Zobrazeno 1 - 10
of 12
pro vyhledávání: '"A. V. Gomankov"'
Autor:
Alexey F. Bunkin, Sergey M. Pershin, Diana G. Artemova, Sergey V. Gudkov, Alexey V. Gomankov, Pavel A. Sdvizhenskii, Mikhail Ya. Grishin, Vasily N. Lednev
Publikováno v:
Photonics, Vol 10, Iss 1, p 15 (2022)
Fossilized plant remains have been studied simultaneously by laser induced fluorescence and Raman spectroscopies, to reveal the prospective methods for onsite or/and laser remote sensing in future extraterrestrial missions. A multiwavelength instrume
Externí odkaz:
https://doaj.org/article/eaeb3b761c0b439bb6ec95065217af95
Autor:
A. V. Gomankov
Publikováno v:
Paleontological Journal. 56:317-326
Autor:
Alexey V. Gomankov
Publikováno v:
Palaeoworld. 29:257-269
Rich fossil plant localities in the upper Guadalupian and the lowermost Lopingian of the Russian Platform are confined to several discrete “levels” or “horizons” divided by intervals that are almost devoid of plant remains. One such “horizo
Autor:
A. V. Gomankov
Publikováno v:
Doklady Biological Sciences. 482:182-184
A detailed study of the external and internal surfaces of the cuticle of Orestovia and Schuguria using scanning electron microscopy and confocal laser microscopy has shown that the structures formerly interpreted as stomata or reproductive organs are
Autor:
A. V. Gomankov, A. V. Danilova
Publikováno v:
Paleontological Journal. 49:1365-1371
Two spore-pollen spectra from the stratotype of the Upper Kazanian Substage and the reference section of the Urzhumian Regional Stage in Cheremushka Ravine are studied. In composition both spectra closely resemble the palynological assemblage that wa
Publikováno v:
Palaeobotany. 6:5-13
Impressions of the peltaspemous female fructifications from the Novy Kuvak locality (the Kazanian of the Samara Region, Russia) are described as Peltaspermopsis nebritovii sp. nov. They represent racemose fertile shoots about 7 cm in length and 3 cm
Autor:
V. F. Tarasevich, A. V. Gomankov
Publikováno v:
Palaeobotany. 3:5-11
Dispersed bisaccate pollen grains of Scutasporites nanuki were studied by means of LM, SEM and TEM. Sacci ultrastructure of these pollen grains was rather peculiar. Sacci were like a thin fi lmy fringe attached to the central body near the equator. T
Autor:
A. V. Gomankov
Publikováno v:
Palaeobotany. 1:5-21
Impressions and compressions of conifers from the Cupriferous Sandstones Formation of the Kazanian – Tatarian age are described. The repeated association of Sashinia female cones with Quadrocladus vegetative shoots suggests the relation of these ty
Autor:
A. V. Gomankov
Publikováno v:
Paleontological Journal. 43:1245-1252
Changes in three pollen grain characters: number of sacci, infrastructure of sacci, and number and position of apertures, are considered against a phylogenetic background of cordaites and early conifers reconstructed on the basis of female fructifica
Autor:
Alexey V. Gomankov, Natalia Zavialova
Publikováno v:
Review of Palaeobotany and Palynology. 156:79-89
The morphology and ultrastructure of some dispersed pollen grains from the Permian of the Russian Platform were studied using light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Although being morphol