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1

Answer to 'Lower and Middle Cambrian Acritarch...'

100%
Jankauskas T.
Przegląd Geologiczny
|
1993
|
tom 41
|
nr 05
389-390
2

Lower and middle cambrian acritarch-based biozonation of the baltic syneclise and adjacent areas [East European Platform].

100%
Jankauskas T., Lendzion K.
Przegląd Geologiczny
|
1992
|
tom 40
|
nr 09
519-525
3

Biostratigraphic correlation of lower and middle cambrian sections in the Baltic syneclise and adjacent areas.

88%
Jankauskas T., Lendzion K.
Przegląd Geologiczny
|
1994
|
tom 42
|
nr 05
365-370
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Kambryjskie trylobity dzisiejszego obszaru Polski

75%
Szczepka K.
Wszechświat
|
2013
|
tom 114
|
nr 10-12
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Non-arthropod burrows from the Middle and Late Cambrian of the Holy Cross Mountains, Poland

75%
Orlowski S., Zylinska A.
Acta Palaeontologica Polonica
|
1996
|
tom 41
|
nr 4
385-409
During the Middle and Late Cambrian in the area of the present-day Holy Cross Mountains all the traces of infaunal activity were produced by animals burrowing parallel to and immediately below the sediment surface, deeper infaunal burrowers being missing. Deeper penetration was probably not possible due to anoxic conditions within the sediment. This was not the case in the Early Cambrian, where numerous deep vertical burrows with spreite structures are known in the area. Diversity of the Middle and Late Cambrian trace fossil assemblages of the Holy Cross Mts is low, with only six ichnogenera of non-arthropod traces in the Middle Cambrian and eight ichnogenera in the Late Cambrian, compared with 24 ichnogenera in the Early Cambrian. The most unusual is a large hemispherical burrow, possibly of actinian origin, for which the name Bergaueria elliptica isp. n. is proposed. Treptichnus rectangularis isp. n. represents horizontal burrows with stiff walls, being systems of short units connected with one another. Some of the units contain faecal pellets produced by the host animal.
6

Paleobiogeography of the lower cambrian deposits of Byelorussia.

75%
Piskun L., Zinowienko G.
Przegląd Geologiczny
|
1992
|
tom 40
|
nr 02
90-93
7
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Spatial organization of tubercles and terrace lines in Paradoxides forchhammeri - evidence of lateral inhibition

63%
Hammer O.
Acta Palaeontologica Polonica
|
2000
|
tom 45
|
nr 3
251-270
Spatial statistics on the positions of trilobite tubercles indicate the existence of a developmental spacing mechanism. Similar spacing between sensory bristles, due to lateral inhibition, is well known in insects, and the genetic basis for these patterns has been thoroughly studied. Tubercles (granules) in the Middle Cambrian trilobite Paradoxides forchhammeri are spaced out, but otherwise randomly positioned. Assuming that similar genetic principles are in operation for the positioning of peripheral neuronal elements in all arthropods, it can even be speculated that genes with functions similar to Delta, Notch, achaete and scute were active in trilobite cuticular patterning. Also, in P. forchhammeri, terrace lines (ridges) seem to display transitions into granulation, indicating that these two types of structure share an underlying pattern formation mechanism.
8

Analiza porownawcza ramienionogow z utworow kambru Gor Swietokrzyskich i platformy prekambryjskiej w Polsce

63%
Jendryka-Fuglewicz B.
Przegląd Geologiczny
|
1992
|
tom 40
|
nr 03
150-155
9
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Yunnanozoon and the ancestry of chordates

63%
Dzik J.
Acta Palaeontologica Polonica
|
1995
|
tom 40
|
nr 4
341-360
The oldest known chordate, Yunnanozoon lividum Hou et al. 1991, from the Chengjiang Lagerstätte of Yunnan shows several features in its anatomy that had not been expected to occur at this stage of evolution. Its metameric dorsal myomeres were separated by straight myosepta. The notochord was located ventrad of the muscular blocks instead of being bordered by them. The pharynx did not contain any filtratory basket but had only seven pairs of branchial arches. These were composed of rows of minute scleritic segments that connected the notochord with a rigid ventral trough. The head region was rather complex in organization and bore a specialized ring-like mouth apparatus. The presence of sensory organs, perhaps large eyes with sclerotic rings, is probable. Only in the remarkable elongation of the notochord and metameric arrangement of oval gonads this early chordate is similar to Branchiostoma. The anterior part of the muscular blocks of Yunnanozoon resembles a little the proboscis and collar of the enteropneusts and may perhaps be homologous with these structures, although in Yunnanozoon they are displaced much behind the mouth. The whole metameric muscular unit is proposed to correspond to the 'quilted pneu structure' of the Ediacaran problematic fossil Dickinsonia. Monotypic Yunnanozoa classis n., Yunnanozoida ordo n., and Yunnanozoidae fam n. are proposed for this early chordate.
10

Znaczenie sutury terranowej Zawiercie-Rzeszotary dla poznania kaledonskiego transpresyjnego gorotworu krakowidow

63%
Haranczyk C.
Prace Naukowe Uniwersytetu Śląskiego w Katowicach
|
1994
|
nr 1431
69-79
11

Świadkowie minionych epok - cz. III

63%
Lorenc M.
Bociek. Biuletyn Lubuskiego Klubu Przyrodników
|
1997
|
nr 3[51]
12

Kambryjskie Morze czyli skamienialosci sprzed 550 milionow lat

63%
Podlaski R., Wojdan D.
Parki Narodowe
|
1992
|
nr 4
13-14
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The Late Cambrian eocrinoid Cambrocrinus

51%
Dzik J., Orlowski S.
Acta Palaeontologica Polonica
|
1993
|
tom 38
|
nr 1-2
21-34
Morphology of the stem in Cambrocrinus regularis Orłowski 1968 from the early Late Cambrian of the Holy Cross Mts, with only one type of columnals in its proximal conical part but with well developed marginal fulcra connecting them alternately in pairs, places it in between the Middle Cambrian Acadocrinus and Late Cambrian Ridersia. In the presence of thecal ribbing with ribs radiating toward plate corners, which is definitely not homologous to the ribbing of Ridersia, Macrocystella, and later cystoids, it departs from the main eocrinoid lineage leading to the rhombiferans. A new family Cambrocrinidae is therefore proposed to include Cambrocrinus and Eocystites.
14
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Burgess Shale-type fossils in Cambrian sandstones of the Holy Cross Mountains

51%
Masiak M., Zylinska A.
Acta Palaeontologica Polonica
|
1994
|
tom 39
|
nr 4
329-340
15
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The Early Cambrian medusiform metazoan Eldonia from the Chengjiang Lagerstatte

51%
Jun-Juan C., Mao-Yan Z., Gui-Qing Z.
Acta Palaeontologica Polonica
|
1995
|
tom 40
|
nr 3
213-244
The alleged Chengjiang scyphozoans Stellostomites eumorphus and Yunnanomedusa eleganta are conspecific. Because of the strong resemblance to the Burgess Shale type species of Eldonia, the Chinese species is relocated to this genus. Eldonia, originally described as a holothurian, on anatomical grounds may as well be interpreted as a lophophorate. The superficial resemblance to jelly-fish is apparently a result of adaptation to pelagic life. Although the extant lophophorates are without exception sedentary, their pelagic relatives were probably abundant in the Early Paleozoic.
16
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Trilobite-like arthropod from the Lower Cambrian of the Siberian Platform

51%
Ivantsov A. Y.
Acta Palaeontologica Polonica
|
1999
|
tom 44
|
nr 4
455-466
The Lower Cambrian Fossil-Lagerstätte at Sinsk (Sinsk Formation, Lena River, Siberia) yields extraordinarily preserved fossils. A new trilobite-like arthopod from this site, Phytophilaspis pergamena gen. et sp. n., is assigned to the subclass Conciliterga Hou & Bergström, 1997, ordet and family indet. It is characterized by a large cephalon with facial sutures and relatively large eyes, strongly reduced thorax and very large pygidium. The facial sutures are not connected with the eyes; librigenae preserve marks of segmentation and may represent fused pleurae of the posterior segments of the cephalon. Unlike trilobites, the original mineralization of the carapace was very weak or absent. The new arthropod differs from all of other Conciliterga by the absence of rostral plate, posterior position of eyes and large size of the pygidium.
17

Wyżerka na kambryjskiej plaży

51%
Machalski M.
Wiedza i Życie
|
2008
|
nr 07
18
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Evolution of 'small shelly fossils' assemblages of the Early Paleozoic

45%
Dzik J.
Acta Palaeontologica Polonica
|
1994
|
tom 39
|
nr 3
247-313
19

Eksplozja fauny na Ziemi

38%
Dzieczkowski A.
Poradnik Gospodarski
|
1998
|
nr 07-08
65
20

Znaleziska okrzemek starszych niz kredowe

38%
Sieminska J.
Wszechświat
|
2000
|
tom 101
|
nr 10-12
248-253
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