Palaeontologia Electronica最新文献

Bioerosion traces on the Campanian turtle remains: New data from the lagoonal deposits of the Quseir Formation, Kharga Oasis, Egypt 坎帕尼亚龟遗骸上的生物侵蚀痕迹:来自埃及哈尔加绿洲库西尔组泻湖沉积物的新数据

4区地球科学

Palaeontologia Electronica Pub Date : 2023-01-01 DOI: 10.26879/1315

Magdy El Hedeny, Sara Mohesn, Abdel-aziz Tantawy, Ahmed El-Sabbagh, Mohamed AbdelGawad, Gebely El-Kheir

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Wear-dependent molar morphology in hypsodont rodents: The case of the spalacine Pliospalax 下齿啮齿动物磨损依赖的磨牙形态:以空间目上齿为例

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Palaeontologia Electronica Pub Date : 2023-01-01 DOI: 10.26879/1322

Panagiotis Skandalos, Lars van den Hoek Ostende

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An overview of crawling water beetle larvae and a first possible record from 100-million-years-old Myanmar amber 爬行水甲虫幼虫的概述和第一个可能的记录来自一亿年前的缅甸琥珀

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Palaeontologia Electronica Pub Date : 2023-01-01 DOI: 10.26879/1290

Simon Linhart, Patrick Müller, Gideon Haug, Carolin Haug, Joachim Haug

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Rogueus belgodereae, a new raninoid crab (Crustacea: Brachyura: Raninoidea) from the Upper Palaeocene (Thanetian) of Southern France, with comments on early palaeocene decapod crustacean faunules Rogueus belgodereae，法国南部上古新世(Thanetian)一新种甲壳类蟹(甲壳纲:短尾目:甲壳总目)，并对早古新世十足甲壳类动物群作了评述

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Palaeontologia Electronica Pub Date : 2023-01-01 DOI: 10.26879/1269

Barry Van Bakel, Àlex Ossó, Dominique Téodori

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Two exceptional Balaenomorpha (Cetacea: Mysticeti) from the Biemenhorst Subformation (middle/late Miocene) of Bocholt (W Münsterland, Germany) with a critical appraisal on the anatomy of the periotic bone 德国wm<s:1> nsterland Bocholt Biemenhorst亚组(中新世中晚期)两个特殊的Balaenomorpha(鲸科:Mysticeti)，并对其骨膜解剖结构进行了批判性评价

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Palaeontologia Electronica Pub Date : 2023-01-01 DOI: 10.26879/1268

Indira Ritsche, Oliver Hampe

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Trophic relationships in the Early Miocene Upper Marine Molasse of Baden-Württemberg, Southwest Germany, with special emphasis on the elasmobranch fauna 德国西南部baden - w<e:1> - rttemberg早中新世上海Molasse的营养关系，特别强调了elasmobranch动物群

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Palaeontologia Electronica Pub Date : 2023-01-01 DOI: 10.26879/1233

Olaf Höltke, Rodrigo B. Salvador, Michael W. Rasser

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Report from the 8th Symposium on Fossil Decapod Crustaceans, Zaragoza (Spain), June 2022 第八届十足甲壳类化石研讨会报告，西班牙萨拉戈萨，2022年6月

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Palaeontologia Electronica Pub Date : 2023-01-01 DOI: 10.26879/1319

Samuel Zamora, Fernando Ferratges, Álvaro García-Penas, Marcos Aurell

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Forelimb motion and orientation in the ornithischian dinosaurs Styracosaurus and Thescelosaurus, and its implications for locomotion and other behavior 鸟臀目恐龙Styracosaurus和Thescelosaurus的前肢运动和方向及其对运动和其他行为的启示

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Palaeontologia Electronica Pub Date : 2023-01-01 DOI: 10.26879/1289

Philip Senter, Jared Mackey

{"title":"Forelimb motion and orientation in the ornithischian dinosaurs Styracosaurus and Thescelosaurus, and its implications for locomotion and other behavior","authors":"Philip Senter, Jared Mackey","doi":"10.26879/1289","DOIUrl":"https://doi.org/10.26879/1289","url":null,"abstract":"The range of motion (ROM) in the forelimb has previously been studied in many saurischian dinosaur species but only a few ornithischian dinosaur species. Here, we fill in some of the blanks in current knowledge of ornithischian forelimb function by investigating the range of shoulder motion and the orientation of the humerus, radius, and ulna in the centrosaurine ceratopsid Styracosaurus albertensis and the basal orni-thopod Thescelosaurus sp. Manual manipulation of forelimb bones, using the margins of bony articular surfaces to delimit the range of motion, shows that humeral ROM and forearm orientation in S. albertensis resemble those previously found in chasmosau-rine ceratopsians. Locomotion occurred with the elbows tucked in at the sides and with the radius anterior to the ulna, without pronation. The animal was also capable of splaying its forelimbs with the elbows strongly everted, so that elbow flexion and extension produced side-to-side or up-and-down movements of the torso and head. Thesce-losaurus sp. had limited humeral ROM and could not swing its humerus forward through the parasagittal plane as far as a vertical orientation. While being swung upward through the transverse plane, the humerus could not move as high as a horizontal position. Skeletal proportions and spinal curvature indicate that the forelimbs of Thescelosaurus could contact the ground while the animal stood. However, the animal is unlikely to have used quadrupedal locomotion, because its palms faced medially, and its fingers would have flexed through the transverse plane and therefore would not have provided forward propulsion","PeriodicalId":49139,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136053102","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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Internal anatomy of a brachyuran crab from a Late Cretaceous methane seep and an overview of internal soft tissues in fossil decapod crustaceans 晚白垩世甲烷渗漏中的短爪蟹内部解剖及十足甲壳类化石内部软组织概述

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Palaeontologia Electronica Pub Date : 2023-01-01 DOI: 10.26879/1277

Adiël Klompmaker, Peter Kloess, Clément Jauvion, Jamie Brezina, Neil Landman

引用次数: 0

A fossil locality predictive model using weighted suitability analysis for the Early Cretaceous Cedar Mountain Formation, Utah, USA 基于加权适宜性分析的美国犹他州早白垩世雪松山组化石位置预测模型

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Palaeontologia Electronica Pub Date : 2023-01-01 DOI: 10.26879/1130

Daniel Burk

{"title":"A fossil locality predictive model using weighted suitability analysis for the Early Cretaceous Cedar Mountain Formation, Utah, USA","authors":"Daniel Burk","doi":"10.26879/1130","DOIUrl":"https://doi.org/10.26879/1130","url":null,"abstract":"Hard work and chance are nearly always among the deciding factors in finding new, important, and productive paleontological localities. Fossil locality predictive models have the potential to maximize field time and increase chances to find important localities. This study uses remotely sensed data to design and test a fossil locality predictive model for the Early Cretaceous Cedar Mountain Formation. Landsat 8 OLI/TIRS data from known localities were summarized, reclassified, and used in a weighted suitability analysis to categorize fossil locality potential of the study area. Field work was conducted to test model functionality. Field observations were used to refine the weighted suitability analysis. Landsat 8 OLI/TIRS data alone offers a less accurate prescription of fossil locality potential. Additional physical and environmental factors play a role in determining the chance of finding fossils. Slope degree and aspect data from known localities were summarized and analyzed to further refine the model. Forty percent of existing fossil localities within the final model boundaries were located on areas having the highest fossil locality potential as identified by the model. The usefulness of fossil locality predictive models is dependent upon the quality of input data and meth-ods used to determine fossil locality potential. To fully determine the quality of a fossil locality predictive model, field testing is ideal.","PeriodicalId":49139,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135007005","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}

引用次数: 0