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EN
Vertebrate remains, mostly nothosaurid vertebrae and long bones, archosaur partially preserved long bones and teeth (probably rauisuchid remains), fish teeth and scales, are described from the Lower Keuper Miedary Beds (Ladinian, Middle Triassic) of Miedary, Silesia, SW Poland. The analyzed vertebrate fossils were collected from three lithologically different types of deposits. The first assemblage, which contains nothosaurid and fish remains, occurs in yellowish dolomites, where poorly preseved invertebrate macrofossils were also found (marine bivalves and brachiopods). In grey-yellowish, sometimes greenish or red clays, rare isolated bones and teeth of large archosaur were found. In sandstone intercalations partially preserved and highly disarticulated fish fossils were identified. In all assemblages osteological remains are generally very well preserved. This new interesting vertebrate bones association from the upper part of the Middle Triassic marginal-marine strata of Poland has been correlated with age-equivalents from other regions of Europe.
EN
Newevidence on skull morphology of Kupferzellia and Wellesaurus made it possible to modify reconstructions of skull of the temnospondyl amphibian Tatrasuchus kulczyckii from the Middle Triassic of the Tatra Mountains. All these taxa probably represent a single lineage connecting Early Triassic members of the Capitosauroidae with the Late Triasssic Cyclotosaurinae. They evolved towards adaptation to relatively more onshore life. It is proposed that Tatrasuchus had more concave posterior margin of the skull and larger parietal foramen than previously assumed.
4
PL
W obrębie serii ilastej „retyku” w Krasiejowie koło Ozimka zidentyfikowany został poziom, zawierający liczne czaszki i fragmenty szkieletów kontynentalnych czworonogów (głównie ziemnowodnych). Dominują wielkie labiryntodonty Metoposaurus, tekodonty (fitozaury) Paleorhinus, pancerne roślinożerne tekodonty z rodziny Aetosauridae, drapieżne labiryntodonty z nadrodziny Capitosauroidea, oraz znane tylko z pojedynczych kości najpierwotniejsze dinozaury. Bardzo rzadkie są zęby ryb dwudysznych Ceratodus i łuski ryb ganoidowych. Szczątkom kręgowców towarzyszą liczne małże słodkowodne z grupy unionidów, a w próbkach mikropaleontologicznych w wielkiej obfitości występują ramienice, wskazujące na słodkowodne środowisko sedymentacji. Jest to typowy zespół fauny Paleorhinus, o niemal globalnym rozprzestrzenieniu ograniczonym czasowo do środkowej i późnej części karniku. Paleontologiczne datowanie warstw zlokalizowanych nad ostatnimi wystąpieniami gipsu oznacza konieczność rewizji stratygrafii i korelacji wiekowej tej części polskiego triasu.
EN
A new Paleorhinus/auna has been discovered in a grey claystone corresponding to the subsurface Drawno beds, which are exposed in a cement plant claypit at Krasiejów near Opole in southern Poland. The vertebrate assemblage of perfectly preserved skeletons, isolated skulls, and postcranial remains is dominated with labyrinthodonts Metoposaurus di&gnosticus, the phytosaur Paleorhinus sp. being the second in number. Aetosaurs are represented by an incomplete skull, scuta and fragmentary bones. One sacral bone most probably representing an early dinosaur related to Staurikosaurus or Chindesaurus and two incomplete maxilla with teeth showing serration parallel to the cusp have also been found. The Krasiejów assemblage includes also dipnoans Ceratodus, undetermined fish scales and teeth, numerous unionid bivalves, very abundant characean gyrogonites, and ostracods. The Paleorhinus species is relatively short-snouted and may represent an earlier stage in the evolution of the lineage than fhe populations from Blasensandstein in Franconia and other known Yz\eor\ńm\s faunas. This is consistent with the presence q/Metoposaurus diagnosticus, the species originally described from the Schilfsandstein, located below the Blasensandstein. An equivalent ofSchilfsandstein is known in boreholes drilled nearby the locality and the bone-bearing horizon is about 80 m above its top, and about 20 m above the last occurrence of gypsum in the section. Lehrberg Schichten in Germany seem thus to be its lateral equivalents, both presumably representing the final event in the middle to late Carnian eustatic cycle. The Paleorhinus/a""a was apparently persistent in the area, as an incomplete skeleton has been found about 8 m below the mostfossiliferous horizon, in a calcareous intercalation within red clays comparable with the German Rote Wand.
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