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DOI | 10.1016/j.palaeo.2018.11.018 |
Dinosaur-landscape interactions at a diverse Early Cretaceous tracksite (Lee Ness Sandstone; Ashdown Formation; southern England) | |
Shillito A.P.; Davies N.S. | |
发表日期 | 2019 |
ISSN | 0031-0182 |
起始页码 | 593 |
结束页码 | 612 |
卷号 | 514 |
英文摘要 | An assemblage of dinosaur footprints is reported from the Lower Cretaceous (Berriasian-Valanginian) Ashdown Formation of East Sussex, southern England. The ichnofauna is concentrated around a 2 m thick stratigraphic marker, the Lee Ness Sandstone, where recent cliff retreat has revealed 85 recognisable footprints attributable to 13 morphotypes, many of which bear high-fidelity skin impressions. The newly identified morphotypes mean that this tracksite hosts one of the most diverse dinosaur ichnoassemblages in the well-documented Mesozoic record of Britain; recording the activity of theropod, ornithopod, thyreophoran and possibly sauropod tracemakers. Most of the footprints were emplaced on a single floodplain mudstone horizon beneath a fluvial crevasse splay sandstone, where preservation was favoured by cohesive sediment and a prolonged interval of sedimentary stasis, during which trackways could be imparted. The sedimentological context of the trackways reveals evidence of interactions between dinosaurs and the riverine landscape that they inhabited; including the development of microtopographies around footprints, which impacted invertebrate burrowing activity, and evidence for dinosaur wading below the bankfull level of small meandering channels and oxbow lakes. Modern analogue suggests that the large dinosaurs may have played a significant role as zoogeomorphic engineers within the ancient floodplain setting, but the imperfect translation of sedimentary environment to sedimentary rock means that geological evidence for such is ambiguous. © 2018 Elsevier B.V. |
英文关键词 | Floodplain; Fluvial; Footprint; Ichnology; Wealden; Zoogeomorphology |
语种 | 英语 |
scopus关键词 | burrowing; cohesionless sediment; Cretaceous; dinosaur; floodplain; footprint; geomorphology; ichnology; invertebrate; Mesozoic; microtopography; morphotype; mudstone; preservation; sandstone; trackway; East Sussex; England; United Kingdom; United Kingdom; Dinosauria; Invertebrata; Ornithopoda; Sauropoda; Theropoda |
来源期刊 | Palaeogeography, Palaeoclimatology, Palaeoecology
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/151133 |
作者单位 | Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, United Kingdom |
推荐引用方式 GB/T 7714 | Shillito A.P.,Davies N.S.. Dinosaur-landscape interactions at a diverse Early Cretaceous tracksite (Lee Ness Sandstone; Ashdown Formation; southern England)[J],2019,514. |
APA | Shillito A.P.,&Davies N.S..(2019).Dinosaur-landscape interactions at a diverse Early Cretaceous tracksite (Lee Ness Sandstone; Ashdown Formation; southern England).Palaeogeography, Palaeoclimatology, Palaeoecology,514. |
MLA | Shillito A.P.,et al."Dinosaur-landscape interactions at a diverse Early Cretaceous tracksite (Lee Ness Sandstone; Ashdown Formation; southern England)".Palaeogeography, Palaeoclimatology, Palaeoecology 514(2019). |
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