FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2970991046> ?p ?o ?g. }

• W2970991046 abstract "The Lower Xinminbu Formation is a lacustrine deposit which consists mainly of black papery shales intercalated with greyish green thick-layered sandstones and grey thin-layered marls. There are greyish white and reddish brown thick-layered conglo- merates in the basal part. The total thickness of this formation sums up to 1135 metres. The black shales are rich in fossil pollen and spores. One hundred and sixty-two rock samples collected from sir natural sections and two bore-holes of the above-mentioned deposit at Hongliuxia, Xinminbu, Hanxia, etc. have been treated. A lot of fossil pollen grains and spores have been found from 33 samples of them. Twenty species (or forms) of pollen and spores referred to 19 genera are described in this paper. Two species are described as new. The sporo-pollen assemblage of the Lower Xinminbu Formation is characterized by the absolute predominance of the pollen grains of gymnosperms, by the diminution of the spores of fern, and by the presence of the pollen grains of angiosperms. The pollen of gymnosperms amount to 93.3% of the total number of the microflora. The spores of fern merely amount to 5.9% of the total number. Although the pollen of angiosperms are rarely found, they play an important role in the microflora. The prominent characteristics of this microflora are the predominance of the pollen grains of Coniferae, the abundance of the spores of Schizaeaceae and the presence of the pollen grains of the angiosperms. Based on the palynological investigation, the authors consider that the Lower Xinminbu Formation should belong to Early Creta- ceous in age, because the Early Cretaceous floras both in the Eurasian Continent and in the northern American Continent possess ordinarily the above-mentioned charac- teristics. According to the flora reflected by the present sporo-pollen assemblage, it may be supposed that the climate of the Chiuchuan Basin in the Early Cretaceous period was certainly rather warm and wet. It may be referred to subtropical type similar to that of southern China at the present time. Deseription of new species Schizaeoisporites zizyphinus sp. nov. (p1. 1, fig. 11; pl.2, fig. 1) 1962 Schizaea sp. 2 Chang p. 259, p1. 2, fig. 8a-c. Holotype: No. 593 (p1. 2, fig. 1) Diagnosis: Spores zizyphus-shaped, 33.06-3.50μ×13.92-20.88μ, monolete. Exine about 1μ thick, and thicker at both ends. Surface with 14±ribs which are paralld to the long axis, straight or slightly curved, convergent or non-convergent at both ends. Ribs about 0.5μ-1.2μ thick, and about 2μ distant. Comparison: This kind of spores is similar to Cicatricososporites pseudodoro- gensis (R. Pot.) Pf. et Th. from Cretaceous of Quedlinburg (Weyland et Greifeld, 1953, p. 43, pl. 11, figs. 48-50, 53), but the latter is rounder, with non-parallel ribs, which are not convergent at both ends. Cingulatisporites ruginosus sp. nov. (pl. 2, figs. 2, 3, 3a) Holotype: No. 608 (pl. 2, fig. 3) Diagnosis: Spore rounded-triangular in polar view. Diameter 35.08-52.20μ. Triradiate suture long, stretched up to the equator. Cingulum 3 to 8μ wide, with wrinkles in layers. Exine at the angles of the spore thicker than that of the other parts. Surface with granular sculpture." @default.
• W2970991046 created "2019-09-05" @default.
• W2970991046 creator A5075711599 @default.
• W2970991046 date "1974-01-01" @default.
• W2970991046 modified "2023-09-26" @default.
• W2970991046 title "SPORO-POLLEN ASSEMBLAGE AND GEOLOGICAL AGE OF THE LOWER XINMINBU FORMATION OF CHIUCHUAN, KANSU" @default.
• W2970991046 hasPublicationYear "1974" @default.
• W2970991046 type Work @default.
• W2970991046 sameAs 2970991046 @default.
• W2970991046 citedByCount "1" @default.
• W2970991046 countsByYear W29709910462015 @default.
• W2970991046 crossrefType "journal-article" @default.
• W2970991046 hasAuthorship W2970991046A5075711599 @default.
• W2970991046 hasConcept C104317684 @default.
• W2970991046 hasConcept C109007969 @default.
• W2970991046 hasConcept C127313418 @default.
• W2970991046 hasConcept C151730666 @default.
• W2970991046 hasConcept C162501224 @default.
• W2970991046 hasConcept C174618031 @default.
• W2970991046 hasConcept C2776985847 @default.
• W2970991046 hasConcept C2777798969 @default.
• W2970991046 hasConcept C2778239642 @default.
• W2970991046 hasConcept C2780618852 @default.
• W2970991046 hasConcept C55493867 @default.
• W2970991046 hasConcept C59822182 @default.
• W2970991046 hasConcept C7407677 @default.
• W2970991046 hasConcept C86803240 @default.
• W2970991046 hasConcept C92927620 @default.
• W2970991046 hasConceptScore W2970991046C104317684 @default.
• W2970991046 hasConceptScore W2970991046C109007969 @default.
• W2970991046 hasConceptScore W2970991046C127313418 @default.
• W2970991046 hasConceptScore W2970991046C151730666 @default.
• W2970991046 hasConceptScore W2970991046C162501224 @default.
• W2970991046 hasConceptScore W2970991046C174618031 @default.
• W2970991046 hasConceptScore W2970991046C2776985847 @default.
• W2970991046 hasConceptScore W2970991046C2777798969 @default.
• W2970991046 hasConceptScore W2970991046C2778239642 @default.
• W2970991046 hasConceptScore W2970991046C2780618852 @default.
• W2970991046 hasConceptScore W2970991046C55493867 @default.
• W2970991046 hasConceptScore W2970991046C59822182 @default.
• W2970991046 hasConceptScore W2970991046C7407677 @default.
• W2970991046 hasConceptScore W2970991046C86803240 @default.
• W2970991046 hasConceptScore W2970991046C92927620 @default.
• W2970991046 hasLocation W29709910461 @default.
• W2970991046 hasOpenAccess W2970991046 @default.
• W2970991046 hasPrimaryLocation W29709910461 @default.
• W2970991046 hasRelatedWork W1541517091 @default.
• W2970991046 hasRelatedWork W1973333124 @default.
• W2970991046 hasRelatedWork W2052890224 @default.
• W2970991046 hasRelatedWork W2054877308 @default.
• W2970991046 hasRelatedWork W2070757868 @default.
• W2970991046 hasRelatedWork W2071094007 @default.
• W2970991046 hasRelatedWork W2087401215 @default.
• W2970991046 hasRelatedWork W2094043999 @default.
• W2970991046 hasRelatedWork W2096983571 @default.
• W2970991046 hasRelatedWork W2132263478 @default.
• W2970991046 hasRelatedWork W2332698209 @default.
• W2970991046 hasRelatedWork W2348289796 @default.
• W2970991046 hasRelatedWork W2351464916 @default.
• W2970991046 hasRelatedWork W2355051972 @default.
• W2970991046 hasRelatedWork W2360554906 @default.
• W2970991046 hasRelatedWork W2362123567 @default.
• W2970991046 hasRelatedWork W2387768518 @default.
• W2970991046 hasRelatedWork W2390345566 @default.
• W2970991046 hasRelatedWork W2394374125 @default.
• W2970991046 hasRelatedWork W2606413836 @default.
• W2970991046 isParatext "false" @default.
• W2970991046 isRetracted "false" @default.
• W2970991046 magId "2970991046" @default.
• W2970991046 workType "article" @default.