Prehistoric Life
Prehistoric
Secrets in Stone
The Earliest Fossils
The Silurian Reef
Trilobites
Fish
Early Reptiles and Amphibians
Sea Reptiles
Flying Reptiles
The Teeming Seas
Hunting Dinosaurs
Biggest Dinosaurs
Two-Footed Plant Eaters
Plated and Armoured Dinosaurs
Horned Dinosaurs
The Mammal Age Dawns
Grassland Mammals
The Ice Age
Back Home
Stigmaria
These are fossil fragments of underground branches, bearing scars or "stigmata" on the surface..
Related Image
 
Previous:
Back
Book:
Prehistoric Life
Section:
Prehistoric
Chapter:
The Coal Forests