How Tall Was Cooksonia pertoni? 6.5 cm (2.56 in) to Scale

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Cooksonia was one of the earliest known vascular land plants, living during the Silurian Period more than 400 million years ago.

Source: Natural History Museum, London — Cooksonia; University of California Museum of Paleontology — Early Land Plants

Prehistoric Life

Name	Size	Compared with Cooksonia pertoni
Elrathia kingi	2 cm (0.79 in)	0.31×
Marrella splendens	2.5 cm (0.98 in)	0.38×
Eldredgeops rana	5 cm (1.97 in)	0.77×
Pikaia gracilens	5 cm (1.97 in)	0.77×
Titanomyrma giganteum	5 cm (1.97 in)	0.77×
Tribrachidium heraldicum	5 cm (1.97 in)	0.77×
Cooksonia pertoni	6.5 cm (2.56 in)	this page
Ottoia prolifica	8 cm (3.15 in)	1.2×
Olenoides serratus	10 cm (3.94 in)	1.5×
Dickinsonia costata	14 cm (5.51 in)	2.2×

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Which is bigger: Cooksonia pertoni or Ottoia prolifica?

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