DOI: 10.1016/j.palaeo.2017.05.033
论文题名: Residues from the Upper Permian carnivore coprolites from Vyazniki in Russia - key questions in reconstruction of feeding habits
作者: Bajdek P. ; Owocki K. ; Sennikov A.G. ; Golubev V.K. ; Niedźwiedzki G.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 482 起始页码: 70
结束页码: 82
语种: 英语
英文关键词: Acid dissolution
; Fossil feces
; Microbial fossils
; Palaeoecology
; Undigested remains
英文摘要: Residues of twenty-five coprolite fragments collected from the Upper Permian of Vyazniki (European Russia) were studied in detail. The phosphatic composition, general shape and size, and bone inclusions of these specimens indicate that medium to large-sized carnivores, such as therocephalian therapsids or early archosauriforms, were the most likely coprolite producers. The contents of the examined fossils (i.e. scale, bone and tooth fragments, mineral grains, and microbial structures) do not differ significantly among the samples, implying fairly comparable feeding habits of their producers. Fragments of large tooth crowns in two of the analyzed samples imply that either (1) the coprolite producer swallowed the cranial elements of its prey or (2) the coprolite producer broke and swallowed its own tooth while feeding (such tooth damage is known in archosaurs that have tooth replacement, e.g. crocodiles and dinosaurs). Indeed, the most complete tooth fragment in these fossils is serrated, most likely belonging to an early archosauriform known from skeletal records from the Late Permian of Vyazniki. Another coprolite fragment contains the etched tooth of a lungfish, while putative actinopterygian fish remains (scales and small fragments of bones) are abundant in some samples. Mineral particles (mostly quartz grains, feldspars and mica) may have been swallowed accidentally. The preserved microbial colonies (mineralized fossil fungi and bacteria or their pseudomorphs), manifested in the coprolites as Fe-rich mineral structures, seem to have developed on the expelled feces rather than on the items before they were swallowed. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67791
Appears in Collections: 过去全球变化的重建
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作者单位: Aleja Najświętszej Maryi Panny 20/20A, Częstochowa, Poland; Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, Warsaw, Poland; Borissiak Paleontological Institute, Russian Academy of Sciences, Profsoyuznaya 123, Moscow, Russian Federation; Kazan Federal University, Kremlyovskaya 18, Kazan, Russian Federation; Department of Organismal Biology, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18A, Uppsala, Sweden
Recommended Citation:
Bajdek P.,Owocki K.,Sennikov A.G.,et al. Residues from the Upper Permian carnivore coprolites from Vyazniki in Russia - key questions in reconstruction of feeding habits[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,482