气候变化领域集成服务门户(CCPortal): Gregarious behaviour among non-avian theropods inferred from trackways: A case study from the Cretaceous (Cenomanian) Candeleros Formation of Patagonia; Argentina

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DOI	10.1016/j.palaeo.2019.109480
	Gregarious behaviour among non-avian theropods inferred from trackways: A case study from the Cretaceous (Cenomanian) Candeleros Formation of Patagonia; Argentina
	Heredia A.M.; Díaz-Martínez I.; Pazos P.J.; Comerio M.; Fernández D.E.
发表日期	2020
ISSN	0031-0182
卷号	538
英文摘要	Gregarious behaviour among dinosaurs has been inferred from several lines of evidence (monospecific bonebeds, skeletal morphology, phylogenetic inferences, comparison with modern ecosystems and parallel trackways with particular characteristics), but is relatively poorly documented for non-avian theropods. Here, we report five parallel theropod trackways of large track size (average length of 28 cm) in the Cretaceous (Cenomanian) Candeleros Formation from northwestern Patagonia, Argentina. The tracks are provisionally assigned to aff. Asianopodus pulvinicalx and considering the autopod morphology of the theropod taxa documented in the Candeleros Formation, abelisaurid theropods are suggested as trackmakers. The trackways possess similar stride, speed estimation, direction and preservational features, and track show uniform depth and do not overlap. Physical barriers (i.e., large fluvial channels or perennial lake) that could influence the direction of the theropod trackmaker gaits were not recognized in the section. Taking into account these considerations, a gregarious behaviour for the abelisaurid theropod trackmakers is proposed. The tracks are preserved as shallow undertracks in a medium-grained sandstone bed deposited in a floodplain setting. The tracking surface is interpreted as the overlaying layer of muddy-siltstone. The occurrence of swelling clays and microbial mats in the track-bearing level could have contributed to the substrate stabilization and their role in the preservation is discussed. © 2019 Elsevier B.V.
英文关键词	Abelisauridae; Dinosaur behavior; Gregariousness; Neuquén Basin; Theropod footprint; Upper Cretaceous
语种	英语
scopus关键词	behavioral ecology; Cretaceous; dinosaur; documentary source; footprint; ichnology; microbial mat; morphology; preservation; trackway; Argentina; Neuquen Basin; Patagonia; Aves; Dinosauria; Theropoda
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/150666
作者单位	Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Ciencias Geológicas, Buenos Aires, Argentina; CONICET - Universidad de Buenos Aires, Instituto de Estudios Andinos Don Pablo Groeber (IDEAN), Buenos Aires, Argentina; CONICET - Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología (IIPG), General Roca, Río Negro, Argentina; CONICET - Centro de Tecnología de Recursos Minerales y Cerámica (CETMIC), Argentina
推荐引用方式 GB/T 7714	Heredia A.M.,Díaz-Martínez I.,Pazos P.J.,et al. Gregarious behaviour among non-avian theropods inferred from trackways: A case study from the Cretaceous (Cenomanian) Candeleros Formation of Patagonia; Argentina[J],2020,538.
APA	Heredia A.M.,Díaz-Martínez I.,Pazos P.J.,Comerio M.,&Fernández D.E..(2020).Gregarious behaviour among non-avian theropods inferred from trackways: A case study from the Cretaceous (Cenomanian) Candeleros Formation of Patagonia; Argentina.Palaeogeography, Palaeoclimatology, Palaeoecology,538.
MLA	Heredia A.M.,et al."Gregarious behaviour among non-avian theropods inferred from trackways: A case study from the Cretaceous (Cenomanian) Candeleros Formation of Patagonia; Argentina".Palaeogeography, Palaeoclimatology, Palaeoecology 538(2020).