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    Tytuł:
    Exceptional soft-tissue preservation in boring ctenostome bryozoans and associated “fungal” borings from the Early Devonian of Podolia, Ukraine
    Autorzy:
    Olempska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/21117.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    soft tissue preservation
    ctenostome bryozoan
    bryozoan
    Early Devonian
    Devonian
    paleontology
    Podolia
    Ukraine
    Bryozoa
    fungi
    demineralization
    phosphatization
    Opis:
    Colonies of boring ctenostome bryozoans and microborings of “fungi” that occur in the Early Devonian (Lochkovian, ~416 Ma) of Podolia, western Ukraine, have soft−tissue preserved by phosphatization. These comprise exceptional three−dimensional body walls of feeding zooids with probable parietal muscles inserted on the cystid wall, and setigerous collars twisted within the vestibulum. The presence of collars in this Early Devonian ctenostomes proves the existence of this feature for more than 416 Ma of ctenostome evolution. Phosphatized remains of the zooid walls are interpreted as relicts of the originally chitinous cystid walls. This is the first record of soft−tissue fossilization in a boring bryozoan. The presence of cavities (specialized heterozooids), empty or filled with laminated calcium phosphate, is also documented in bryozoans for the first time. These cavities are interpreted as “store−rooms” in which the bryozoans accumulated nutrients. The new taxon, Podoliapora doroshevi gen. et sp. nov. is described. In additional, phosphatised fungi−like endoliths co−occur with bryozoans.
    Źródło:
    Acta Palaeontologica Polonica; 2012, 57, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Trepostome bryozoans encrusting Silurian gastropods: A taphonomic window and its implications for biodiversity
    Autorzy:
    Buttler, C.J.
    Cherns, L.
    McCobb, L.M.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/31341406.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    trepostome bryozoan
    bryozoan
    Silurian
    gastropod
    biodiversity
    Gastropoda
    Bryozoa
    symbiosis
    overgrowth
    aragonite
    taphonomy
    Shropshire county
    United Kingdom
    Źródło:
    Acta Palaeontologica Polonica; 2022, 67, 3; 569-577
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphogenetic gradients in graptolites and bryozoans
    Autorzy:
    Urbanek, A
    Powiązania:
    https://bibliotekanauki.pl/articles/23410.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Bilateria
    clone
    graptolite
    morphogenetic gradient
    colony
    bryozoan
    paleontology
    Hox gene
    Opis:
    Despite independent evolution of coloniality in hemichordates and bryozoans, their colonies show common features. In both instances colony is a genet or clonal system composed of zygotic oozooid and a number of blastozooids (= modules) integrated by physical continuity of tissues, sharing a common genotype and subject to common morphogenetic control. In some groups of graptolites and bryozoans, colonies display a regular morphological gradient. Simple graptoloid and bryozoan colonies consist of a proximal zone of astogenetic change and a distal zone of astogenetic repetition. Observed morphological gradient may be attributed to diffusion, along the colony axis, of a morphogen produced by the oozooid; in the zone of astogenetic change the morphogen is above certain threshold level and drops below it in the zone of astogenetic repetition. This model is supported by observations on regeneration of fractured graptoloid colonies. Regenerative branch never displays astogenetic change. The same rule is valid for regeneration of fractured bryozoan colonies. While the early astogeny of simple bryozoan colonies may be explained within the framework of the gradient theory, the late astogeny of more complex ones involves multiple succession of zones of change and repetition, without analogy in astogeny of graptoloids. Thus, late astogeny in bryozoan colonies may be controlled by cyclic somatic/reproductive changes, probably independent of the primary morphogen. Evolutionary changes in the graptoloid colonies involve both the spreading of the novelties over a greater number of zooids (penetrance) and an increase in the degree of phenotypic manifestation of a given character (expressivity). In the phylogeny of bilaterian colonies morphogenetic gradient probably originated as a sort of a side effect of sexual process leading to the appearance of the oozooid. The latter contaminated the neighbouring blastozooids with the products of its own morphogenesis. The resulting morphogenetic gradient could be used by selective forces to produce various effects of adaptive significance. Morphogens responsible for patterning of bilaterian colonies are probably related to the products of genes responsible for the anteroposterior control of embryos in all solitary Bilateria (Hox, zootype genes).
    Źródło:
    Acta Palaeontologica Polonica; 2004, 49, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Middle Jurassic cyclostome bryozoans from the Polish Jura
    Autorzy:
    Zaton, M
    Taylor, P.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/20460.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    Middle Jurassic
    cyclostome bryozoan
    Polish Jura
    bryozoan
    Bryozoa
    Cyclostomata
    Bajocian
    Bathonian
    Microeciella annae
    Microeciella kuklinskii
    Microeciella maleckii
    Microeciella mokrskoensis
    Microeciella magnopora
    Reptomultisparsa harae
    Hyporosopora bugajensis
    Stenolaemata
    Opis:
    New collections of bryozoans from the Middle Jurassic (Late Bajocian and Bathonian) of Poland add significantly to our knowledge of the diversity and biogeography of the Cyclostomata at a time when they were the dominant bryozoan order in the fossil record. A total of 16 species and one form−genus (“Berenicea”) are present. Most are encrusters, predominantly on hiatus concretions. A single erect species was found in deposits interpreted as regurgitates of a marine vertebrate. The following new species are described: Microeciella annae sp. nov., M. kuklinskii sp. nov., M. maleckii sp. nov., M. mokrskoensis sp. nov., M. magnopora sp. nov., Reptomultisparsa harae sp. nov., and Hyporosopora bugajensis sp. nov. The taxonomic importance of the morphology of both the gonozooids and pseudopores is underlined, especially for encrusting species of the “Berenicea” type that are otherwise difficult to distinguish from one another. The described bryozoan assemblage encrusting hiatus concretions from the Polish Middle Jurassic is the richest that has been documented globally from this kind of substrate.
    Źródło:
    Acta Palaeontologica Polonica; 2009, 54, 2; 267-288
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka jurajskich mszywiołów południowej Polski w aspekcie warunków paleooerodowiska i biogeografii
    Characteristics of Jurassic bryozoans from southern Poland in palaeoecological and biogeographical aspects
    Autorzy:
    Hara, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074500.pdf
    Data publikacji:
    2007
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    jura
    mszywioły
    różnorodność
    paleośrodowisko
    biogeografia
    Jurassic
    bryozoan assemblages
    cyclostomes
    diversity
    palaeoecology
    biogeography
    Opis:
    A few distinctive bryozoan assemblages have been recognized in the Middle and Upper Jurassic sediments of southern Poland. The biota moderately rich in bryozoan taxa are generally restricted to a few cyclostome genera and dominated respectively by tubuloporines among which the majority form a fan-shaped or discoidal [bereniciform], encrusting colonies previously called "Berenieca", a bryozoan ubiquitous in the Jurassic. The Lower and Upper Callovian epifaunal bryozoan community of the vicinity of Cracow at Zalas in the Cracow Upland is represented by well-known Jurassic Stomatopora Bronn, Hyporosopora Canu & Bassler and Microeciella Taylor & Sequeiros, genera, as well as the other undeterminated, numerous bereniciform colonies. In terms of the species richness the most diversified is the Early Oxfordian bryozoan assemblage of the Ćmielów area [NW margin of the Holy Cross Mts], associated with an open shelf biohermal sedimentation, which was replaced later [during the transversarium and bifurcatues zones] by the shallow-water, soft-bottom coral buildups, among which the bryozoans are well-represented and described from Bałtów. The presence of the ?Late Tithonian–Berriasian bryozoan fauna has been documented in the thin-sections of the Stramberk limestones of the Polish Flysch Carpathians. Palaeoecological aspects of the studied bryozoan biotas are related to the nature and relative abundance of the colonial growth forms, the substrate type and other ecological factors. The moderately rich occurrence of the bryozoans in the Late Middle and Upper Jurassic sequences of Poland shows a different pattern of distribution than the biotas of the northwestern Europe which display the greatest species diversity in the Middle Jurassic [Bathonian]. The taxonomical and biogeographical studies of the Jurassic bryozoan biotas of Poland, in spite of the great patchiness in the global distribution of the Jurassic cyclostomes, has a key significance for the evolutionary radiation pattern and may add new data, whether this fauna originated and started to radiate in the Late Middle or the Upper Jurassic, or this event was mostly connected with the facies migration from west to east.
    Źródło:
    Przegląd Geologiczny; 2007, 55, 1; 54-60
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Devonian bryozoans of the Holy Cross Mountains, Poland. Part 1. Ctenostomata
    Bryozoa dewońskie Gór Świętokrzyskich. Część 1. Ctenostomata
    Devonskie mshanki Sventokrzhiskikh Gor (Pol'sha). Chast' 1. Ctenostomata
    Autorzy:
    Kiepura, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/23469.pdf
    Data publikacji:
    1965
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    Devonian
    bryozoan
    Holy Cross Mountains
    Polska
    Ctenostomata
    age
    stratigraphic distribution
    geographic distribution
    Źródło:
    Acta Palaeontologica Polonica; 1965, 10, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Late Carboniferous bryozoans from La Hermida, Spain
    Autorzy:
    Ernst, A.
    Minwegen, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/21045.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    Spain
    La Hermida
    Carboniferous
    Late Carboniferous
    bryozoan
    Bryozoa
    Cystoporida
    Fenestellida
    Picos de Europa Formation
    systematics
    Opis:
    Fifteen bryozoan species belonging to thirteen genera have been identified from an outcrop of the Picos de Europa Formation (Moscovian, Upper Carboniferous) at La Hermida in northern Spain. Three species and one genus are new— Coscinium hermidensissp. nov., Cystodictya pustulosa sp. nov., and Cystocladia hispanica gen. et sp. nov. Rhabdomesid bryozoans are the most diverse order with seven species, followed by cystoporids (four species), fenestellids (three species) and trepostomids (one species). Bryozoans with erect branched or reticulate colonies dominate in the studied assemblage; only two species possess encrusting colonies. Together with associated crinoids, the bryozoan assemblage indicates a subtidal environment below the zone of vigorous water movement. The La Hermida bryozoan fauna confirms the Upper Carboniferous age of the Picos de Europa Formation and allows various biogeographical interpretations. All previously known species of the genus Coscinium were reported from the Lower Permian of Russia. Clausotrypa monticola is known from the Lower Permian of Russia and Arctic as well as from the Upper Carboniferous of Carnic Alps (Austria). Rhabdomeson cf. propatulissimum and Penniretepora pseudotrilineata are known from the same level of Italian Carnic Alps. Streblotrypa (Streblascopora) nikiforovae and Rhombocladia punctata are known from the Upper Carboniferous (Moscovian) of Ukraine. Fistulipora petaloida is known from Kasimovian Stage of Russian Plate. Several other species show connections with North America.
    Źródło:
    Acta Palaeontologica Polonica; 2006, 51, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Late Tortonian bryozoans from Mut Basin, Central Anatolian Plateau, southern Turkey
    Autorzy:
    Zagorsek, K.
    Gordon, D.P.
    Powiązania:
    https://bibliotekanauki.pl/articles/21300.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Late Tortonian
    Tortonian
    bryozoan
    Mut Basin
    Central Anatolian Plateau
    Turkey [geogr.]
    Bryozoa
    Cheilostomata
    Basyaylella
    Ostrovskia
    Eocene
    Miocene
    Opis:
    Sixteen bryozoan species have been identified in the Başyayla section, Mut Basin, southern Turkey. Five of these species are described here, including two new to science representing new genera: Basyaylella elsae gen. et sp. nov. and Ostrovskia triforamina gen. et sp. nov. The other three described species (Exidmonea sp., Biflustra savartii, and Margaretta sp.) show unusual features that have not been reported previously. Based on bryozoan data, the Başyayla sequence represents a tropical to subtropical, normal marine environment, with seafloor composed of fine sedimentary particles in a low−energy setting.
    Źródło:
    Acta Palaeontologica Polonica; 2013, 58, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palaeoecology of free-lying domal bryozoan colonies from the Upper Eocene of Southeastern USA
    Autorzy:
    McKinney, F K
    Taylor, P.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/22653.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    bryozoan colony
    marine rock
    Paleozoic
    Eocene
    USA
    sedimentary rock
    Upper Eocene
    morphology
    paleoecology
    Bryozoa
    Castle Hayne Formation
    paleontology
    Opis:
    Dome−shaped cheilostome bryozoan colonies, most commonly about 2 cm in diameter, are common in Upper Eocene offshore deposits of southeastern North Carolina, USA.This colony−form is anachronistic in the Eocene, being more typical of Palaeozoic bryozoans.There are three types of domes: individual colonies of Parasmittina collum (Canu and Bassler), individual colonies of Osthimosia glomerata (Gabb and Horn) and multispecies intergrowths.The bryozoans grew laterally beyond initial shell substrata to become free−lying. P. collum colonies grew by local eruptive budding, forming subcolonies that extended radially over the underlying layer of zooids.Undersides of subcolonies that extended beyond the original substratum have basal exterior walls that are more commonly fouled by encrusters than is the upper side of the colony.By contrast, lateral growth of O. glomerata colonies was limited by size of the original substratum, subcolonies were not developed, and colony growth occurred by prolific frontal budding over the entire upper surface of the colony. Undersides of colonies beyond the substratum consist of the lateral interior walls of marginal zooids and are much less commonly fouled than are undersurfaces of P. collum.The upper surfaces of multispecies domes by definition are always fouled, and their undersurfaces are also commonly fouled.
    Źródło:
    Acta Palaeontologica Polonica; 2003, 48, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lower Permian bryozoans from southern and central Spitsbergen, Svalbard
    Autorzy:
    Nakrem, H.A.
    Blazejowski, B.
    Gazdzicki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/21431.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Lower Permian
    Permian
    bryozoan
    Spitsbergen
    Svalbard
    paleontology
    Bryozoa
    Arctic
    Treskelodden Formation
    Wordiekammen Formation
    new genus
    Toulapora
    new species
    Ascopora birkenmajeri
    taxonomy
    Opis:
    Bryozoans from the Lower Permian Treskelodden and Wordiekammen formations of southern and central Spitsbergen respectively, Svalbard, have been studied. Twenty species are identified, including one new genus, Toulapora gen. nov., with Toulapora svalbardense as type species and one new species, Ascopora birkenmajeri sp. nov. The taxonomic composition is typical Lower Permian, with species in common with Timan−Pechora and the Urals (Russia) and Ellesmere Island (the Canadian Arctic). Growth habits reflect a moderately to deeper shelf environment.
    Źródło:
    Acta Palaeontologica Polonica; 2009, 54, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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