Ryszard Wrona | Polish Academy of Sciences (original) (raw)

Papers by Ryszard Wrona

Sahascolex labyrinthus gen. et sp. nov., as well as disarticulated sclerites, are described from ... more Sahascolex labyrinthus gen. et sp. nov., as well as disarticulated sclerites, are described from the Early Cambrian Sinsk Formation (Siberian Platform) at the Achchagyy Tuoydakh fossil-Lagerstätte. These remarkably well preserved arrays of plates and platelets display ornamentation identical to widely reported isolated sclerites assigned to Hadimopanella, Kaimenella, Milaculum, and Utahphospha. The precise relationship of the Palaeoscolecida to the priapulids or alterna-tively with the nematomorphs remains under discussion, but suggested is their systematic position within the superphy-lum Ecdysozoa, comprising moulting animals. Some of the described cuticular trunks exhibit distinction between the dorsal and ventral sides: nodular sclerites occur on the dorsal and spiny sclerites on the ventral sides of the worm body. Such a pattern of ornamentation may suggest adaptation for a level-bottom, vagile benthic and probably epifaunal mode of life. The Siberian palaeoscolecids are compar...

ABSTRACT: Molluscan fossils accompanied by familiar SSF have been recovered from

The Geology of Central Europe Volume 1: Precambrian and Palaeozoic

Nature, 1983

Based on recent developments in glioblastoma subtyping, we examined DARPP32 (PPP1R1B), a neuronal... more Based on recent developments in glioblastoma subtyping, we examined DARPP32 (PPP1R1B), a neuronal marker against STAT5 and STAT3 that are pro-oncogenic in glioblastoma. mRNA ratios of DARPP32, STAT1, STAT3, STAT5A and STAT5B were assessed in routinely diagnosed gliomas s including a series of glioblastomas from patients (n067) treated with chemoradiotherapy (temozolomide), out of which 88 % had sequencing validated IDH-negative disease. DARPP32/STAT1 (p00.0007), DARPP32/STAT3 (p0 0.0004) and DARPP32/STAT5B (p00.0039) ratios were significantly higher in grade II and III as compared to grade IV tumours. The same high ratios were also associated with absence of immunohistochemically assessed AKT/PKB phosphorylation and survivin protein expression. High DARPP32/ STAT3, DARPP32/STAT5B, and STAT5B/STAT3 ratios were associated with longer patient progression free (PFS) and overall survival (OS). Upon multivariate analysis, total/subtotal removal of the tumour (HR:0.431; 95%CI:0.241-0.771, Wald p 00.005), high DARPP32/STAT5B (HR:0.341; 95%CI:0.169-0.690; Wald p00.003) and STAT5B/STAT3 mRNA ratios (HR:0.480; 95%CI:0.280-0.824; Wald p0 0.008) were independent favorable parameters for prolonged PFS. Extent of surgery (HR:0.198; 95%CI:0.101-0.390; p< 0.001) and high DARPP32/STAT5A ratios (HR:0.320; 95%CI:0.160-0.638, p00.001) were independently predictive for longer OS. The presented approach is applicable for prospective validation and appears promising towards an effective glioblastoma patient stratification in addition to IDH mutations. These data may contribute to understanding the biology of gliomas with respect to their potential neuronal characteristics and justify STAT-inhibiting therapeutic interventions in the same tumour system.

Palaeontologica Polonica, 1996

... RYSZARD WRONA and ANDREY YU. ZHURAVLEV Wrona, R., and Zhuravlev, A.Vu. 1996. ...Andrey Yu. Zh... more ... RYSZARD WRONA and ANDREY YU. ZHURAVLEV Wrona, R., and Zhuravlev, A.Vu. 1996. ...Andrey Yu. Zhuravlev, Paleontological Institute, Russian Academy ofSciences, Profsoyuz-naya ulitsa 123, Moscow 1/7647, Russia. Received 18 December 1995. ...

palaeontologia.pan.pl

Page 1. RYSZARD WRONA UPPER SILURIAN-LOWER DEVONIAN CHITINOZOA FR.OM THE SUBSURFACE OF SOUTHEASTE... more Page 1. RYSZARD WRONA UPPER SILURIAN-LOWER DEVONIAN CHITINOZOA FR.OM THE SUBSURFACE OF SOUTHEASTERN POLAND (plates 24-37) WRONA, R. 1980: Upper SiIurian-Lower Devonian Chitinozoa from the subsurface of southeastern Poland. ...

Acta Palaeontologica Polonica, 2012

BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access t... more BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Acta Palaeontologica Polonica, 2012

BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access t... more BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Acta Palaeontologica Polonica, 1977

The fossil Charophyta from the Devonian sediments of Spitsbergen are­ here described for the firs... more The fossil Charophyta from the Devonian sediments of Spitsbergen are­ here described for the first time and classified to the species rank on the basis of thin sections.

Acta Geologica Polonica, 2004

Phosphatized palaeoscolecid cuticle fragments of Palaeoscolex lubovae sp. nov., P. spinosus sp. n... more Phosphatized palaeoscolecid cuticle fragments of Palaeoscolex lubovae sp. nov., P. spinosus sp. nov., Palaeoscolex sp. and Sahascolex labyrinthus gen. et sp. nov., as well as disarticulated sclerites, are described from the Early Cambrian Sinsk Formation (Siberian Platform) at the Achchagyy Tuoydakh fossil-Lagerstatte. These remarkably well preserved arrays of plates and platelets display ornamentation identical to widely reported isolated sclerites assigned to Hadimopanella, Kaimenella, Milaculum, and Utahphospha. The precise relationship of the Palaeoscolecida to the priapulids or alternatively with the nematomorphs remains under discussion, but suggested is their systematic position within the superphylum Ecdysozoa, comprising moulting animals. some of the described cuticular trunks exhibit distinction between the dorsal and ventral sides: nodular sclerites occur on the dorsal and spiny sclerites on the ventral sides of the worm body. Such a pattern of ornamentation may suggest a...

POLISH PALEONTOLOGICAL INVESTIGATIONS IN WEST ANTARCTICA IN 1986 Summary Paleontological studies ... more POLISH PALEONTOLOGICAL INVESTIGATIONS IN WEST ANTARCTICA IN 1986 Summary Paleontological studies carried out in the austral summer 1985-1986 in King George Island, South Shetland Islands (West Antarctica) dealt with the fossiliferous glacio-marine sediments cropping-out in the Melville Peninsula and Low Head area (Fig. 1 ). The sequence of glacio-marine sediments of the Melville Glaciation represented by the Cape Melville Formation ( 4-5) is best exposed in cliffs slopes of the Melville Peninsula (Fig. 1, see also cover photos): The sediments of the Cape Melville Formation contain abundant marine fossils, some of them in live position (22-23, 8, 4, 15, 10, 17-18, 24-25, 29-30, 32). Microfossils comprise frequent benthic foraminifers: Cyclammina (Fig. 5a), Globobulimina (Figs 5b, 6g), Haplophragmoides (Fig. 6e), Uvigerinella (Fig. 6f), planktonic foraminifers (Globigerinidae, Heterohelicidae), numerous diatoms; Actinoptychus, Asteromphalus, Coscinodiscus, Triceratium (Fig. 6c), Trina...

Erratic bould ers of Early Carnbrian age, occ urr ing withi n the Early Miocene glac io-rnarineCa... more Erratic bould ers of Early Carnbrian age, occ urr ing withi n the Early Miocene glac io-rnarineCape Melvi lle Formation on King George Island (So uth Shetland Island s), Antarctica, haveyielded lingul ate brachiopods including Eoobolus aff. elatus (Pelman, 1986), Karathelenapuru (Kruse, 1990) and Vandalotreta djagoran (Kruse , 1990). It is the firs t EarlyCambrian brac hiopo d ass emblage described from Antarctica . The faun a is closely similarto that from the late Early Cambrian (Toyo nia n) Wirrealp a and Aroo na Creek Limestones,Flinders Ranges, South Austra lia. The new family Eoobolidae is prop osed and the typespec ies of Eoobolus, E. triparilis (Matthew, 19(2) is re- fig ured. The evo lution of thebotsfordiid s and acro thelids is disc ussed in the light of the new materi al of Karathelenapuru, which is intermedia te in morph ology between Botsfordia and Eothe le. The superfamilyAcrot heloidea , is referred to the order Lingulida because of the similarities in musclesys tem,...

Acta Palaeontologica Polonica, 2004

Limestone erratics in the Early Miocene glacio-marine Cape Melville Formation of King George Isla... more Limestone erratics in the Early Miocene glacio-marine Cape Melville Formation of King George Island, Antarctica, have yielded Early and Middle Cambrian small skeletal fossils (SSF) accompanied by calcified cyanobacteria, archaeocyath and spiculate sponges, trilobites and echinoderms. The SSF assemblage comprises disarticulated sclerites of chancelloriids, halkieriids, tommotiids, lapworthellids, palaeoscolecids, hyolithelminths, lingulate brachiopods, helcionelloid molluscs, hyoliths, and bradoriids. All 24 described species are common to Antarctica and Australia. Most are recorded here from Antarctica for the first time, including Shetlandia multiplicata gen. et sp. nov. and two new species Byronia? bifida and Hadimopanella staurata. The lithological and fossil contents of the boulders are almost identical with autochthonous assemblages from the Shackleton Limestone in the Argentina Range and Transantarctic Mountains. Cambrian outcrops around the Weddell Sea are a plausible source ...

Polish Polar Research, 2003

Molluscan fossils accompanied by familiar SSF have been recovered from Early Cambrian limestone e... more Molluscan fossils accompanied by familiar SSF have been recovered from Early Cambrian limestone erratics in the Early Miocene glaciomarine Cape Melville For− mation of King George Island, West Antarctica. The molluscan fauna comprises the hyoliths Conotheca, Microcornus, Parkula, Hyptiotheca, “Hyolithes”, the helcionelloids ?Pararacornus, Yochelcionella, Anabarella, the low dextrally coiled Pelagiella and the high helically coiled Beshtashella, as well as the problematic mollusc Cupitheca. Most of described species are recorded here for the first time from Antarctica. The lithological and fossil contents of the erratics are almost the same as from autochthonous successions the Shackleton Limestone in the Argentina Range and Transantarctic Mountains. Early Cam− brian outcrops around the Weddell Sea are a probable source of the erratic boulders. The Antarctic fauna is very similar to that from uppermost Botomian and Toyonian carbonate deposits in the Cambrian Basins of South Australia...

Morphology and inner structure of vesicles were studied by SEM in several chitinozoan species. Te... more Morphology and inner structure of vesicles were studied by SEM in several chitinozoan species. Ten distinct. types of vesicle surface sculpture are defined. Vesicle surface sculpture is supposed to be promising for chitinozoan taxonomy. Wall ornamentation and structure are described in various chitinozoan species. These characteristics support the idea of a planktic mode of life of some chitinozoans. Mechanic and organogenic perforation is recognized in chitinozoan vesicles. Vesicle internal structures called as "opisthosome" and "mesosome" are recognized for artifacts. The structure and position of operculum indicate that this was a rigid and fixed element separating the vesicle central cavity from the external environment, aimed to be opened for once. Variation in the mode of aggregation of vesicles and in their wall structure is suggestive of a variability in wall formation among chitinozoans. Analysis of vesicle microarchitecture permits a conclusion that Chi...

From FrasniaJIl strata pierced by the Opole Lubelskie borehole in the sQuth-eaiStel'n Poland,... more From FrasniaJIl strata pierced by the Opole Lubelskie borehole in the sQuth-eaiStel'n Poland, 10 polychaete jaw apparatuses are des'cl'ibed. For these ap­ paratuses, 7 new ,species aJnd 3 new genera are proposed: Multiprion opolensis n.gen., n.,sp., MochtyeZla kielanae n.s-p., Xanioprion waZliseri In.sp., Processoprion longiproces­ sus n.gen., n.sp., Polychaetaspis hindei n.sp., Kielanoprion elleri n.sp., and Hinde­ oprion basalaris In.gen., n.,sp. Moreover, 4 new species and 3 new genera of isolated polychaete jaws are described: Langeites lublinensis n.Sip., Trianguligenys n.gen., Uncinogenys uncinatus n.gen., n.Sip., Serratula minutidentata n.gen., n.sp., and Ser­ ratula longidentata n.Sip. The problems of taxonomy of fossil polychaetes are discus­ sed and 'necessity of further application of two independent systematics, one for sC'olecodonts and other for jaw apparatuses, is emrpha,sized.

K e y w o r d s : Antarctica, glacial erratics, Cambrian fossils, paleogeography.

Sahascolex labyrinthus gen. et sp. nov., as well as disarticulated sclerites, are described from ... more Sahascolex labyrinthus gen. et sp. nov., as well as disarticulated sclerites, are described from the Early Cambrian Sinsk Formation (Siberian Platform) at the Achchagyy Tuoydakh fossil-Lagerstätte. These remarkably well preserved arrays of plates and platelets display ornamentation identical to widely reported isolated sclerites assigned to Hadimopanella, Kaimenella, Milaculum, and Utahphospha. The precise relationship of the Palaeoscolecida to the priapulids or alterna-tively with the nematomorphs remains under discussion, but suggested is their systematic position within the superphy-lum Ecdysozoa, comprising moulting animals. Some of the described cuticular trunks exhibit distinction between the dorsal and ventral sides: nodular sclerites occur on the dorsal and spiny sclerites on the ventral sides of the worm body. Such a pattern of ornamentation may suggest adaptation for a level-bottom, vagile benthic and probably epifaunal mode of life. The Siberian palaeoscolecids are compar...

ABSTRACT: Molluscan fossils accompanied by familiar SSF have been recovered from

The Geology of Central Europe Volume 1: Precambrian and Palaeozoic

Nature, 1983

Based on recent developments in glioblastoma subtyping, we examined DARPP32 (PPP1R1B), a neuronal... more Based on recent developments in glioblastoma subtyping, we examined DARPP32 (PPP1R1B), a neuronal marker against STAT5 and STAT3 that are pro-oncogenic in glioblastoma. mRNA ratios of DARPP32, STAT1, STAT3, STAT5A and STAT5B were assessed in routinely diagnosed gliomas s including a series of glioblastomas from patients (n067) treated with chemoradiotherapy (temozolomide), out of which 88 % had sequencing validated IDH-negative disease. DARPP32/STAT1 (p00.0007), DARPP32/STAT3 (p0 0.0004) and DARPP32/STAT5B (p00.0039) ratios were significantly higher in grade II and III as compared to grade IV tumours. The same high ratios were also associated with absence of immunohistochemically assessed AKT/PKB phosphorylation and survivin protein expression. High DARPP32/ STAT3, DARPP32/STAT5B, and STAT5B/STAT3 ratios were associated with longer patient progression free (PFS) and overall survival (OS). Upon multivariate analysis, total/subtotal removal of the tumour (HR:0.431; 95%CI:0.241-0.771, Wald p 00.005), high DARPP32/STAT5B (HR:0.341; 95%CI:0.169-0.690; Wald p00.003) and STAT5B/STAT3 mRNA ratios (HR:0.480; 95%CI:0.280-0.824; Wald p0 0.008) were independent favorable parameters for prolonged PFS. Extent of surgery (HR:0.198; 95%CI:0.101-0.390; p< 0.001) and high DARPP32/STAT5A ratios (HR:0.320; 95%CI:0.160-0.638, p00.001) were independently predictive for longer OS. The presented approach is applicable for prospective validation and appears promising towards an effective glioblastoma patient stratification in addition to IDH mutations. These data may contribute to understanding the biology of gliomas with respect to their potential neuronal characteristics and justify STAT-inhibiting therapeutic interventions in the same tumour system.

Palaeontologica Polonica, 1996

... RYSZARD WRONA and ANDREY YU. ZHURAVLEV Wrona, R., and Zhuravlev, A.Vu. 1996. ...Andrey Yu. Zh... more ... RYSZARD WRONA and ANDREY YU. ZHURAVLEV Wrona, R., and Zhuravlev, A.Vu. 1996. ...Andrey Yu. Zhuravlev, Paleontological Institute, Russian Academy ofSciences, Profsoyuz-naya ulitsa 123, Moscow 1/7647, Russia. Received 18 December 1995. ...

palaeontologia.pan.pl

Page 1. RYSZARD WRONA UPPER SILURIAN-LOWER DEVONIAN CHITINOZOA FR.OM THE SUBSURFACE OF SOUTHEASTE... more Page 1. RYSZARD WRONA UPPER SILURIAN-LOWER DEVONIAN CHITINOZOA FR.OM THE SUBSURFACE OF SOUTHEASTERN POLAND (plates 24-37) WRONA, R. 1980: Upper SiIurian-Lower Devonian Chitinozoa from the subsurface of southeastern Poland. ...

Acta Palaeontologica Polonica, 2012

BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access t... more BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Acta Palaeontologica Polonica, 2012

BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access t... more BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Acta Palaeontologica Polonica, 1977

The fossil Charophyta from the Devonian sediments of Spitsbergen are­ here described for the firs... more The fossil Charophyta from the Devonian sediments of Spitsbergen are­ here described for the first time and classified to the species rank on the basis of thin sections.

Acta Geologica Polonica, 2004

Phosphatized palaeoscolecid cuticle fragments of Palaeoscolex lubovae sp. nov., P. spinosus sp. n... more Phosphatized palaeoscolecid cuticle fragments of Palaeoscolex lubovae sp. nov., P. spinosus sp. nov., Palaeoscolex sp. and Sahascolex labyrinthus gen. et sp. nov., as well as disarticulated sclerites, are described from the Early Cambrian Sinsk Formation (Siberian Platform) at the Achchagyy Tuoydakh fossil-Lagerstatte. These remarkably well preserved arrays of plates and platelets display ornamentation identical to widely reported isolated sclerites assigned to Hadimopanella, Kaimenella, Milaculum, and Utahphospha. The precise relationship of the Palaeoscolecida to the priapulids or alternatively with the nematomorphs remains under discussion, but suggested is their systematic position within the superphylum Ecdysozoa, comprising moulting animals. some of the described cuticular trunks exhibit distinction between the dorsal and ventral sides: nodular sclerites occur on the dorsal and spiny sclerites on the ventral sides of the worm body. Such a pattern of ornamentation may suggest a...

POLISH PALEONTOLOGICAL INVESTIGATIONS IN WEST ANTARCTICA IN 1986 Summary Paleontological studies ... more POLISH PALEONTOLOGICAL INVESTIGATIONS IN WEST ANTARCTICA IN 1986 Summary Paleontological studies carried out in the austral summer 1985-1986 in King George Island, South Shetland Islands (West Antarctica) dealt with the fossiliferous glacio-marine sediments cropping-out in the Melville Peninsula and Low Head area (Fig. 1 ). The sequence of glacio-marine sediments of the Melville Glaciation represented by the Cape Melville Formation ( 4-5) is best exposed in cliffs slopes of the Melville Peninsula (Fig. 1, see also cover photos): The sediments of the Cape Melville Formation contain abundant marine fossils, some of them in live position (22-23, 8, 4, 15, 10, 17-18, 24-25, 29-30, 32). Microfossils comprise frequent benthic foraminifers: Cyclammina (Fig. 5a), Globobulimina (Figs 5b, 6g), Haplophragmoides (Fig. 6e), Uvigerinella (Fig. 6f), planktonic foraminifers (Globigerinidae, Heterohelicidae), numerous diatoms; Actinoptychus, Asteromphalus, Coscinodiscus, Triceratium (Fig. 6c), Trina...

Erratic bould ers of Early Carnbrian age, occ urr ing withi n the Early Miocene glac io-rnarineCa... more Erratic bould ers of Early Carnbrian age, occ urr ing withi n the Early Miocene glac io-rnarineCape Melvi lle Formation on King George Island (So uth Shetland Island s), Antarctica, haveyielded lingul ate brachiopods including Eoobolus aff. elatus (Pelman, 1986), Karathelenapuru (Kruse, 1990) and Vandalotreta djagoran (Kruse , 1990). It is the firs t EarlyCambrian brac hiopo d ass emblage described from Antarctica . The faun a is closely similarto that from the late Early Cambrian (Toyo nia n) Wirrealp a and Aroo na Creek Limestones,Flinders Ranges, South Austra lia. The new family Eoobolidae is prop osed and the typespec ies of Eoobolus, E. triparilis (Matthew, 19(2) is re- fig ured. The evo lution of thebotsfordiid s and acro thelids is disc ussed in the light of the new materi al of Karathelenapuru, which is intermedia te in morph ology between Botsfordia and Eothe le. The superfamilyAcrot heloidea , is referred to the order Lingulida because of the similarities in musclesys tem,...

Acta Palaeontologica Polonica, 2004

Limestone erratics in the Early Miocene glacio-marine Cape Melville Formation of King George Isla... more Limestone erratics in the Early Miocene glacio-marine Cape Melville Formation of King George Island, Antarctica, have yielded Early and Middle Cambrian small skeletal fossils (SSF) accompanied by calcified cyanobacteria, archaeocyath and spiculate sponges, trilobites and echinoderms. The SSF assemblage comprises disarticulated sclerites of chancelloriids, halkieriids, tommotiids, lapworthellids, palaeoscolecids, hyolithelminths, lingulate brachiopods, helcionelloid molluscs, hyoliths, and bradoriids. All 24 described species are common to Antarctica and Australia. Most are recorded here from Antarctica for the first time, including Shetlandia multiplicata gen. et sp. nov. and two new species Byronia? bifida and Hadimopanella staurata. The lithological and fossil contents of the boulders are almost identical with autochthonous assemblages from the Shackleton Limestone in the Argentina Range and Transantarctic Mountains. Cambrian outcrops around the Weddell Sea are a plausible source ...

Polish Polar Research, 2003

Molluscan fossils accompanied by familiar SSF have been recovered from Early Cambrian limestone e... more Molluscan fossils accompanied by familiar SSF have been recovered from Early Cambrian limestone erratics in the Early Miocene glaciomarine Cape Melville For− mation of King George Island, West Antarctica. The molluscan fauna comprises the hyoliths Conotheca, Microcornus, Parkula, Hyptiotheca, “Hyolithes”, the helcionelloids ?Pararacornus, Yochelcionella, Anabarella, the low dextrally coiled Pelagiella and the high helically coiled Beshtashella, as well as the problematic mollusc Cupitheca. Most of described species are recorded here for the first time from Antarctica. The lithological and fossil contents of the erratics are almost the same as from autochthonous successions the Shackleton Limestone in the Argentina Range and Transantarctic Mountains. Early Cam− brian outcrops around the Weddell Sea are a probable source of the erratic boulders. The Antarctic fauna is very similar to that from uppermost Botomian and Toyonian carbonate deposits in the Cambrian Basins of South Australia...

Morphology and inner structure of vesicles were studied by SEM in several chitinozoan species. Te... more Morphology and inner structure of vesicles were studied by SEM in several chitinozoan species. Ten distinct. types of vesicle surface sculpture are defined. Vesicle surface sculpture is supposed to be promising for chitinozoan taxonomy. Wall ornamentation and structure are described in various chitinozoan species. These characteristics support the idea of a planktic mode of life of some chitinozoans. Mechanic and organogenic perforation is recognized in chitinozoan vesicles. Vesicle internal structures called as "opisthosome" and "mesosome" are recognized for artifacts. The structure and position of operculum indicate that this was a rigid and fixed element separating the vesicle central cavity from the external environment, aimed to be opened for once. Variation in the mode of aggregation of vesicles and in their wall structure is suggestive of a variability in wall formation among chitinozoans. Analysis of vesicle microarchitecture permits a conclusion that Chi...

From FrasniaJIl strata pierced by the Opole Lubelskie borehole in the sQuth-eaiStel'n Poland,... more From FrasniaJIl strata pierced by the Opole Lubelskie borehole in the sQuth-eaiStel'n Poland, 10 polychaete jaw apparatuses are des'cl'ibed. For these ap­ paratuses, 7 new ,species aJnd 3 new genera are proposed: Multiprion opolensis n.gen., n.,sp., MochtyeZla kielanae n.s-p., Xanioprion waZliseri In.sp., Processoprion longiproces­ sus n.gen., n.sp., Polychaetaspis hindei n.sp., Kielanoprion elleri n.sp., and Hinde­ oprion basalaris In.gen., n.,sp. Moreover, 4 new species and 3 new genera of isolated polychaete jaws are described: Langeites lublinensis n.Sip., Trianguligenys n.gen., Uncinogenys uncinatus n.gen., n.Sip., Serratula minutidentata n.gen., n.sp., and Ser­ ratula longidentata n.Sip. The problems of taxonomy of fossil polychaetes are discus­ sed and 'necessity of further application of two independent systematics, one for sC'olecodonts and other for jaw apparatuses, is emrpha,sized.

K e y w o r d s : Antarctica, glacial erratics, Cambrian fossils, paleogeography.