Papers by Malgorzata Bienkowska-Wasiluk
Palaeogeography, Palaeoclimatology, Palaeoecology, 2019
Non-spiral coprolites likely produced by teleost fish were studied from deep-sea sediments of the... more Non-spiral coprolites likely produced by teleost fish were studied from deep-sea sediments of the Oligocene (Rupelian) of Poland. The materials were collected at the Futoma and Wola Czudecka localities of the Dynów Marl Member of the Menilite Formation, Western Carpathian Mountains. The coprolites are elongate, linear, slightly to strongly sinuous and vary in size (maximal diameter from 1.25 to 10 mm) but appear to show a morphologic continuum rather than represent several morphotypes. Phosphatic matrix is preserved in 81% (13/ 16) of the specimens and is composed primarily of putative fossilized bacteria. The matrix contains numerous cavities possibly formed by gas bubbles or decomposition of organic matter, and also an oval object resembling invertebrate eggs or another organic object. At least 81% (13/16) of the coprolite specimens contain fish remains (bones, scales, a tooth), which in some specimens include elements attributable to the predatory fishes Palimphyes, Oligophus and an indeterminate gadiform. This is indicative of fish predation upon other predatory fishes in this marine environment, which probably exceeded 500 m of depth. The coprolites are interpreted as produced by pelagic fish that lived in the oxygenated higher parts of the water column, while the fecal matter sank and was deposited in anoxic conditions on the sea bottom. Identification of non-spiral coprolites of fish and the fossil record of teleost coprolites are discussed.
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Bulletin of Geosciences, 2015
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Geological Quarterly, 2013
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The trace fossil Lepidenteron lewesiensis
(Mantell 1822) provides an exceptional taphonomic windo... more The trace fossil Lepidenteron lewesiensis
(Mantell 1822) provides an exceptional taphonomic window
to diversity of fishes as shown for the Upper Cretaceous
of Poland, in the Middle Turonian–Lower
Maastrichtian deposits of the Opole Trough, Miecho´w
Trough, Mazury-Podlasie Homocline, and SE part of the
Border Synclinorium. Lepidenteron lewesiensis is an unbranched
burrow lined with small fish scales and bones,
without a constructed wall. It contains scales, vertebrae,
and bones of the head belonging to ten taxa of teleostean
fishes: two undetermined teleosteans, six undetermined
Clupeocephala, one Dercetidae, and one undetermined
euteleostean. The preservation of fish remains suggests that
fishes were pulled down into the burrow by an animal,
probably by eunicid polychaetes.
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Vol 16(1) by Malgorzata Bienkowska-Wasiluk
Small perch-like fishes from the Oligocene of the Paratethys have been traditionally assigned to ... more Small perch-like fishes from the Oligocene of the Paratethys have been traditionally assigned to Serranus budensis (Heckel, 1856). A morphological revision of the holotype and specimens previously assigned to S. budensis from the Outer Carpathians, Poland, is provided herein. They are re-assigned to the species Oligoserranoides budensis (Heckel, 1856) — Percoidei incertae sedis. New specimens assigned to Ol. budensis from the Outer Carpathians, Poland, are introduced. Our results reveal that Ol. budensis is very similar to the species Caucasoserranoides morozkiensis, Carpathoserranoides brnoensis, Carpathoserranoides polonicus and Oligoserranoides comparabilis, and further studies are necessary to revise the validity of those species. Ol. budensis shares many characters with genera Lutjanus and Ocyurus of the superfamily Lutjanoidea. Ol. budensis differs from Lutjanoidea in having a toothless palatine. The palaeobiogeography of Oligocene small perch-like fishes in the Paratethys is presented and discussed.
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Papers by Malgorzata Bienkowska-Wasiluk
(Mantell 1822) provides an exceptional taphonomic window
to diversity of fishes as shown for the Upper Cretaceous
of Poland, in the Middle Turonian–Lower
Maastrichtian deposits of the Opole Trough, Miecho´w
Trough, Mazury-Podlasie Homocline, and SE part of the
Border Synclinorium. Lepidenteron lewesiensis is an unbranched
burrow lined with small fish scales and bones,
without a constructed wall. It contains scales, vertebrae,
and bones of the head belonging to ten taxa of teleostean
fishes: two undetermined teleosteans, six undetermined
Clupeocephala, one Dercetidae, and one undetermined
euteleostean. The preservation of fish remains suggests that
fishes were pulled down into the burrow by an animal,
probably by eunicid polychaetes.
Vol 16(1) by Malgorzata Bienkowska-Wasiluk
(Mantell 1822) provides an exceptional taphonomic window
to diversity of fishes as shown for the Upper Cretaceous
of Poland, in the Middle Turonian–Lower
Maastrichtian deposits of the Opole Trough, Miecho´w
Trough, Mazury-Podlasie Homocline, and SE part of the
Border Synclinorium. Lepidenteron lewesiensis is an unbranched
burrow lined with small fish scales and bones,
without a constructed wall. It contains scales, vertebrae,
and bones of the head belonging to ten taxa of teleostean
fishes: two undetermined teleosteans, six undetermined
Clupeocephala, one Dercetidae, and one undetermined
euteleostean. The preservation of fish remains suggests that
fishes were pulled down into the burrow by an animal,
probably by eunicid polychaetes.