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posed of various types of (resting)
spores, as well as epibiotic and endobiotic
(putative) zoosporangia that occur
in/on solitary unicells, peronosporomycetous
oogonia, (degrading) vascular
plant tissues (i.e. xylem, periderm, cortical
parenchyma), and various plant and
fungal spores. Vegetative parts such as
tenuous filaments or rhizomycelia in organic
connection are rarely preserved.
Host responses possibly linked to chytrid
infection occur in the form of two
different types of callosities, some with
a distinct penetration canal, in lycophyte
xylem and periderm, as well as in fungal
spores. We suggest that the majority of
chytrids and chytrid-like remains preserved
in the Visean cherts belonged to a
community of saprotrophic microorganisms
that functioned in the decomposition
of organic matter. Only a few forms
appear to have been parasites. The
Visean cherts from France provide a rare
opportunity to examine the diversity of
Chytridiomycota in a Carboniferous
ecosystem.
2010010113
前 寒 武 纪 微 体 化 石 Arctacellularia 和
Glomovertella 特 征 = On the nature of
the Precambrian microfossils Arctacellularia
and Glomovertella. ( 英 文 ).
Hermann T N; Podkovyrov V N. Paleontological
Journal, 2008, 42(6): 655-
664 3 图 版 .
Possible phylogenetic relationships
between the organic-walled microfossils
of the form genus Arctacellularia
Hermann, 1976, representing chainlike
aggregates of cells, and the filaments of
the genus Glomovertella Reitlinger,
1948, which comprises variously coiled
filaments, are discussed. The possible
relationship of these microfossils with
different morphologies to lower ascomycetes
is discussed. The chains of Arctacellularia
are interpreted as exogenously
produced spores, and the filaments
that are associated with them are
treated as vegetative hyphae that have a
characteristic coiling during their transition
phase, perhaps before the formation
of sporophores. An emended diagnosis
of the genus Arctacellularia and
emended descriptions of the species A.
ellipsoidea Hermann, 1976, A. kelleri
Hermann et Jankauskas, 1989 are provided;
and a new species, Glomovertella
miroedikhia sp. nov., is described.
蕨 类 植 物 ( 广 义 )
2010010114
沃 罗 涅 什 地 区 ( 西 俄 ) 泥 盆 纪 的 新 属
种 Istchenkophyton filiciforme, 具 厚
角 质 层 的 小 型 维 管 植 物 = Istchenkophyton
filiciforme gen. et sp. nov., a
new small vascular plant with thick cuticle
from the Devonian of Voronezh Region
(European Russia). ( 英 文 ).
Broushkin A V; Gordenko N V. Paleontological
Journal, 2009, 43(10): 1202-
1216 9 图 版 .
Remains of a new small vascular
plant, Istchenkophyton filiciforme gen. et
sp. nov., are described from the Upper
Givetian strata of Pavlovsk vicinity (Voronezh
Region). The plant is characterized
by a very thick cuticle (up to 300
μm), complex branching pattern, similar
to that of a frond rachis, anomocytic
stomata, and a well-developed vascular
bundle with a central elongated in transversal
section protoxylem strand and
massive metaxylem composed chiefly of
scalariform bordered-pitted tracheids. A
reconstruction of the new plant is proposed;
its ecology and systematic position
are considered. In the light of new
data relationships of problematic Devonian
plants with thick cuticle are discussed.
2010010115
中 泥 盆 世 石 松 类 植 物
Protolepidodendron scharianum 的 研
究 历 史 及 其 正 模 标 本 的 描 述 = Middle
Devonian lycophyte Protolepidodendron
scharianum: History of study and description
of the holotype. ( 英 文 ). Jurina
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