Definition that contains eozoic
- paleozoic of or relating to or denoting the Paleozoic era
- trilobite an extinct arthropod that was abundant in Paleozoic times; had an exoskeleton divided into three parts
- pelycosaur large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America
- genus psilophyton type genus of the Psilophytaceae: genus of small wiry herbaceous Paleozoic plants with underground rhizomes and apical sporangia
- cordaites tall Paleozoic trees superficially resembling modern screw pines; structurally intermediate in some ways between cycads and conifers
- family psilophytaceae Paleozoic plants
- order eurypterida extinct aquatic arthropods of the Paleozoic
- psilophytaceae Paleozoic plants
- edaphosaurus heavy-bodied reptile with a dorsal sail or crest; of the late Paleozoic
- family rhyniaceae primitive plants of the Paleozoic