Use when discussing these important Paleozioc index fossils, or the animals that formed them.
Graptolites are important index fossils of the Paleozoic Era, found from the Cambrian through the Lower Carboniferous. Originally described by Linnaeus as a category of forms he considered pseudo-fossils, they were later associated with certain colonial pterobranch animals. They are believed extinct, although some believe that some extant pterobranch groups such as Rhabdopleura are actually graptolites. Use this tag for questions
- about graptolite fossils and their use in Paleozioc dating
- about the lifecycles, anatomy, ecology, and evolutionary history of the animals that formed these fossils
- about graptolites' possible survival to the present time.