DOI: 10.1016/j.palaeo.2015.04.009
论文题名: Coprolites of Late Triassic carnivorous vertebrates from Poland: An integrative approach
作者: Zatoń M. ; Niedzwiedzki G. ; Marynowski L. ; Benzerara K. ; Pott C. ; Cosmidis J. ; Krzykawski T. ; Filipiak P.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 430 起始页码: 21
结束页码: 46
语种: 英语
英文关键词: Bacteria
; Biomarkers
; Carnivores
; Coprolites
; Cuticles
; Triassic
英文摘要: Vertebrate coprolites derived from Upper Triassic terrestrial deposits of southern Poland have been subjected to various analytical methods in order to retrieve information about their composition, producer's diet and nature of the microscopic structures preserved in the groundmass. Morphologically, the coprolites have been classified into four morphotypes, of which only three were further analysed due to their good state of preservation. Their groundmass are composed of francolite, a carbonate-rich apatite, in which abundant coccoid structures are preserved. Based on various microscopic and organic geochemical techniques, they are interpreted as fossilized bacteria which could have mediated the phosphatization of the faeces. The thin sectioning revealed that the coprolites consist of those containing exclusively bone remains, and those preserving both bone and plant remains. Those coprolites preserving only vertebrate remains are suggestive for exclusive carnivorous diet of the producers. However, the interpretation of coprolites consisting of both vertebrate and plant remains is more debatable. Although they may attest to omnivory, it cannot be excluded that potential producers were carnivorous and occasionally ingested plants, or accidentally swallowed plant material during feeding. The latter may involve predation or scavenging upon other herbivorous animals. The potential producers may have been animals that foraged in or near aquatic habitats, such as semi-aquatic archosaurs and/or temnospondyls. This is supported by the presence of ostracode and other aquatic arthropod remains, and fish scales within the coprolites, as well as by the presence of specific biomarkers such as phytanic and pristanic acids, which are characteristic constituents of fish oil. The preservation of such labile organic compounds as sterols, palmitin, stearin or levoglucosan attests for rapid, microbially-mediated mineralization of the faeces at very early stages of diagenesis. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68918
Appears in Collections: 过去全球变化的重建
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作者单位: University of Silesia, Faculty of Earth Sciences, Bedzińska 60, Sosnowiec, Poland; Department of Organismal Biology, Evolutionary Biology Center, Uppsala University, Norbyvägen 18A, Uppsala, Sweden; Institut de Minéralogie, de Physique des Matériaux, et de Cosmochimie, Sorbonne Universités - UPMC, CNRS and MNHN, 4 Place Jussieu, Paris, France; Department of Palaeobiology, Swedish Museum of Natural History, Box 50007, Stockholm, Sweden; Department of Geological Sciences, University of Colorado, 2200 Colorado Avenue, Boulder, CO, United States
Recommended Citation:
Zatoń M.,Niedzwiedzki G.,Marynowski L.,et al. Coprolites of Late Triassic carnivorous vertebrates from Poland: An integrative approach[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,430