Genus Psilophyton is a group of extinct vascular plants that lived during the Devonian period. This group is known for its unique fern-like morphology and it has been referred to by several other names in the scientific literature. Some of the synonyms for Genus Psilophyton include Trimerophytopsida, Psilophytinales, Psilophytes, and Psilophyta. These alternative names are often used interchangeably with Genus Psilophyton depending on the context and the specific taxonomic classification system being used. Regardless of the name used, these plants played a key role in the evolution of the modern vascular plants we see today and continue to be the focus of scientific study and exploration.