clubmosses

First clubmosses and horsetails appear, progymnosperms (first seed bearing plants) appear, first trees (Archaeopteris).

Table of geologic time - The Panda's Thumb 2005

The swamps were woodland ecosystems comprised of a more alien-looking mix of vegetation than that found in many science fiction stories: landscapes dominated by giant clubmosses, giant horsetails, conifers, seed ferns, and tree ferns.

Analog Science Fiction and Fact 2004

_The Ferns_ and their allies the horsetails and clubmosses are not well represented, both the soil and the air of the county being too dry for them.

Hertfordshire Herbert Winckworth Tompkins 1901

Clubmoss (Lycopodium) Strobilus - Though typically found in modern times creeping along forest floors or tropical mountains, clubmosses were once one of the most prevalent types of plants on Earth.

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Clubmoss (Lycopodium) - Historically, clubmosses have endured many climatic and environmental changes.

unknown title 2009

Clubmoss (Lycopodium) - Historically, clubmosses have endured many climatic and environmental changes.

unknown title 2009

Clubmoss (Lycopodium) Strobilus - Though typically found in modern times creeping along forest floors or tropical mountains, clubmosses were once one of the most prevalent types of plants on Earth.

unknown title 2009

Clubmoss (Lycopodium) - Historically, clubmosses have endured many climatic and environmental changes.

unknown title 2009

During the Carboniferous period, clubmosses could achieve massive heights, growing as tall as some trees and contributing greatly to the layers of organic material that would eventually develop into the coal deposits commonly used as a source of fuel today.

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Today, clubmosses are much smaller and are primarily native to mountains in the tropics, though they may also be found in northern forests.

unknown title 2009