form genus


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form genus

n.
A category of biological classification based on morphology rather than phylogeny. Used especially of fossil plants and deuteromycetes.

form genus

n
(Biology) a group of species (form species) that have similar structural characteristics but are not closely related

form′ ge`nus


n.
a genus made up of species, esp. of fossil forms, that bear some morphological resemblance to each other but that may not be closely related in evolutionary origin.
[1870–75]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.form genus - (biology) an artificial taxonomic category for organisms of which the true relationships are obscureform genus - (biology) an artificial taxonomic category for organisms of which the true relationships are obscure
biological science, biology - the science that studies living organisms
genus - (biology) taxonomic group containing one or more species
2.form genus - an artificial taxonomic category established on the basis of morphological resemblance for organisms of obscure true relationships especially fossil forms
genus - (biology) taxonomic group containing one or more species
References in periodicals archive ?
Within that chapter Aristotle argues that if a definition is a principle of both the unity and the substantiality of a living substance, such a principle is to be found in the differentia expressed in a definition, taking the form genus + differentia.
The fossil record is based exclusively on pollen of the form genus Verrutricolporites van der Hammen and Wijmstra (1964).
The presence of Verrutricolporites outside of the Caribbean should be viewed with caution because determinations of fossil pollen as Verrutricolporites in Africa and as Crenea in southeastern Asia and the Pacific are complieated by the presence of a complex of very similar, non-pseudocolpate pollen types referred to Florshuetzia, a pollen form genus proposed by Morley as a probable precursor to the living Asian genera Sonneratia and Lagerstroemia among other genera (see details under Florshuetzia and Sonneratia).
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First, genera of Emporiaceae and Utrechtiaceae, including three species of the form genus Walchiostrobus, were analyzed with Cordaianthus duquesnensis Rothwell as the outgroup, using the exhaustive search option.
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Form Genus LLC, a software company dedicated to making sophisticated yet affordable and easy-to-use collaboration and computing applications for individuals and businesses, announces the launch of TakeForm(TM) Dynamic Content - Personal Edition.