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Zbigniew Ryziewicz (1898-1977)

100%

Czyzewska T.

Acta Palaeontologica Polonica

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1977

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tom 22

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nr 4

2

Oviraptorosaur tail forms and functions

84%

Persons,IV W. S., Currie P. J., Norell M. A.

Acta Palaeontologica Polonica

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2014

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tom 59

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nr 3

Oviraptorosaur caudal osteology is unique among theropods and is characterized by posteriorly persistent and exceptionally wide transverse processes, anteroposteriorly short centra, and a high degree of flexibility across the pre-pygostyle vertebral series. Three-dimensional digital muscle reconstructions reveal that, while oviraptorosaur tails were reduced in length relative to the tails of other theropods, they were muscularly robust. Despite overall caudal length reduction, the relative size of the M. caudofemoralis in most oviraptorosaurs was comparable with those of other non-avian theropods. The discovery of a second Nomingia specimen with a pygostyle confirms that the fused terminal vertebrae of the type specimen were not an abnormality. New evidence shows that pygostyles were also present in the oviraptorosaurs Citipati and Conchoraptor. Based on the observed osteological morphology and inferred muscle morphology, along with the recognition that many members of the group probably sported broad tail-feather fans, it is postulated that oviraptorosaur tails were uniquely adapted to serve as dynamic intraspecific display structures. Similarities, including a reduced vertebral series and a terminal pygostyle, between the tails of oviraptorosaurs and the tails of theropods widely accepted as basal members of the Avialae, appear to be convergences.

3

The osteology and ossification variability of the skull of Antarctic white-blooded fish Chaenodraco wilsoni Regan, 1914 [Channichthyidae, Notothenioidei]

84%

Zabrowski M.

Acta Ichthyologica et Piscatoria

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2000

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tom 30

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nr 2

A detailed osteological analysis of the skull of an Antarctic fish, Chaenodraco wilsoni Regan, 1914 (Channichthyidae, Notothenioidei) was done, focusing on the bone structure and osteological variability. A notable reduction of the ossification was observed, which took place in several ways: replacement of the whole bone with cartilage, only superficial ossification (e.g. in the ethmoid region), separation of the bones by wide cartilage areas (e.g. in the brain case), and reduction of bone dimensions. An extreme case was complete loss of the opisthootic-the first record of this kind within this family of fishes. The reduction of ossification in Ch. wilsoni resulted in high osteological variability that was observed in the case of reduced bones. Instances of asymmetry of paired elements of the skeleton were observed as well.

4

XV Sympozjum Sekcji Owadów Kopalnych PTEnt. Kraków, 16 listopada 1999 r.

67%

Kubisz D.

Wiadomości Entomologiczne

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1999

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tom 18

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nr 4

257-258

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New data on Soricomorpha (Lipotyphla, Mammalia) from the Pliocene and Pleistocene of Transbaikalia and Irkutsk Region (Russia)

67%

Rzebik-Kowalska B.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

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2007

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tom 50A

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nr 1-2

6

Supplement to the knowledge of Protopsyllidiidae [Homoptera, Psyllomorpha]

67%

Klimaszewski S. M.

Acta Biologica Silesiana

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1995

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tom 27

33-43

7

A nearly complete skeleton of the fossil galliform bird Palaeortyx from the late Oligocene of Germany

67%

Mayr G., Poschmann M., Wuttke M.

Acta Ornithologica

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2006

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tom 41

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nr 2

8

Taxonomic diversity and spatio-temporal distribution of late Cenozoic beavers (Castoridae, Rodentia) of Ukraine

67%

Rekovets L., Kopij G., Nowakowski D.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

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2009

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tom 52A

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nr 1-2

9

XVI Sympozjum Sekcji Owadów Kopalnych P. T. Ent. Kraków, 8 grudnia 2000 r.

67%

Kubisz D.

Wiadomości Entomologiczne

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2000

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tom 19

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nr 3-4

225-226

10

New species of Miocene psyllids [Homoptera, Psylloidea]

67%

Klimaszewski S. M.

Acta Biologica Silesiana

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1993

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tom 22

19-29

11

Giganty pelne energii

67%

Sabath K.

Academia. Magazyn Polskiej Akademii Nauk

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2005

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nr 3

8-11

12

Amphibians and squamate reptiles from the early Upper Pleistocene of Bois Roche Cave [Charente, Southwestern France]

67%

Blain H. A., Villa P.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

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2006

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tom 49A

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nr 1-2

13

Dorsal shell wall in ammonoids

67%

Kulicki C., Tanabe K., Landman N. H., Mapes R. H.

Acta Palaeontologica Polonica

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2001

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tom 46

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nr 1

In ammonoids, a soft body organ (possibly a supracephalicmantle fold), extending from the conch aperture secreted aragonitic wrinkles, forming a layer on the surface of the preceding whorl. The dorsal shell wall consists of the outer and inner components which were deposited sequentially, beginning at the aperture of the living chamber inwards. The dorsal wall attains its full thickness near the last septum. The outer component is visible in the apertural region and is smooth or wrinkled; it is called the wrinkled layer in the latter case. The wrinkles may be continuous, interrupted, or form isolated patches arranged in rows. The wrinkles are usually triangular in cross section. A further stage of dorsal wall development involves filling in the space between the apices of triangles, and then adding one or more inner prismatic layers from the inside of the living chamber. This pattern occurs at least in the postembryonic stage of all genera studied, belonging to five suborders of Ammonoidea ranging from Late Carboniferousto Late Cretaceous. In many genera, the outer component of the dorsal shell wall exhibits remarkable ontogenetic change in its ultrastructure and microornament. It may be compared with the black film of Recent Nautilus shells with respect to place of formation. The outer component of the ammonoid dorsal shell wall is regarded as a product of organic secretion and carbonate precipitation in the area of the supracephalic mantle fold.

14

The first record of Late Miocene bat from European Russia

67%

Rossina V. V., Kruskop S. V., Tesakov A. S., Titov V. V.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

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2006

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tom 49A

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nr 1-2

15

The tube wall of Cambrian anabaritids

67%

Kouchinsky A., Bengtson S.

Acta Palaeontologica Polonica

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2002

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tom 47

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nr 3

Celestite/barite−replaced and phosphate−replicated tubes of Early Cambrian anabaritids from the northern part of the Siberian Platform (Anabar Shield) give new evidence on the wall−structure of these enigmatic fossils. The walls consist of fibres, interpreted as reflecting an original aragonitic fabric. Bundles of fibres are arranged in growth lamellae, and the latter form an angle of at least 45° with the inner tube wall. Where the outer tube surface projects into annular flanges, the lamellae have a chevron−like section due to the backwards deflection of the outer parts. Anabaritids are usually referred to the Cnidaria or left without systematic assignment, but earlier suggestions included affinity to the serpulid polychaetes. The chevron structure resembles that previously exclusively known from serpulids, but the presence of internal tooth−like structures in anabaritid tubes, perhaps compromising up−and−down movement through the tubes, continue to make a direct assignment to the Serpulida questionable.

16

Early Paracamelus [Mammalia, Tylopoda] in Eastern Europe

67%

Titov V. V., Logvynenko V. N.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

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2006

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tom 49A

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nr 1-2

17

Andrzej Sulimski [1926-1997]

67%

Borsuk-Bialynicka M.

Acta Palaeontologica Polonica

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1997

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tom 42

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nr 4

18

Occurrence of Macroneomys brachygnathus Fejfar, 1966 in the British Middle Pleistocene, with a review of the status of Beremendia fissidens [Petenyi, 1864] in Britain [Mammalia, Lipotyphla Soricidae]

67%

Harrison D. L., Parfitt S. A., Stuart A. J.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

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2006

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tom 49A

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nr 1-2

19

Connecting ring structure and its significance for classification of the orthoceratid cephalopods

67%

Mutvei H.

Acta Palaeontologica Polonica

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2002

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tom 47

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nr 1

The connecting ring in orthoceratids is composed of two calcified layers: an outer spherulitic−prismatic and an inner calcified−perforate. The spherulitic−prismatic layer is a direct continuation of that layer in the septal neck, whereas the calcified−perforate layer is a structurally modified continuation of the nacreous layer of the septal neck. The latter layer is traversed by numerous pores which are oriented either transversally to the siphuncular surface, or have a somewhat irregularly anastomosing course. The connecting ring structure is positively correlated to the dorsal position of the scars of the cephalic retractor muscles. A similar type of connecting ring and a dorsal postion of retractor muscle scars also occur in lituitids, previously assigned to tarphyceratids, and in baltoceratids, previously assigned to ellesmeroceratids. These two taxa are therefore included in the suborder Orthoceratina, which, together with the suborder Actinoceratina, are assigned to the order Orthoceratida Kuhn, 1940.

20

The integument of Cambrian chancelloriids

67%

Bengtson S., Hou X.

Acta Palaeontologica Polonica

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2001

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tom 46

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nr 1

Details of the body surface of the chancelloriid Allonnia from the Lower Cambrian Chengjiang biota in southwestern China elucidate the nature of these enigmatic organisms. Rhombically arranged elements, about 30 x 60 ym, are interpreted as representing imbricating platelets, the distal ends of which projected as spinules from the body surface. Comparisons with other chancelloriids suggest that the flexible integument was continuous with the aragonitic sclerites that sit on the surface like cactus spines, and that both were formed by an epidermal epithelium secreting a continuous exo- and endocuticle. In the sclerites, the exocuticle was mineralized; the unmineralized endocuticle and cellular extensions from the epithelium filled the interior of the sclerites. In the flexible integument the epithelium was overlain by endocuticle and unmineralized exocuticle. This structure of soft integument and sclerites is at variance with proposals of poriferan or ascidian affinity of chancelloriids but in accord with a coeloscleritophoran model.

Ograniczanie wyników

Zbigniew Ryziewicz (1898-1977)

Oviraptorosaur tail forms and functions

The osteology and ossification variability of the skull of Antarctic white-blooded fish Chaenodraco wilsoni Regan, 1914 [Channichthyidae, Notothenioidei]

XV Sympozjum Sekcji Owadów Kopalnych PTEnt. Kraków, 16 listopada 1999 r.

New data on Soricomorpha (Lipotyphla, Mammalia) from the Pliocene and Pleistocene of Transbaikalia and Irkutsk Region (Russia)

Supplement to the knowledge of Protopsyllidiidae [Homoptera, Psyllomorpha]

A nearly complete skeleton of the fossil galliform bird Palaeortyx from the late Oligocene of Germany

Taxonomic diversity and spatio-temporal distribution of late Cenozoic beavers (Castoridae, Rodentia) of Ukraine

XVI Sympozjum Sekcji Owadów Kopalnych P. T. Ent. Kraków, 8 grudnia 2000 r.

New species of Miocene psyllids [Homoptera, Psylloidea]

Giganty pelne energii

Amphibians and squamate reptiles from the early Upper Pleistocene of Bois Roche Cave [Charente, Southwestern France]

Dorsal shell wall in ammonoids

The first record of Late Miocene bat from European Russia

The tube wall of Cambrian anabaritids

Early Paracamelus [Mammalia, Tylopoda] in Eastern Europe

Andrzej Sulimski [1926-1997]

Occurrence of Macroneomys brachygnathus Fejfar, 1966 in the British Middle Pleistocene, with a review of the status of Beremendia fissidens [Petenyi, 1864] in Britain [Mammalia, Lipotyphla Soricidae]

Connecting ring structure and its significance for classification of the orthoceratid cephalopods

The integument of Cambrian chancelloriids