The Family Lepidodendraceae is a group of extinct, primitive tree species that thrived during the Carboniferous period, also known as the "Age of Coal". These prehistoric trees were characterized by their tall, straight trunks and fern-like foliage, and were instrumental in forming the coal deposits we use today. Synonyms for the Family Lepidodendraceae include the "scale tree family" and the "club moss family". These names highlight the unique appearance and defining features of these ancient trees. Though they are no longer extant, the legacy of the Lepidodendraceae lives on through the coal deposits they helped create.