What is another word for progymnosperm?
Pronunciation: [pɹˈɒd͡ʒɪmnˌɒspɜːm] (IPA) 
The term "progymnosperm" refers to an extinct group of plants that lived during the Devonian period. These plants are characterized by their lack of seeds, instead relying on spores for reproduction. Synonyms for "progymnosperm" include "archaeopterid," "psilophyte," and "trimerophyte." Archaeopterids were the first plants to evolve leaves and were similar in appearance to ferns. Psilophytes had simple, unbranched stems and lacked leaves, while trimerophytes had branching stems and leaves with a unique "Y" shape. These ancient plants played a crucial role in the evolution of modern vascular plants and are a fascinating piece of Earth's history.
