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Wyświetlanie 1-5 z 5
Tytuł:
New data about Matonia braunii (Göppert) Harris from the Early Jurassic of Poland and its ecology
Autorzy:
Barbacka, M.
Pacyna, G.
Pieńkowski, G.
Ziaja, D.
Powiązania:
https://bibliotekanauki.pl/articles/2060525.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polska
Holy Cross Mountains
Hettangian
Matonia
Opis:
Fern remains of matoniacean affinity were found in the Lower Hettangian strata of lacustrine/backswamp origin from the Niekłań PGI 1 borehole (central Poland, Holy Cross Mts.). The preserved fragments have been identified as Matonia braunii (Göppert, 1841) Harris, 1980. The remains suggest a rather small, low-growth plant with palmately compound fronds. The sori contain at least 5 sporangia preserved with well-developed annuli. The spores are triangular, trilete and kyrtomate, with a thin and smooth surface corresponding with dispersed Dictyophyllidites mortoni (de Jersey, 1959) Playford et Dettmann, 1965. Based on the gross morphology of sterile and fertile pinnae, suggestions made by Harris (1980) on the synonymy of Phlebopteris braunii (Göppert, 1841) Hirmer et Hörhammer, 1936 with P. muensteri Schenk, 1867 (Hirmer and Hörhammer, 1936) and their referral to Matonia braunii is proved and confirmed in this paper. The fern occurs in strata indicating a warm and humid climate and approaching transgression resulting in a high water table and the enhanced accumulation of organic matter.
Źródło:
Geological Quarterly; 2016, 60, 4; 857--868
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New ornithischian dinosaur footprints in the Jurassic of Poland
Autorzy:
Gierliński, G.
Gaździcka, E.
Niedźwiedzki, G.
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2059274.pdf
Data publikacji:
2001
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polska
Hettangian
Kimmeridgian
Ornithischia
dinosaurs
footprints
Opis:
New stratigraphic horizons with the ornithischian footprints have been found in central Poland. Basal thyreophoran ichnites are reported from the middle Hettangian Skloby Formation of Gromadzice. They support the previous conclusion that small and medium-sized Early Jurassic ornithischians preferred a coastal habitat with low-rise vegetation. Another find, an ornithopod footprint, came from the early Kimmeridgian Glowaczow Formation of Ozarow quarry. The track was discovered within the shallow-marine succession of calcareous deposits, which contributes to the interpretation of synsedimentary emersion of that area during the early Kimmeridgian.
Źródło:
Geological Quarterly; 2001, 45, 2; 205-210
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A dinosaur track assemblage from the Upper Hettangian (Lower Jurassic) marginal-marine deposits of Zapniów, Holy Cross Mountains, Poland
Autorzy:
Niedźwiedzki, G.
Pieńkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/2060538.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
dinosaur tracks
Przysucha Ore-bearing Formation
Upper Hettangian
Lower Jurassic
Holy Cross Mountains
Polska
Opis:
Upper Hettangian (Lower Jurassic) marginal-marine Przysucha Ore-bearing Formation exposed at Zapniów mine and clay-pit (northwestern part of the Holy Cross Mountains area, central Poland) revealed an interesting assemblage of dinosaur tracks. Although mostly yielding poorly preserved and isolated tracks probably left in shallow water conditions, the site nevertheless indicates a diversity of early saurischian (theropods and sauropodomorphs) and ornithischian (thyreophorans) dinosaur trackmakers. This new assemblage is partly consistent with the Lower-Middle Hettangian ichnorecord from the same region. The tracks are preserved in sediments of a barrier-foreshore origin within a barrier/lagoonal depositional system, belonging to the highstand systems tract, located below a marked erosional surface (sequence boundary), which is associated with a substantial fall in sea level at the end of Hettangian times. Here we described all previously and newly collected or observed in the field dinosaur tracks from both surface and underground exposures at Zapniów. Four ichnospecies: Grallator isp., Anchisauripus isp., cf. Tetrasauropus isp., and cf. Anomoepus isp. were identified. The theropod and ornithischian tracks show distinct similarities to those described from the richest in this region and most famous Gliniany Las dinosaur track assemblage, in age approximately coeval to Zapniów. Two sizes of theropod tracks (small and medium) indicate the presence of two different size classes or species of predators in this area. The described cf. Tetrasauropus isp. from Zapniów is the first unquestioned evidence of basal sauropodomorphs in the Upper Hettangian of the Holy Cross Mountains and first record of this ichnotaxa in the Lower Jurassic of Poland. Additionally, two theropod trackways (Anchisauripus isp.) show evidence for trotting. The new finds suggest similarities between marginal-marine environments (delta-plain and foreshore-barrier/lagoon lithofacies) association of dinosaurs containing low-browsing thyreophorans accompanied by small or juvenile sauropodomorphs and small to medium sized theropods. Presence of the ornithischian footprints suggests their prominent role as a major component in Middle-Upper Hettangian dinosaur faunas in marginal-marine environments dominating in the region.
Źródło:
Geological Quarterly; 2016, 60, 4; 840--856
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Invertebrate trace fossil assemblages from the Lower Hettangian of Sołtyków, Holy Cross Mountains, Poland
Autorzy:
Pieńkowski, G.
Niedźwiedzki, G.
Powiązania:
https://bibliotekanauki.pl/articles/2061345.pdf
Data publikacji:
2008
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Hettangian, Lower Jurassic
invertebrate trace fossils
bivalves
crayfishes
insects
continental ichnofacies
Holy Cross Mountains
Polska
Opis:
Invertebrate trace fossil assemblages from the Hettangian (Early Jurassic) alluvial plain deposits of Sołtyków (Holy Cross Mts, Poland) represent three terrestrial ichnofacies: the Mermia ichnofacies (entirely aquatic), Scoyenia ichnofacies, and Coprinisphaera ichnofacies. They span environments from shallow lacustrine to different subaerial fluvial environments. Bivalve burrows and traces, oligochaetae, insect and crayfishes burrows, plant roots, vertebrate tracks and other types of trace fossils record information on biodiversity and palaeoecological conditions. The Sołtykow ichnoassemblages confirm that terrestrial ichnocoenoses were quite diversified, chiefly a result of a changing water table and food availability. Diversity of trace fossils was supported by the strongly mosaic character of local environments. Bivalve burrows are very diversified, and several ichnogenera have been distinguished. Trace fossil producers as well as functional, taphonomic and preservational aspects of ichnofossils are discussed. The following ichnotaxa have been recognized: Lockeia siliquaria James, 1879; L. amygdaloides (Seilacher, 1953); L. czarnockii (Karaszewski, 1974); Scalichnus isp.; Scoyenia isp.; Spongeliomorpha isp.; Spongeliomorpha carlsbergi (Bromley and Asgaard, 1979); Cruziana problematica (Schindewolf, 1921); cf. Cruziana isp.; Rusophycus isp.; Diplichnites isp.; cf. Kouphichnium sp.; Planolites isp.; Palaeophycus isp.; Cochlichnus isp.; cf. Helminthoidichnites isp.; cf. Xylonichnus isp., and Linckichnus terebrans Schlirf, 2006. Various structures attributed to arthropod burrows (vertical to subvertical tunnels), chambered insect nests of Pallichnidae affinity or other nests with septa, earthworm burrows as well as enigmatic radial chambers, likely made by crayfishes, are illustrated. The new bivalve dwelling ichnotaxon Calceoformites uchmani igen. et isp. n. is described.
Źródło:
Volumina Jurassica; 2008, 6, 1; 109--132
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Borkowice – światowej klasy stanowisko paleontologiczne z tropami i kośćmi wczesnojurajskich dinozaurów
Borkowice – a world-class paleontological site with footprints and bones of Early Jurassic dinosaurs
Autorzy:
Pieńkowski, Grzegorz
Niedźwiedzki, Grzegprz
Powiązania:
https://bibliotekanauki.pl/articles/2076141.pdf
Data publikacji:
2021
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
tropy dinozaurów
unikatowa konserwacja
odlewy kostne
złoża barierowo-lagunowe
hetang
Polska
geodziedzictwo
dinosaur footprints
unique preservation
bone casts
barrier-lagoon deposits
Hettangian
Polska
geoheritage
Opis:
As part of the implementation of the Polish Geological Survey numerous and perfectly preserved dinosaur footprints were discovered in the upper Hettangian (Lower Jurassic) barrier-lagoon deposits, outcropping in the ceramic clay pit in Borkowice (Przysucha County, Poland). A large part of the specimens shows (especially visible in 3D scans) three-dimensional natural casts of dinosaur feet, on which anatomical features and impressions of the scaly skin are preserved in unusual details. These are the best-preserved traces of dinosaurs so far discovered in Poland and the quality of their preservation is equal to the best-known discoveries worldwide. In order for such a state of preservation to be possible, a very special sequence of sedimentary/taphonomic events had to take place in a very short time. The collection also includes records of ethology (behaviour) left by dinosaurs running, swimming, resting and sitting on a muddy sediment, as well as many enigmatic biogenic structures, probably related to various life activities of dinosaurs living there. So far, several hundred dinosaur tracks, representing at least seven different species of these animals have been collected and secured in Borkowice, and the prospects for new finds are much more promising. Unique bone remains of ornithischian dinosaurs preserved in the form of casts have also been found. It is necessary to act in cooperation with local authorities and the entrepreneur exploiting the clay deposits in order to secure and protect the geoheritage site.
Źródło:
Przegląd Geologiczny; 2021, 69, 11; 716--720
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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