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    Wyświetlanie 1-3 z 3
    Tytuł:
    The Barremian heteromorph ammonite Dissimilites from northern Italy: Taxonomy and evolutionary implications
    Autorzy:
    Lukeneder, A.
    Lukeneder, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/22570.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    Ammonoidea
    Acrioceratidae
    Barremian
    Cretaceous
    heteromorph ammonite
    Dissimilites
    Italy
    taxonomy
    evolution
    Alps Mountains
    Opis:
    A new acrioceratid ammonite, Dissimilites intermedius sp. nov., from the Barremian (Lower Cretaceous) of the Puez area (Dolomites, northern Italy) is described. Dissimilites intermedius sp. nov. is an intermediate form between D. dissimilis and D. trinodosum. The new species combines the ribbing style of D. dissimilis (bifurcating with intercalating single ribs) with the tuberculation style of D. trinodosum (trituberculation on entire shell). The shallow-helical spire, entirely comprising single ribs intercalated by trituberculated main ribs, is similar to the one of the assumed ancestor Acrioceras, whereas the increasing curvation of the younger forms resembles similar patterns observed in the descendant Toxoceratoides. These characters support the hypothesis of a direct evolutionary lineage from Acrioceras via Dissimilites to Toxoceratoides. D. intermedius sp. nov. ranges from the upper Lower Barremian (Moutoniceras moutonianum Zone) to the lower Upper Barremian (Toxancyloceras vandenheckii Zone). The new species allows to better understand the evolution of the genus Dissimilites. The genus appears within the Nicklesia pulchella Zone represented by D. duboise, which most likely evolved into D. dissimilis. In the Kotetishvilia compressissima Zone, two morphological forms developed: smaller forms very similar to Acrioceras and forms with very long shaft and juvenile spire like in D. intermedius sp. nov. The latter most likely gave rise to D. subalternatus and D. trinodosum in the M. moutonianum Zone, forms which were probably ancestral to the genus Toxoceratoides.
    Źródło:
    Acta Palaeontologica Polonica; 2014, 59, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Middle Triassic scleractinia-like coral Furcophyllia from the Pamir Mountains
    Autorzy:
    Melnikova, G K
    Roniewicz, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/22926.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    scleractinia-like coral
    Italy
    Alps Mountains
    Pamir Plateau
    Middle Triassic
    Tajikistan
    Furcophyllia shaitanica
    distribution
    paleontology
    Opis:
    Furcophyllia is an unusual coral with septa regularly splitting into branching sets called septal brooms. This pattern of septal apparatus is so alien to scleractinians, that, despite a trabecular microstructure of septa resembling that of the Scleractinia, the genus was originally ascribed to a rare group of corals informally referred to as sleractiniamorphs, previously known from the Ordovician and Permian. Genus Furcophyllia emerged together with corals of several groups, after the post−Permian crisis diversification of skeletonized anthozoans, some of them markedly differing in their skeletal features from typical Scleractinia. So far, the genus was represented by middle Carnian Furcophyllia septafindens from the Dolomites, in the Southern Alps. Here, we report Furcophyllia shaitanica sp. nov. from limestone boulders found in the volcano−clastic deposits of the upper Ladinian Šajtan suite of the South Eastern Pamirs. A new species of Furcophyllia signifies that the genus was a faunal element widely distributed in the Tethys.
    Źródło:
    Acta Palaeontologica Polonica; 2007, 52, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The medicinal wood-decay species Laricifomes officinalis in the Alpe Veglia–Alpe Devero Natural Park (Italian Alps): spatial analysis and growth tests of pure cultures
    Autorzy:
    Girometta, Carolina Elena
    Rovelli, Laura
    Bracco, Francesco
    Brescia, Francesca
    Baiguera, Rebecca Michela
    Chiatante, Gianpasquale
    Picco, Anna Maria
    Savino, Elena
    Powiązania:
    https://bibliotekanauki.pl/articles/11543426.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    wood decay fungi
    Laricifomes officinalis
    Larix decidua
    biodiversity conservation
    larch
    spatial analysis
    growth test
    pure culture
    natural park
    Alps Mountains
    Italy
    Opis:
    Laricifomes officinalis is a wood-decay fungus that is closely associated with old individuals of Larix decidua. In the twentieth century, L. officinalis was over-harvested because of its medicinal properties; consequently, it has become very rare or almost extinct in the Alps. In this study, we investigated the population of L. officinalis in the Alpe Veglia–Alpe Devero Natural Park (Val d’Ossola, Italy) to assess a preliminary conservation strategy. Population consistency was estimated using field mapping, and spatial analysis was performed on host trees based on topographical and environmental variables. Mycelia were isolated from harvested basidiomata, and strain identity confirmed by molecular analysis of the ITS region. All isolated strains were tested for growth in Petri dishes containing different standard media to determine which strains had the highest growth rates; the fastest growing strains may be selected for future studies and applications. Compared to the control strains from Val Malenco and Parco Nazionale del Gran Paradiso, all strains from Alpe Veglia–Alpe Devero Natural Park had lower growth rates. There was no significant difference between the growth rates of strains from Alpe Veglia and those from Alpe Devero. The results suggest that the population consistency of L. officinalis in the Alpe Veglia–Alpe Devero Natural Park is related to two main factors: habitat preservation and harvesting prohibition. These results confirm the need to protect L. officinalis both inside and outside natural reserves, despite the apparent increase in local populations.
    Źródło:
    Acta Mycologica; 2021, 56, 1; 569
    0001-625X
    2353-074X
    Pojawia się w:
    Acta Mycologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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