Topic
Genus
About: Genus is a research topic. Over the lifetime, 68921 publications have been published within this topic receiving 590966 citations. The topic is also known as: monospecies genus & genus (zoology).
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Journal Article•
TL;DR: A new subfamily is proposed to include the genus Cythereis, characteristic of the Jurassic, Cretaceous and Tertiary to Recent deposits respectively, and the evolution of the Cytheracea hinge is discussed.
Abstract: "A new subfamily is proposed to include the genus Cythereis. It consists of three related genera, characteristic of the Jurassic, Cretaceous and Tertiary to Recent deposits respectively. Their genotypic species are described and figured. The evolution of the Cytheracea hinge is discussed, and three evolutionary trends recognized in the superfamily."
90 citations
TL;DR: Maximum parsimony analyses of 54 nuclear ribosomal DNA internal transcribed spacer (ITS) sequences were conducted to test sectional relationships in Rhizopogon and examine phylogenetic relationships with the closely related epigeous genus, Suillus.
Abstract: Rhizopogon (Basidiomycota, Boletales) is a genus of hypogeous fungi that form ectomycorrhizal associations mostly with members of the Pinaceae. This genus comprises an estimated 100+ species, with ...
90 citations
TL;DR: In this article, a review of previous literature on Classopollis Pflug, 1953, and a discussion of its nomenclature, type species, and diagnosis are discussed.
Abstract: Following a review of previous literature on Classopollis Pflug, 1953, and a discussion of its nomenclature, type species, and diagnosis, this pollen genus is here emended on the basis of numerous specimens recovered from Permian to Upper Cretaceous rocks in Canada. The type species, Classopollis classoides Pflug, is also emended, and new species are described. The stratigraphic occurrence, possible depositional environment, and possible affinities of the genus are discussed.
90 citations
Journal Article•
TL;DR: Palaeozoic stromatoporoids comprise an extinct class of non-spiculate poriferans that are represented as fossils by their basal carbonate skeleton and a revised terminology for the description of these fossils is presented.
Abstract: Palaeozoic stromatoporoids comprise an extinct class of non-spiculate poriferans that are represented as fossils by their basal carbonate skeleton. A revised terminology for the description of these fossils is presented. Seven orders (Labechiida, Clathrodictyida, Actinostromatida, Stromatoporellida, Stromatoporida, Syringostromatida, Amphiporida) are recognized. The following is recorded for each genus: (1) type species, catalogue number and depository of the primary holotype; (2) synonyms and their type species; (3) diagnosis; (4) stratigraphic range; (5) estimate of the number of species assigned to the genus; (6) stratigraphic and geographic distribution of the genus. Problems in the definition and recognition of the genus are briefly discussed in annotations. One hundred and nine genera are considered valid, or doubtfully valid. Fifty three genera are placed in synonymy. An additional 14 genera are considered to be of uncertain placement in the classification.
90 citations
Book•
01 Jan 1983
90 citations