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"sow bugs" (rolly polly bugs)
included in the heteromorph ammonites
had an oval outline
This educational set showing the Evolution of the Horse Hoof has 6 sets of fore and hind foot casts
Measurements: 3
Lepidodendron, Calamites, & Sigillaria Fossil Plants Stegosaurus "sow bugs" (rolly polly bugs)Lepidodendrons belong to one of the earliest major plant groups, the clubmosses. They were one of the major species living in the Carboniferous Period coal forest swamps. Because of the diamond shaped leaf scar patterns in their bark they were also known as a scale tree. Other isolated parts of the plant are given other names. Lepidostrobus (or strobili) are the spore containing cones which are found at the ends of the branches. The root sections are