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Psilophytopsida

Psilophytopsida is a now obsolete class containing one order, Psilophytales, which was previously used to classify a number of extinct plants which are now placed elsewhere. The class was established in 1917, under the name Psilophyta, with only three genera (Rhynia, Horneophyton and Psilophyton) for a group of fossil plants from the Upper Silurian and…

Description & Overview

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Description

Rhynie Chert Bed Rhynia Horneophyton Psilophyton Sporne

18 related topics

Overview

Class Order Fossil Silurian Devonian

10 related topics

Topics to explore

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Overview

Class Class (biology)
Order Order (biology)
Fossil
Silurian
Devonian
Roots Root
Leaves Leaf
Vascular system Vascular tissue
Psilotaceae Whisk fern
Psilotopsida

Description

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Map overview Semantic statistics

Psilophytopsida

Nodes31

Edges30

Triples13

Avg. degree1.94

Density0.064516

Components1

How this topic connects Entity context

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Psilophytopsida

Top relations

related to Description · 12

Psilophytopsida → Additional, All, As, Horneophyton, Kidston, Lang, Psilophyton, Rhynia, Rhynie Chert Bed, Sporne, The, Three

is a · 1

Psilophytopsida → now obsolete class containing one order

Important terminology Word statistics

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Important terminology

class plants containing rhynia horneophyton psilophyton psilotaceae three genera vascular name living whisk-ferns use order fossil roots leaves now placed

Entity relationships Subject–Predicate–Object triples

Subject	Predicate	Object	Confidence	Src
Psilophytopsida	is a	now obsolete class containing one order	0.90	text
Psilophytopsida	related to Description	The	0.60	section
Psilophytopsida	related to Description	Kidston	0.60	section
Psilophytopsida	related to Description	Lang	0.60	section
Psilophytopsida	related to Description	Rhynie Chert Bed	0.60	section
Psilophytopsida	related to Description	Three	0.60	section
Psilophytopsida	related to Description	Rhynia	0.60	section
Psilophytopsida	related to Description	Horneophyton	0.60	section
Psilophytopsida	related to Description	Psilophyton	0.60	section
Psilophytopsida	related to Description	All	0.60	section
Psilophytopsida	related to Description	Additional	0.60	section
Psilophytopsida	related to Description	As	0.60	section

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Min side: 3

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