If humans had been present to build log structures during the Carboniferous period (they weren't), which plant types would have been suitable sources of logs?

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Quizplus · Accepted Answer

During the Carboniferous period, ferns, horsetails, and lycophytes were dominant plant types and also had the potential to grow to large sizes, making them suitable sources of logs for building structures. Whisk ferns and epiphytes are not known for growing to large sizes, while bryophytes are non-vascular plants and do not produce true logs. Charophytes are freshwater algae, and gymnosperms did not become dominant until later in the Mesozoic era.

If Humans Had Been Present to Build Log Structures During