The Silurian plants
نویسندگان
چکیده
منابع مشابه
The State of Silurian
The geological sciences demand close international cooperation as wel as a rigorous and clearly understood language of words. Nowhere is this more keenly felt than in stratigraphy where, despite the luxury of long philosophical discussions on rocks versus time, many feel a sense of urgency about attempts to achieve a standard global chronostratigraphy. The now wel-known pioneer work of the inte...
متن کاملEVIDENCE FOR A CONDUCTING STRAND IN EARLY SILURIAN (LLANDOVERIAN) PLANTS: IMPLICAnONS FOR THE EVOLUTION OF THE LAND PLANTS
-Macerations of fragmented plant compressions of Silurian (Llandoverian) age yield sheets of organic material bearing ridges and depressions (interpreted as corresponding to surficial dimensions of cells), fragments of smooth walled tubular elements, and fragments of tubular elements with differentially thickened walls ("banded tubes"). A fragment of tissue (1.2 mOl long), consisting of smooth ...
متن کاملA Silurian 'marrellomorph' arthropod.
Xylokorys chledophilia, a new arthropod with three-dimensionally preserved soft tissues, is described from the Herefordshire (Silurian) Lagerstätte of England. The head and trunk are covered by a relatively featureless ovoid carapace, which comprises a domed central part and a flange-like border. The head bears five pairs of appendages. The first is uniramous, with dorsal and ventral projection...
متن کاملDiversity Dynamics of Silurian–Early Carboniferous Land Plants in South China
New megafossil and microfossil data indicate four episodes in the diversification of Silurian-Early Carboniferous land plants of South China, a relatively continuous regional record. Plant diversity increased throughout, but the rising curve was punctuated by three major falls. There were peaks of origination in the Ludlow-Pragian, Givetian, late Famennian and Visean and peaks of extinction in ...
متن کاملA soft-bodied lophophorate from the Silurian of England.
Soft-bodied taxa comprise an important component of the extant lophophorate fauna, but convincing fossils of soft-bodied lophophorates are extremely rare. A small fossil lophophorate, attached to a brachiopod dorsal valve, is described from the Silurian (Wenlock Series) Herefordshire Lagerstätte of England. This unmineralized organism was bilaterally symmetrical and comprised a subconical body ...
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ژورنال
عنوان ژورنال: Proceedings of the Geologists' Association
سال: 1904
ISSN: 0016-7878
DOI: 10.1016/s0016-7878(04)80051-8