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    Wyświetlanie 1-5 z 5
    Tytuł:
    Hypsodonty in the Pleistocene ground sloth Megalonyx: Closing the 'diastema' of data
    Autorzy:
    Fields, S E
    Powiązania:
    https://bibliotekanauki.pl/articles/22782.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    sloth
    paleontology
    hypsodonty
    Pleistocene
    Megalonyx
    statistical analysis
    ground sloth
    Opis:
    Hypsodonty in Pleistocene ground sloths was reported by Bargo et al. (2006), but no data was provided for megalonychids. Herein, hypsodonty indices (HI) are presented for 22 Megalonyx specimens (mean = 1.06, SD = 0.10), and statistical analysis suggests that there were no significant changes in HI during the ontogeny or phylogeny of the genus during the Pleistocene.
    Źródło:
    Acta Palaeontologica Polonica; 2009, 54, 1; 155-158
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hypsodonty in Pleistocene ground sloths
    Autorzy:
    Bargo, M S
    De Iuliis, G.
    Vizcaino, S.F.
    Powiązania:
    https://bibliotekanauki.pl/articles/21985.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    diet
    Xenarthra
    habitat
    habit
    hypsodonty
    sloth
    Pleistocene
    Tardigrada
    paleontology
    Opis:
    Although living sloths (Xenarthra, Tardigrada) are represented by only two genera, their fossil relatives form a large and diverse group. The evolution of hypsodonty, the crown height of a tooth, has traditionally been viewed as a response to dietary shifts toward abrasive vegetation. But recent work indicates that hypsodonty is also due to the higher prevalence of grit and dust in more open environments. The teeth of sloths are both high−crowned and open−rooted, or hypselodont, but distinctions between the selective factors acting to produce differing degrees of hypsodonty have not been rigorously considered. A comparative analysis of hypsodonty was performed in eleven species of Pleistocene sloths. It suggests that differences in hypsodonty may be explained by dietary preferences, habitat and habits. Among mylodontids, morphologic and biomechanical analyses indicate that hypsodonty was unlikely to be due solely to feeding behavior, such as grazing. Some mylodontids (e.g., Scelidotherium leptocephalum, Lestodon armatus, Glossotherium robustum, Mylodon darwini) were capable diggers that likely dug for food, and ingestion of abrasive soil particles probably played a considerable role in shaping their dental characteristics. Increased hypsodonty over time in Paramylodon harlani, however, is apparently due to a change in habitat from closed to more open environments. Geographical distributions of the megatheriids Eremotherium and Megatherium indicate differing habitats as possible factors in hypsodonty differences. In summary, among Tardigrada hypsodonty is apparently affected by diet, habitat and habit. The absence of enamel must be responsible for much of the hypsodonty observed in xenarthrans, which obscures the interpretation of contribution of each of the mentioned factors.
    Źródło:
    Acta Palaeontologica Polonica; 2006, 51, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bezdroża smutku. Zdrada źródeł radości
    Astray Sadness. Betrayal of the Sources of Joy
    Autorzy:
    Kozłowski, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/1048531.pdf
    Data publikacji:
    2013-01-01
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    Stein
    Scheler
    Obłomow
    radość
    znaczenie
    zdrada
    lenistwo
    rozpacz
    joy
    meaning
    betrayal
    sloth
    despair
    Opis:
    Man is a being created for joy. Joy has many sources – small and large. Thus, he experiences great and small, long and short joys, just as great and small love, great and small hopes, great and small faith. Man, by betraying joy, enters a world of grief and despair, he lives as if he did not live, he loses a sense of meaning and value of life. Sometimes man has the courage to ask: “Why am I like this?” Oblomov in Goncharov’s novel never answered the question why I “died miserably,” while E. Stein never betrayed her little joy, little hope and little love – her only joy and truth turned out to be God, whom she sought and found.
    Źródło:
    Filozofia Chrześcijańska; 2013, 10; 113-129
    1734-4530
    2450-0399
    Pojawia się w:
    Filozofia Chrześcijańska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anisodontherium from the Late Miocene of north-western Argentina
    Autorzy:
    Brandoni, D.
    Powell, J.E.
    Gonzales, O.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/20115.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Anisodontherium
    Late Miocene
    Miocene
    paleontology
    Argentina
    Xenarthra
    Megatheriinae
    ground sloth
    diversity
    Upper Miocene
    Opis:
    The fossil record of Megatheriinae (Tardigrada, Megatheriidae) in Argentina extends from the Colloncuran (Middle Miocene of Patagonia) to the Lujanian (Late Pleistocene–Early Holocene of the Pampean region). In the Late Miocene of north−western Argentina, Megatheriinae is represented by just three species belonging to a single genus, Pyramiodontherium. Here, we describe a partial mandible and the phalanges of a third digit of the manus recovered from the Saladillo Formation (Upper Miocene) of Tucumán Province, and assign them to Anisodontherium sp. Anisodontherium is primarily characterized by mesiodistally compressed molariforms, an anterior margin of the coronoid process located posterior to m4, and a posterior margin of the mandibular symphysis located anterior to m1. While these features can also be observed in A. halmyronomum from the Arroyo Chasicó Formation (Buenos Aires Province, Pampean region), Anisodontherium sp. is smaller and more slender than the former. The shape of each molariform of Anisodontherium affects the total length of the molariform tooth row, and thus the interpretation of some characters used in cladistic and paleobiological analyses. The material described here adds to the knowledge of the mandibular and dental anatomy of early megatheriines. In addition, the occurrence of Anisodotherium in Tucumán Province provides the first record of this genus outside the Pampean region, and increases the diversity of megatheriines during the Late Miocene–Pliocene of north−western Argentina.
    Źródło:
    Acta Palaeontologica Polonica; 2012, 57, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Filozoficzna analiza doświadczenia woli i jej słabości
    A Philosophical Analysis of the Experience of Will and Its Weaknesses
    Autorzy:
    Wiśniewski, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/1048561.pdf
    Data publikacji:
    2013-01-01
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    doświadczenie woli
    wola
    słaba wola
    lenistwo (próżniactwo)
    niepowściągliwość (akrasia)
    aksjologia
    experience of will
    will
    weak will
    sloth(idleness)
    incontinence(acrasia)
    axiology
    Opis:
    The starting point of the analysis of the will and its weaknesses is the experience of the will, which the author brings first to experiencing morning awakening and undertaking daily activities. He does this in order to capture the different forms of manifestation of the will and the ways of its operation, especially weakening. Such forms are: (1) automated, habitual, enslaved will; (2) weak, sluggish, lazy will, (3) autonomous, bossy will, implementing the provisions in a certain distance from their adoption; (4) strong will, persistently focused on overcoming weaknesses, putting out a challenge to them; (5) willfulness, will undergoing desires unacceptable by reason, the extreme lack of self-control. The author notices that the first and fifth form of the participation of the will in the management of human behavior show certain resemblance because in fact they are weakening as we are giving in to habits and addictions. The second form of the will is discussed in the context of the theory of sloth. The third one is treated as the power responding to tasks and duties assigned by the mind, but also motivated by the awareness of evil hurting the subject as a result of not-undergoing orders of reason. The strong will is associated with the need to protect values as well as with the need to strive after perfection and to overcome barriers. The author is comparing the above interpretations of experiencing the will with the classical and contemporary analysis of it, with the discovery of its relationship to the intellect and with identifying the causes of the inability of implementing its precepts. It results from these analyses that the weakness of the will is an indication of the axiological disintegration of man and that overcoming the axiological chaos is the way to improve the will.
    Źródło:
    Filozofia Chrześcijańska; 2013, 10; 7-21
    1734-4530
    2450-0399
    Pojawia się w:
    Filozofia Chrześcijańska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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