Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 6

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: fossil fauna

Sortuj według:

Ogranicz wyniki do:

Stanowisko późnoczwartorzędowych osadów jaskiniowych : schronisko nad Jaskinią Zegar w Skalach Zegarowych (Wyżyna Częstochowska)

100%

Krajcarz M. T. , Sudoł M. , Krajcarz M. , Cyrek K.

tom Vol. 60, nr 10

s. 546--553

The Shelter above the Zegar Cave (Shelter No 388) (N 50°25’41” E 19°40’27”) is located in the Zegarowe Rocks ridge in the Ryczów Upland (southern part of the Czêstochowa Upland), municipalityWolbrom, district Olkusz. In 2009, Mrs. Jadwiga and Mr. Lucjan Wodarz found an archeological flint artifact in a type of leaf point at the slope below the Shelter. This finding allowed suspecting the presence of Palaeolithic cultural layers inside or near the Shelter. The authors’aim was to recognize the geological context of the Palaeolithic settlement of the Shelter above the Zegar Cave and its neighborhood, and in further perspective of the entire southern part of the Ryczów Upland micro-region. Four layers were discovered in the Shelter during field works (downward): I – humic silty loam, Holocene; II – loess altered by secondary soil processes during the Holocene; III – unaltered loess, dated to MOIS 2; IV – silty cave loam with limestone rubble, dated to MOIS 3. The chronostratigraphy is based on lithostratigraphy and confirmed by radiocarbon and thermoluminescence dating. An archaeological cultural level occurs in layer IV, most probably related to the shift from the Middle to Upper Palaeolithic. The sequence of cave sediments may be well correlated with numerous profiles of cave sites from the Kraków-Czêstochowa Upland.

A new species of rust fungi from the middle Eocene Sakhalinian amber

100%

Tykhonenko Y. , Hayova V. , Ignatov M. , Vasilenko D. , Perkovsky E. E.

nr 4

Burshtynogena fereci gen. and sp. nov. [Ephemeroptera: Heptageniidae] from Eocene Baltic amber

100%

Godunko R. J. , Sontag E.

nr 3

Burshtynogena fereci gen. and sp. nov. from Eocene Baltic amber is described and illustrated. Burshtynogena gen. nov. differs from other known Heptageniidae genera by the combination of the following characters: pterostigmatic area only with simple, not anastomoused veins; furcasternal protuberances of mesothorax almost rectangular; hind wing narrow (the width/length ratio = 0.45) with well developed venation; tarsal claws dissimilar on all legs; subgenital plate small, narrow, poorly developed, shallow sinuous; subanal plate with slightly concave posterior margin.

First record of a copemyine-peromyscine cricetid [ Rodentia, Mammalia ] in South America: hypotheses regarding its ancestry in the Palaearctic

100%

Fejfar O. , Ficcarelli G. , Mezzabotta C. , Moreno Espinosa M. , Rook L. , Torre D.

nr 1

Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

80%

Betts M. J. , Claybourn T. M. , Brock G. A. , Jago J. B. , Skovsted C. B. , Paterson J. R.

tom 64

nr 3

The lower Cambrian (Series 2) White Point Conglomerate (WPC) on Kangaroo Island, South Australia contains exotic clasts representing a diverse array of lithologies, including metamorphics, chert, sandstone, and abundant carbonates, notably archaeocyath-rich bioclastic limestone. Acetic acid digestion of the WPC bioclastic limestone clasts reveals a diverse shelly fauna. This assemblage includes abundant organophosphatic brachiopods such as Cordatia erinae Brock and Claybourn gen. et sp. nov., Curdus pararaensis, Eodicellomus elkaniformiis, Eohadrotreta sp. cf. E. zhenbaensis, Eoobolus sp., Kyrshabaktella davidii, and Schizopholis yorkensis. Additional shelly taxa include the solenopleurid trilobite Trachoparia? sp., the tommotiids Dailyatia odyssei, Dailyatia decobruta Betts sp. nov., Kelanella sp., and Lapworthella fasciculata, spines of the bradoriid arthropod Mongolitubulus squamifer, and several problematica, such as Stoibostrombus crenulatus and a variety of tubular forms. The upper age limit for the WPC is constrained by biostratigraphic data from the overlying Marsden Sandstone and Emu Bay Shale, which are no younger than the Pararaia janeae Trilobite Zone (Cambrian Series 2, Stage 4). The shelly fossil assemblage from the WPC limestone clasts indicates an upper Dailyatia odyssei Zone (= Pararaia tatei to lower P. janeae trilobite zones), equivalent to the Atdabanian–early Botoman of the Siberian scheme. This contrasts with the previously suggested late Botoman age for the limestone clasts, based on the diverse archaeocyath assemblage. The minor age difference between the WPC and its fossiliferous limestone clasts suggests relatively rapid reworking of biohermal buildups during tectonically-active phases of deposition in the Stansbury Basin.

Ontogeny and variation in the skull roof and braincase of the hadrosaurid dinosaur Maiasaura peeblesorum from the Upper Cretaceous of Montana, USA

70%

McFeeters B. , Evans D. C. , Maddin H. C.

nr 3