巨人

IF 3 2区地球科学

Swiss Journal of Palaeontology Pub Date : 2024-02-28 DOI: 10.1186/s13358-024-00306-9

Vittorio Pieroni

引用次数: 0

Bernhard Peyer and his discoveries of Triassic vertebrates in Switzerland Bernhard Peyer 和他在瑞士发现的三叠纪脊椎动物

IF 3 2区地球科学

Swiss Journal of Palaeontology Pub Date : 2024-02-28 DOI: 10.1186/s13358-024-00310-z

Hans-Dieter Sues

引用次数: 0

A report on palaeontological excavations and sampling in mudrocks: some guidelines 关于在泥岩中进行古生物挖掘和取样的报告：一些指导原则

IF 3 2区地球科学

Swiss Journal of Palaeontology Pub Date : 2024-02-15 DOI: 10.1186/s13358-024-00305-w

Walter Etter

{"title":"A report on palaeontological excavations and sampling in mudrocks: some guidelines","authors":"Walter Etter","doi":"10.1186/s13358-024-00305-w","DOIUrl":"https://doi.org/10.1186/s13358-024-00305-w","url":null,"abstract":"More than 60% of the world’s sedimentary rocks are mudrocks (Potter et al., 1980; Schieber, 1998; Potter, 2003; the term mudrock is favored here over mudstone because the latter term was used to characterize a limestone texture; Dunham, 1962). From a palaeontological perspective these are, compared to sandstones and limestones, heavily undersampled. The main reason for this is that mudrocks decay in surface exposures to small chips, which develop with sun/heat and rain into an awkward pulp. The decay of the mudstone concomitantly destroys all macrofossils which are not durable. This comprises fossils with an aragonitic or delicate calcitic shell unless they are preserved as pyritic or internal calcitic molds or preserved within calcareous concretions. Therefore, most of the fossils are not recorded in surface exposures. In addition, sedimentologic investigations of mudrocks are hampered because (i) compaction makes sedimentary structures hardly recognizableand (ii) good thin sections of mudrocks are exceedingly difficult to manufacture. For micropalaeontological investigations, mudrocks rich in organic material are especially difficult to process. Standard treatments with boiling water, sodium carbonate solution, or peroxide H2O2 generally fail to dissolve much of the sediment so that the fine fraction (and in mudrocks we usually need the 63μm-fraction) largely consists of clay particle aggregates. Yet there are methods to dissolve these aggregates. Otherwise, picking the microfossils would become extremely laborious. In this paper, some guidelines for successful palaeontological work in mudrocks are outlined. These are based on the author’s personal experience. Examples from Jurassic mudrocks of Switzerland/Europe show that such excavations can be very rewarding.","PeriodicalId":56059,"journal":{"name":"Swiss Journal of Palaeontology","volume":"201 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139754236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simoniteuthis, a new vampyromorph coleoid with prey in its arms from the Early Jurassic of Luxembourg Simoniteuthis，一种来自卢森堡早侏罗世、怀抱猎物的新的吸血鞘类动物

IF 3 2区地球科学

Swiss Journal of Palaeontology Pub Date : 2024-02-14 DOI: 10.1186/s13358-024-00303-y

Dirk Fuchs, Robert Weis, Ben Thuy

{"title":"Simoniteuthis, a new vampyromorph coleoid with prey in its arms from the Early Jurassic of Luxembourg","authors":"Dirk Fuchs, Robert Weis, Ben Thuy","doi":"10.1186/s13358-024-00303-y","DOIUrl":"https://doi.org/10.1186/s13358-024-00303-y","url":null,"abstract":"The evolutionary history of the cephalopod order Vampyromorpha with its only recent representative, Vampyroteuthis infernalis, the deep-sea vampire squid, is still obscure and a new specimen from the Early Jurassic of Luxembourg, provides new information on the vampyromorph morphology at this period. The new taxon Simoniteuthis michaelyi. gen. n. sp., which is based on a nearly complete gladius with associated head–arm complex, is morphologically intermediate between the families Loligosepiidae and Geopeltidae. Interestingly, the arm crown displays only four arm pairs, although an arm configuration consisting of five arm pairs should be expected in vampyromorph stem lineage representatives. This observation encouraged us to critically review the presumed homology of the filaments of Vampyroteuthis and the lost arm pair in cirrate and incirrate octopods. Moreover, two bony fishes in the mouth region implicated that Simoniteuthis michaelyi n. gen. n. sp. preyed upon them in hostile water depths, a taphonomic phenomenon called distraction sinking. By contrast to modern Vampyroteuthis infernalis, Simoniteuthis michaelyi n. gen. n. sp. roamed and hunted in shallower waters as typical for Mesozoic stem lineage vampyromorphs. According to the current fossil record, a vertical migration into deeper waters (probably associated with a shift in feeding behaviour) occurred at least since the Oligocene.","PeriodicalId":56059,"journal":{"name":"Swiss Journal of Palaeontology","volume":"49 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139753752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pachycormid fish fed on octobrachian cephalopods: new evidence from the ‘Schistes bitumineux’ (early Toarcian) of southern Luxembourg 以八腕头足类为食的棘尾鱼：来自卢森堡南部 "Schistes bitumineux"（早期托尔克世）的新证据

IF 3 2区地球科学

Swiss Journal of Palaeontology Pub Date : 2024-02-09 DOI: 10.1186/s13358-023-00295-1

Robert Weis, Dominique Delsate, Christian Klug, Thodoris Argyriou, Dirk Fuchs

{"title":"Pachycormid fish fed on octobrachian cephalopods: new evidence from the ‘Schistes bitumineux’ (early Toarcian) of southern Luxembourg","authors":"Robert Weis, Dominique Delsate, Christian Klug, Thodoris Argyriou, Dirk Fuchs","doi":"10.1186/s13358-023-00295-1","DOIUrl":"https://doi.org/10.1186/s13358-023-00295-1","url":null,"abstract":"A re-examination of the early Toarcian fish fossils preserved in public paleontological collections in Luxembourg revealed 70 specimens of large Toarcian pachycormid fish with an excellent three-dimensional preservation within calcareous nodules. Six of them are associated with octobrachian coleoid gladii in their oesophagus or stomach, an association not previously described from Luxembourg. The pachycormids are ascribed to Pachycormus macropterus (Blainville, 1818) and Saurostomus esocinus Agassiz, 1843 while the octobrachian gladii are ascribed to Teudopsis bollensis Voltz, 1836, Teudopsis sp. indet. and Loligosepiidae indet. The position and orientation of the gladii provide direct evidence of these fishes feeding on coleoids and thus a teuthophagous diet, rather than an accidental joint burial. Together with evidence from coeval deposits in Germany, these findings suggest that teuthophagy was a widespread feeding strategy at the base of the clade that contains the suspension-feeding pachycormid giants of the Jurassic–Cretaceous.","PeriodicalId":56059,"journal":{"name":"Swiss Journal of Palaeontology","volume":"13 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139753998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Callovian corals from the Swiss Jura 瑞士汝拉山脉的胼胝珊瑚

IF 3 2区地球科学

Swiss Journal of Palaeontology Pub Date : 2024-01-25 DOI: 10.1186/s13358-023-00298-y

Hannes Löser, Andreas Wetzel, Bernhard Hostettler

引用次数: 0

Updated cranial and mandibular description of the Late Cretaceous (Maastrichtian) baenid turtle Saxochelys gilberti based on micro-computed tomography scans and new information on the holotype-shell association 基于微型计算机断层扫描和关于主模式与贝壳关联的新信息，更新晚白垩世（马斯特里赫特）贝类海龟 Saxochelys gilberti 的头骨和下颌骨描述

IF 3 2区地球科学

Swiss Journal of Palaeontology Pub Date : 2024-01-23 DOI: 10.1186/s13358-023-00301-6

Gaël E. Spicher, Tyler R. Lyson, Serjoscha W. Evers

{"title":"Updated cranial and mandibular description of the Late Cretaceous (Maastrichtian) baenid turtle Saxochelys gilberti based on micro-computed tomography scans and new information on the holotype-shell association","authors":"Gaël E. Spicher, Tyler R. Lyson, Serjoscha W. Evers","doi":"10.1186/s13358-023-00301-6","DOIUrl":"https://doi.org/10.1186/s13358-023-00301-6","url":null,"abstract":"Saxochelys gilberti is a baenid turtle from the Late Cretaceous Hell Creek Formation of the United States of America known from cranial, shell, and other postcranial material. Baenid turtles are taxonomically diverse and common fossil elements within Late Cretaceous through Eocene faunas. Detailed anatomical knowledge is critical to understanding the systematics and morphological evolution of the group. This is particularly important as baenids represent an important group of continental vertebrates that survived the mass extinction event associated with the Cretaceous/Paleogene boundary. High-resolution micro-computed tomography scanning of the holotype skull reveals additional anatomical details for the already well-known Saxochelys gilberti. This includes the revision of some anatomical statements from the original description, but also detailed knowledge on internal anatomical features of the braincase and the description of a well-preserved axis (cervical vertebra 2). Our new detailed description and previous work on the shell and postcrania make Saxochelys one of the best-described, nearly complete baenid turtles, which are often only known from either isolated shell or cranial material. A revised phylogenetic analysis confirms the position of Saxochelys gilberti as a derived baenid (Eubaeninae) more closely related to Baena arenosa than to Eubaena cephalica.","PeriodicalId":56059,"journal":{"name":"Swiss Journal of Palaeontology","volume":"57 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139552388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications 中国西南中三叠世的一种新的棘皮龙（爬行动物门：Sauropterygia）及其系统发育和生物地理学意义

IF 3 2区地球科学

Swiss Journal of Palaeontology Pub Date : 2024-01-05 DOI: 10.1186/s13358-023-00292-4

Yi-Wei Hu, Qiang Li, Jun Liu

{"title":"A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications","authors":"Yi-Wei Hu, Qiang Li, Jun Liu","doi":"10.1186/s13358-023-00292-4","DOIUrl":"https://doi.org/10.1186/s13358-023-00292-4","url":null,"abstract":"After the devastating Permo-Triassic Mass Extinction, several new groups of large reptilian predators invaded the sea in the early part of the Triassic. Among these predators, sauropterygians, consisting of placodonts, pachypleurosaurs, nothosaurs and pistosaurs (including the iconic plesiosaurs), displayed the greatest diversity at both the generic and species levels, and persisted from the Early Triassic to the Late Cretaceous. Here, we report a new species of Pachypleurosauria, Dianmeisaurus mutaensis sp. nov., from a recently discovered Lagerstätte in the Upper Member of the Anisian Guanling Formation. The only known specimen of the new species was collected from a quarry near Muta village, Luxi County, Yunnan Province, South China. Our new phylogenetic analysis based on a novel data matrix recovered the new taxon as a sister group to Dianmeisaurus gracilis—a small pachypleurosaur from the Middle Triassic Luoping biota. The new phylogenetic analysis also collapsed the monophyly of the traditionally recognized Eusauropterygia. Pistosauroidea, Majiashanosaurus, and Hanosaurus comprise the consecutive sister groups to a new clade including Pachypleurosauria and Nothosauroidea. A monophyletic Pachypleurosauria, within which the clade consisting of Dianmeisaurus and Panzhousaurus occupies the basal-most position, is recovered by this study. The clade consisting of Dawazisaurus and Dianopachysaurus forms the sister group to the remaining pachypleurosaurs included in this study. Since Dianmeisaurus, Panzhousaurus, Dawazisaurus, and Dianopachysaurus are all exclusively known from South China, our study provides further evidence to the hypothesis that pachypleurosaurs had a palaeobiogeographic origin in the eastern Tethys.","PeriodicalId":56059,"journal":{"name":"Swiss Journal of Palaeontology","volume":"99 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139103728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Swiss ichthyosaurs: a review. 瑞士鱼龙：综述。

IF 3 2区地球科学

Swiss Journal of Palaeontology Pub Date : 2024-01-01 Epub Date: 2024-09-01 DOI: 10.1186/s13358-024-00327-4

Christian Klug, Timur Sivgin, Feiko Miedema, Beat Scheffold, Achim G Reisdorf, Iwan Stössel, Erin E Maxwell, Torsten M Scheyer

引用次数: 0