Residues from the Upper Permian carnivore coprolites from Vyazniki in Russia - key questions in reconstruction of feeding habits

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Fältnamn	Indikatorer	Metadata
000		04107naa a2200409 4500
001		oai:DiVA.org:uu-329889
003		SwePub
008		180220s2017 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3298892 URI
024	7	a https://doi.org/10.1016/j.palaeo.2017.05.0332 DOI
040		a (SwePub)uu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Bajdek, Piotru Aleja Najswietszej Maryi Panny 20-20A, PL-42200 Czestochowa, Poland.4 aut
245	1 0	a Residues from the Upper Permian carnivore coprolites from Vyazniki in Russia - key questions in reconstruction of feeding habits
264	1	b ELSEVIER SCIENCE BV,c 2017
338		a print2 rdacarrier
520		a 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 Vyaznilci. 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.
650	7	a NATURVETENSKAPx Geovetenskap och miljövetenskapx Multidisciplinär geovetenskap0 (SwePub)105032 hsv//swe
650	7	a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geosciences, Multidisciplinary0 (SwePub)105032 hsv//eng
650	7	a NATURVETENSKAPx Geovetenskap och miljövetenskapx Naturgeografi0 (SwePub)105072 hsv//swe
650	7	a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Physical Geography0 (SwePub)105072 hsv//eng
653		a Fossil feces
653		a Acid dissolution
653		a Undigested remains
653		a Microbial fossils
653		a Palaeoecology
700	1	a Owocki, Krzysztofu Polish Acad Sci, Inst Paleobiol, Twarda 51-55, PL-00818 Warsaw, Poland.4 aut
700	1	a Sennikov, Andrey G.u Russian Acad Sci, Borissiak Paleontol Inst, Profsoyuznaya 123, Moscow 117997, Russia.;Kazan Fed Univ, Kremlyovskaya 18, Kazan 420008, Russia.4 aut
700	1	a Golubev, Valeriy K.u Russian Acad Sci, Borissiak Paleontol Inst, Profsoyuznaya 123, Moscow 117997, Russia.;Kazan Fed Univ, Kremlyovskaya 18, Kazan 420008, Russia.4 aut
700	1	a Niedzwiedzki, Grzegorz,d 1980-u Uppsala universitet,Evolution och utvecklingsbiologi4 aut0 (Swepub:uu)grzni333
710	2	a Aleja Najswietszej Maryi Panny 20-20A, PL-42200 Czestochowa, Poland.b Polish Acad Sci, Inst Paleobiol, Twarda 51-55, PL-00818 Warsaw, Poland.4 org
773	0	t Palaeogeography, Palaeoclimatology, Palaeoecologyd : ELSEVIER SCIENCE BVg 482, s. 70-82q 482<70-82x 0031-0182x 1872-616X
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-329889
856	4 8	u https://doi.org/10.1016/j.palaeo.2017.05.033

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