Arid
DOI10.1016/j.palaeo.2014.12.006
Bacterial origin of iron-rich microspheres in Miocene mammalian fossils
Pesquero, M. Dolores1,3; Alcala, Luis1; Bell, Lynne S.2; Fernandez-Jalvo, Yolanda3
通讯作者Pesquero, M. Dolores
来源期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
EISSN1872-616X
出版年2015
卷号420页码:27-34
英文摘要

In their taphonomic study of a Cretaceous dinosaur fossil from the Gobi desert (Mongolia), Kremer et at (2012) noted that the histological sections of this fossil preserved within their core iron oxide microspheres containing carbonaceous matter. They interpreted the carbonaceous nature of these structures as organic matter and suggested a microbial origin (probably bacterial) for the structures. Microspheres, similar both in composition and shape, have been identified in fossils from Cerro de la Garita, a Miocene mammalian site in Teruel, Spain. In the latter case, compact bone was also attacked by terrestrially associated bacteria (microscopic focal destruction [MFD)) which were enriched in iron and gives support to the idea that bacteria acted as the biological agent for iron precipitation during soft tissue decomposition in the early stages of bone diagenesis. Subsequent diagenetic episodes of mineralization related to the environmental context differ between these two sites; calcite precipitation at the palaeo-lakeshore of Cerro de la Garita and calcite and gypsum in the Gobi desert study case of Kremer et at (2012). If the microsphere is bacterial in origin, it may be a useful taphonomic indicator of terrestrial exposure within a transitional environment of land and water. (C) 2014 Elsevier B.V. All rights reserved.


英文关键词Iron microbial mineralization Vertebrate Miocene site Spain Taphonomy Bacteria Bone diagenesis
类型Article
语种英语
国家Spain ; Canada
收录类别SCI-E
WOS记录号WOS:000349804300003
WOS关键词DIAGENETIC ALTERATION ; PRECIPITATION ; BONE ; TAPHONOMY ; OXIDES
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向Physical Geography ; Geology ; Paleontology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/189495
作者单位1.Fdn Conjunto Paleontol Teruel Dinopolis, Teruel 44002, Spain;
2.Simon Fraser Univ, Ctr Forens Res, Sch Criminol, Burnaby, BC V5A 1S6, Canada;
3.CSIC, Museo Nacl Ciencias Nat, E-28006 Madrid, Spain
推荐引用方式
GB/T 7714
Pesquero, M. Dolores,Alcala, Luis,Bell, Lynne S.,et al. Bacterial origin of iron-rich microspheres in Miocene mammalian fossils[J],2015,420:27-34.
APA Pesquero, M. Dolores,Alcala, Luis,Bell, Lynne S.,&Fernandez-Jalvo, Yolanda.(2015).Bacterial origin of iron-rich microspheres in Miocene mammalian fossils.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,420,27-34.
MLA Pesquero, M. Dolores,et al."Bacterial origin of iron-rich microspheres in Miocene mammalian fossils".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 420(2015):27-34.
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