Wyniki wyszukiwania

1

Pattern of bird bone fragmentation in pellets of the Long-eared Owl Asio otus and its taphonomic implications

100%

Bochenski Z. M., Tomek T.

Acta Zoologica Cracoviensia

|

1994

|

tom 37

|

nr 1

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Triassic coleoid beaks and other structures from the Calcareous Alps revisited

80%

Doguzhaeva L. A., Summesberger H., Brandstaetter F., Gruber D., Tintori A.

Acta Palaeontologica Polonica

|

2022

|

tom 67

|

nr 3

3

Functional morphology and taphonomy of nautiloid beaks from the Middle Triassic of Southern Germany

70%

Klug C.

Acta Palaeontologica Polonica

|

2001

|

tom 46

|

nr 1

New records of nautiloid beak elements conventionally classified as 'Rhyncholithes hirundo (Biguet, 1819)' and 'Conchorhynchus avirostris (von Schlotheim, 1820)' with carbonised (originally chitinous) three-dimensionally preserved appendages from the Upper Muschelkalk (Middle Triassic) of northern Württemberg (Southwest Germany) enable restoration of the complete beak of Germanonautilus. In three specimens, the lower mandible is embedded within the living chamber of Germanonautilus conchs, Beak elements of Germanonautilus differ from those of Recent Nautilus in the more elongate appendages of the fossil lower mandibles and the weaker sculpture on the originally chitinous parts. Furthermore, the dorsal sculpture of the fossil conchorhynchs consists of ridges rather than denticles and the ventral sculpture of the fossil rhyncholiths displays ridges in places where the Recent rhyncholiths have a smooth surface. Additionally, the fossil beak elements attained a larger size than their Recent counterparts, During transport of 'Rhyncholithes hirundo', the light chitinous parts served as a sail and the heavier conchorhynch anchored in the sediment causing alignment. In contrast to the irregularly embedded isolated rhyncholiths, the conchorhynchs usually settled with their ventral side up. From the study of 407 fossil nautiloid beak-elements, a significant variability of the hard parts is evident. Consequently, the assignment of specific morphologies to the species of Germanonautilus is impossible.

4

Badania nad wzrostem masy i wymiarów ciała kaczek

61%

Wawro E., Brzozowski W., Michalik D.

Acta Academiae Agriculturae ac Technicae Olstenensis. Zootechnica

|

1988

|

tom 31

Ograniczanie wyników

2 Acta Palaeontologica Polonica

1 Acta Academiae Agriculturae ac Technicae Olstenensis. Zootechnica

1 Acta Zoologica Cracoviensia

1 Bochenski Z. M.

1 Brandstaetter F.

1 Brzozowski W.

1 Doguzhaeva L. A.

1 Gruber D.

1 Klug C.

1 Michalik D.

1 Summesberger H.

1 Tintori A.

1 Tomek T.

1 Wawro E.

1 2022

1 2001

1 1994

1 1988

Pattern of bird bone fragmentation in pellets of the Long-eared Owl Asio otus and its taphonomic implications

Triassic coleoid beaks and other structures from the Calcareous Alps revisited

Functional morphology and taphonomy of nautiloid beaks from the Middle Triassic of Southern Germany

Badania nad wzrostem masy i wymiarów ciała kaczek