气候变化领域集成服务门户(CCPortal): Middle Triassic (Ladinian) amphibian tracks from the Lower Keuper succession of southern Germany: Implications for temnospondyl locomotion and track preservation

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DOI	10.1016/j.palaeo.2020.109625
	Middle Triassic (Ladinian) amphibian tracks from the Lower Keuper succession of southern Germany: Implications for temnospondyl locomotion and track preservation
	Mujal E.; Schoch R.R.
发表日期	2020
ISSN	0031-0182
卷号	543
英文摘要	Triassic temnospondyl amphibian tracks are relatively rare, in contrast with the body fossil record. Herein we report temnospondyl tracks from the base of the Anthrakonitbank carbonate bed, within the upper Middle Triassic Lower Keuper succession (Erfurt Formation) in the Vellberg Fossil-Lagerstätte of southern Germany. The sedimentary succession comprises restricted marine deposits, and the track-bearing layer includes microbial mats covering thin bone-beds. The ichnological material includes >20 footprints, four of which are arranged in a trackway, and all footprints comprise manus impressions with no pes preserved. The combination of characters, such as tetradactyl clawless manus impressions, relative digit length and angulation, and trackway with low pace angulation, are different from any known tetrapod ichnotaxon. While the scarcity of material precludes a confident ichnotaxonomy, comparison with the autopodia in the body fossil record suggests capitosaur stereospondyls as the most probable trackmakers. Ichnological and sedimentological features indicate that the trackmakers displayed a walking-swimming locomotion, with a sprawling posture, only touching the substrate with the forelimbs, as seen in present-day swimming crocodiles. The Vellberg tetrapod tracks reported here contribute to our knowledge of the Triassic ichnological record, as well as the life style and habitats of temnospondyls. © 2020 Elsevier B.V.
英文关键词	Fossil footprints; Ladinian; Lagerstätte; Locomotion; Microbial mats; Vellberg
语种	英语
scopus关键词	amphibian; carbonate sediment; fossil record; Keuper; locomotion; succession; tetrapod; trackway; Triassic; Erfurt; Germany; Germany; Thuringia; Amphibia; Crocodylidae (all crocodiles); Tetrapoda
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150588
作者单位	Staatliches Museum für Naturkunde Stuttgart, Rosenstein 1, Stuttgart, D-07191, Germany; Institut Català de Paleontologia Miquel Crusafont, ICTA-ICP building, c/ de les columnes, s/n, Cerdanyola del Vallès, Catalonia E-08193, Spain
推荐引用方式 GB/T 7714	Mujal E.,Schoch R.R.. Middle Triassic (Ladinian) amphibian tracks from the Lower Keuper succession of southern Germany: Implications for temnospondyl locomotion and track preservation[J],2020,543.
APA	Mujal E.,&Schoch R.R..(2020).Middle Triassic (Ladinian) amphibian tracks from the Lower Keuper succession of southern Germany: Implications for temnospondyl locomotion and track preservation.Palaeogeography, Palaeoclimatology, Palaeoecology,543.
MLA	Mujal E.,et al."Middle Triassic (Ladinian) amphibian tracks from the Lower Keuper succession of southern Germany: Implications for temnospondyl locomotion and track preservation".Palaeogeography, Palaeoclimatology, Palaeoecology 543(2020).