globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2017.01.050
论文题名:
Integrated overview of the vertebrate fossil record of the Ladruñán anticline (Spain): Evidence of a Barremian alluvial-lacustrine system in NE Iberia frequented by dinosaurs
作者: Gasca J.M.; Moreno-Azanza M.; Bádenas B.; Díaz-Martínez I.; Castanera D.; Canudo J.I.; Aurell M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 472
起始页码: 192
结束页码: 202
语种: 英语
英文关键词: Bonebeds ; Dinosaur tracks ; Eggshells ; Mirambel Formation ; Palaeoenvironments ; Taphonomic modes
英文摘要: The Barremian Mirambel Formation (Maestrazgo Basin, Iberian Chain, NE Spain) preserves different types of dinosaur and other vertebrate fossils (skeletal, eggshell and ichnological remains). A total of 31 vertebrate fossil sites and tracksites have been recognized within this unit in the Ladruñán area (Teruel province). Detailed stratigraphic, sedimentological and micropalaeontological analyses have also been performed in the unit. A vertical sedimentary trend from alluvial-dominated facies (meandering river and related overbank areas) to palustrine-lacustrine facies and back has been defined for the Mirambel Formation in this area. The depositional system was located close to the coastline, as indicated by sporadic marine input in the lower part of the unit. Most fossil remains were recovered by surface collection as well as by the usual techniques used for macrovertebrate excavations. The dinosaur record identified comprises ornithopods, theropods and sauropods. Four distinct track-bearing horizons have been identified. The heterolithic nature and aggradation characteristic of the Mirambel Formation are favourable factors for track formation and preservation. The dinosaur tracks consist of convex hyporeliefs or concave epireliefs that record the trackmakers as they frequented lakeshores, alluvial floodplains and fluvial courses. Macrovertebrate bonebeds occur in alluvial settings (poorly-drained floodplains and “ponds”). Microvertebrate concentrations are located in shallow lacustrine deposits. Isolated skeletal elements can be found in a great variety of deposits. Attritional accumulation in a low-energy depositional context is the general pattern of origin for the bone-bearing fossil sites of the Mirambel Formation. As regards the genetic framework, the resulting skeletal assemblages are predominantly the result of physical factors, with sedimentology as a key factor, rather than biological phenomena. Eggshell fragments are frequent throughout the unit but are clearly more common in palustrine-lacustrine deposits. These can be taken to be parautochthonous bioclasts from nearby areas and might be indicative of the preferential affinity of the egg-layers for wetlands and lakeshores. © 2017 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67889
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: Grupo Aragosaurus-IUCA, http://www.aragosaurus.com, Universidad de Zaragoza, Zaragoza, Spain; CONICET-Museo Provincial de Ciencias Naturales “Profesor Dr. Juan A. Olsacher”, Zapala, Neuquén, Argentina; Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, Caparica, Portugal; Estratigrafía, Departamento de Ciencias de la Tierra, Universidad de Zaragoza, Zaragoza, Spain; CONICET-Instituto de Investigación en Paleobiología y Geología, Universidad Nacional de Río Negro, General Roca, Río Negro, Argentina; Bayerische Staatssammlung für Paläontologie und Geologie and GeoBioCenter, Ludwig-Maximilians-Universität, Richard-Wagner-Str. 10, Munich, Germany

Recommended Citation:
Gasca J.M.,Moreno-Azanza M.,Bádenas B.,et al. Integrated overview of the vertebrate fossil record of the Ladruñán anticline (Spain): Evidence of a Barremian alluvial-lacustrine system in NE Iberia frequented by dinosaurs[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,472
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Gasca J.M.]'s Articles
[Moreno-Azanza M.]'s Articles
[Bádenas B.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Gasca J.M.]'s Articles
[Moreno-Azanza M.]'s Articles
[Bádenas B.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Gasca J.M.]‘s Articles
[Moreno-Azanza M.]‘s Articles
[Bádenas B.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.