DOI: 10.1016/j.palaeo.2013.11.019
论文题名: Coprolite evidence for carnivorous predation in a Late Devonian pelagic environment of southern Laurussia
作者: Zatoń M. ; Rakociński M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 394 起始页码: 1
结束页码: 11
语种: 英语
英文关键词: Coprolites
; Devonian
; Phosphatization
; Poland
; Predation
英文摘要: Small, light-brown and beige cylindrical structures found in the lower Famennian (Upper Devonian) shales and marls of the Holy Cross Mountains area, central Poland, have been investigated for the first time. Their compact, pellet-shaped morphology and the presence of various fossil fragments scattered within the phosphatic groundmass clearly indicate that they are coprolites. The coprolite inclusions are dominated by arthropod cuticle fragments followed by fish remains, one conodont, and one scolecodont. The arthropod cuticle fragments are represented by the crustacean-like thylacocephalan Concavicaris and three other different types of arthropods of uncertain affinity. The presence of some conical fragments resembling telsons from phyllocarid crustaceans suggests that some of the cuticle fragments may belong to that group of arthropods. The fish remains mainly consist of actinopterygian paleoniscoid scales and sarcopterygian teeth. Taking both fossil and facies characteristics into account, it is clear that the coprolites originated from a carnivorous pelagic fishes that hunted other fishes and swimming arthropods. Surprisingly, similar faunal contents consisting of paleoniscoid fishes, Concavicaris arthropods, and conodonts occur in situ within the body cavities of the Famennian cladoselachian sharks in the Cleveland Shale, Ohio. Such a coincidence suggests that at least some of the Famennian coprolites from Poland may have also been produced by pelagic carnivorous sharks. The preservation of defecated remains was influenced by an interplay between an oxygen-deficient benthic environment devoid of bioturbators and scavengers and rapid, microbially-driven phosphatization. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69482
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, PL-41-200 Sosnowiec, Poland
Recommended Citation:
Zatoń M.,Rakociński M.. Coprolite evidence for carnivorous predation in a Late Devonian pelagic environment of southern Laurussia[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,394