Autor: Butler, D. R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Site locations and characteristics of miniature patterned ground, eastern Glacier National Park, Montana, U.S.A.
Autorzy:: Butler, D. R.
Malanson, G. P.
Powiązania:: https://bibliotekanauki.pl/articles/294314.pdf
Data publikacji:: 1999
Wydawca:: Stowarzyszenie Geomorfologów Polskich
Tematy:: patterned ground
solifluction
periglacial
Rocky Mountains
Montana
scale dependence
Opis:: We examined a total of 68 sites with miniature polygonal patterned ground above treeline, along and east of the Continental Divide in Glacier National Park, Montana, USA. Patterned ground develops at three geographic site-types: convex uplands; concave mountain passes and cols; and valleyside slopes. Data were collected at each site to characterize the patterned ground morphometry. Morphometry was similar regardless of site-type, and occurrence was dependent on the presence of fine-grained material on older solifluction terraces or sorted nets.
Źródło:: Landform Analysis; 1999, 2; 45-49
1429-799X
Pojawia się w:: Landform Analysis
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The environmental impact of crayfish biopedoturbation on a floodplain : Roanoke River, North Carolina Coastal Plain, U.S.A
Autorzy:: Butler, D. R.
Powiązania:: https://bibliotekanauki.pl/articles/294388.pdf
Data publikacji:: 2002
Wydawca:: Stowarzyszenie Geomorfologów Polskich
Tematy:: zoogeomorphology
biopedoturbation
crayfish
Roanoke River
North Carolina
Opis:: A terrestrial crustacean, the crayfish, creates widespread fine-scale landforms (mounds or "chimneys") on the floodplain of the Roanoke River in eastern North Carolina, U.S.A. These mounds are typically 12 cm high and 8 cm in diameter, and are composed of extremely high concentrations of clay. Non-crayfish-affected soils on the floodplain, regardless of coarser-scale landform type, are dominated by sand, illustrating that crayfish are a primary mechanism for concentrating clay and creating spatial heterogeneity on the floodplain.
Źródło:: Landform Analysis; 2002, 3; 35-40
1429-799X
Pojawia się w:: Landform Analysis
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The last erythrosuchid - a revision of Chalishevia cothurnata from the late Middle Triassic of European Russia
Autorzy:: Butler, R.J.
Sennikov, A.G.
Ezcurra, M.D.
Gower, D.J.
Powiązania:: https://bibliotekanauki.pl/articles/19956.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:: Erythrosuchidae is a clade of early archosauriform reptiles that were large-bodied, hypercarnivorous, possibly apex predators in late Early and Middle Triassic ecosystems following the Permo-Triassic mass extinction. Chalishevia cothurnata from the late Middle Triassic (Ladinian) of Russia, is the stratigraphically youngest known erythrosuchid species, but the holotype and referred material of this taxon has received little study. Here, we provide the first detailed anatomical description of C. cothurnata, including comparisons to other erythrosuchids. Although known from relatively fragmentary material, the anatomy of C. cothurnata is distinctive, including an autapomorphic strongly slanted ventral border of the antorbital fossa. The presence of a large accessory opening (the “accessory antorbital fenestra”) in the skull between the premaxilla, nasal and maxilla, together with the inferred presence of a narrow postnarial process of the premaxilla that articulated with a slot on the nasal, provides strong evidence for a sister taxon relationship between C. cothurnata and the erythrosuchid Shansisuchus shansisuchus from the early Middle Triassic (Anisian) of China. The inferred basal skull length of C. cothurnata was approximately 80 cm, making it one of the largest erythrosuchids known.
Źródło:: Acta Palaeontologica Polonica; 2019, 64, 4
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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