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Wyszukujesz frazę "gigantism" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Physiological basis for somatic gigantism of snails infected with developmental stages of digenean trematodes
Autorzy:
Pokora, Z.
Powiązania:
https://bibliotekanauki.pl/articles/2151476.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
pathogenesis
infection
Opisthioglyphe ranae
somatic gigantism
Lymnaea stagnalis
growth hormone
host
parasite
host-parasite system
gigantism
reproductive system
snail
Trematoda
Źródło:
Wiadomości Parazytologiczne; 1994, 40, 3; 319-320
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The fragile legacy of Amphicoelias fragillimus (Dinosauria: Sauropoda; Morrison Formation – latest Jurassic)
Autorzy:
Woodruff, D.
Foster, J.
Powiązania:
https://bibliotekanauki.pl/articles/2061058.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
amphicoelias fragillimus
E.D. Cope
sauropod
gigantism
zauropody
gigantyzm
Opis:
In the summer of 1878, American paleontologist Edward Drinker Cope published the discovery of a sauropod dinosaur that he named Amphicoelias fragillimus. What distinguishes A. fragillimus in the annals of paleontology is the immense magnitude of the skeletal material. The single incomplete dorsal vertebra as reported by Cope was a meter and a half in height, which when fully reconstructed, would make A. fragillimus the largest vertebrate ever. After this initial description Cope never mentioned A. fragillimus in any of his scientific works for the remainder of his life. More than four decades after its description, a scientific survey at the American Museum of Natural History dedicated to the sauropods collected by Cope failed to locate the remains or whereabouts of A. fragillimus. For nearly a century the remains have yet to resurface. The enormous size of the specimen has generally been accepted despite being well beyond the size of even the largest sauropods known from verifiable fossil material (e.g. Argentinosaurus). By deciphering the ontogenetic change of Diplodocoidea vertebrae, the science of gigantism, and Cope’s own mannerisms, we conclude that the reported size of A. fragillimus is most likely an extreme over-estimation.
Źródło:
Volumina Jurassica; 2014, 12, 2; 211--220
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physiological basis for somatic gigantism of snails infected with developmental stages of digenean trematodes
Autorzy:
Pokora, Z.
Powiązania:
https://bibliotekanauki.pl/articles/841530.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
pathogenesis
infection
Opisthioglyphe ranae
somatic gigantism
Lymnaea stagnalis
growth hormone
host
parasite
host-parasite system
gigantism
reproductive system
snail
Trematoda
Źródło:
Annals of Parasitology; 1994, 40, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unique bone histology in partial large bone shafts from Upper Triassic of Aust Cliff, England: An early independent experiment in gigantism
Autorzy:
Redelstorff, R.
Sander, P.M.
Galton, P.M.
Powiązania:
https://bibliotekanauki.pl/articles/945884.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
paleontology
Reptilia
Dinosauria
bone
histology
large bone shaft
primary osteon
secondary osteon
osteon
Upper Triassic
Triassic
Aust Cliff
England
gigantism
Opis:
Two giant partial bone shafts, possible femora, from the Rhaetian Bone Bed (Upper Triassic) of Aust Cliff in SW England continue to conceal their origin. The most striking characteristic of these bones is their size, showing that dinosaur-like gigantism had already evolved by the Late Triassic. Based on their characteristic, columnar shaft morphology, it was previously suggested they came from a prosauropod or stegosaur. The bone histology of both specimens is very similar: the cortex is always rather thin, not exceeding 10 mm, and is of fibrolamellar type with longitudinal primary osteons. The primary osteons show a rather unusual feature, the development of a secondary osteon inside the primary one. The bone surface in both specimens shows open vascular canals, suggesting that the animals were still growing at the time of death, but an external fundamental system (EFS) is visible in the outermost cortex of specimen BRSMG Cb3870. The external cortex shows dense growth marks, but their annual nature is difficult to ascertain. The bones are probably dinosaurian, as indicated by the fibrolamellar bone, and possibly belong to an unknown basal sauropodomorph lineage. Alternatively, some very large pseudosuchians may have evolved fibrolamellar bone independently as an adaptation for reaching giant size.
Źródło:
Acta Palaeontologica Polonica; 2014, 59, 3; 607-615
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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