New Fertile Species of Psilophyton from the Devonian of Maine
Kasper AE, Andrews HN, Forbes WH. 1974. New Fertile Species of Psilophyton from the Devonian of Maine. American Journal of Botany. 61(4):339-359
A review of the history of the genus Psilophyton is presented. Two new species with spo- rangia in organic connection, P. microspinosum and P. dapsile, are described. They are com- pared with Psilophyton-like plants from Maine and other previously described fertile species of this genus. Evidence from several species in the Trout Valley flora confirms the concept of this taxon as presented by Hueber and Banks. Data based on all sporangium-bearing spe- cies of Psilophyton are outlined, certain evolutionary trends within the taxon are tentatively presented, and recommendations for the treatment of the numerous fragmentary species and future new species are suggested.
- Type
- Journal Article
- Authors
- Kasper, Andrew; Andrews, Henry; Forbes, William
- Units
- KAWW
- Keywords
- paleobotany